Re: [RE-wrenches] Removing paint from solar modules

[Chris Mason via RE-wrenches]

Just a razor blade. I doubt you can take if off chemically.

On Fri, Apr 15, 2022 at 9:01 AM Mac Lewis via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi Wrenches,
>
> We had some painters try to paint a house in 35 mph winds and (of course)
> the overspray got onto some recently installed solar modules.  They were
> using a latex water-based exterior paint.  Are there any mild solvents you
> might recommend to help clean this up?  Or just elbow grease?
>
> Thanks!
> --
>
>
>
> Mac Lewis
>
> *"Yo solo sé que no sé nada." -Sócrates*
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] 24/7 Water pumping

[Chris Mason]

The Sunpumps controller only requires solar panels as DC input. You do not
need a charge controller.

On Tue, Mar 15, 2022 at 12:49 PM William Miller 
wrote:

> Windy:
>
> Thanks for the info. I have been in contact with Sun Pumps. They can sell
> me a pump that will work off of a high voltage battery bank (greater than
> 90 VDC and likely much higher). However they cannot provide or recommend a
> charge controller to output PV charge at the higher voltage. Do you or any
> wrench know of a high voltage charge controller on the market?
>
> Thanks in advance.
>
> William
>
> On Thu, Mar 10, 2022 at 8:29 AM Windy Dankoff 
> wrote:
>
>> Dear William,
>>
>> SunPumps has a new helical rotor submersible series (positive
>> displacement) that is typically much more efficient for high lift compared
>> to a normal multi-stage centrifugal sub (you'll have to compare the specs).
>>
>> https://www.sunpumps.com/Products/HR%2010-525%20AC%20DC
>>
>> I have no inside-knowledge of this item, but it's based on good
>> technology similar to Lorentz and Grundfos and SunPumps is on the same
>> level as a world leader.
>>
>> With any DC pump, you need to be sure it's compatible with battery power
>> if you need 24/7.
>>
>> I hope you'll let us know how it goes.
>>
>> Windy
>>
>>
>> *From: *William Miller 
>> *Subject: **[RE-wrenches] 24/7 wATER pUMPING*
>> *Date: *March 8, 2022 at 7:53:37 AM MST
>> *To: *RE-wrenches 
>> *Reply-To: *
>>
>>
>> Friends:
>>
>>
>> I have a client that wishes to pump water at about 10 GPM from spring
>> through autumn equinoxes.   Lift is 300 feet.  (This is the project that
>> will not siphon beyond 33 feet.)
>>
>>
>> I can design a solar/battery/inverter system for this purpose but I am
>> wondering if there is a direct DC option.  I am going to look at the
>> Grundfos SQ-Flex tables to see if this is an option.
>>
>>
>> Does anyone out there have any advice on best approach to this project?
>>
>>
>> Thanks in advance,
>>
>>
>> William Miller
>>
>>
>> Miller Solar
>> 17395 Oak Road, Atascadero, CA 93422
>> 805-438-5600
>> www.millersolar.com
>> CA Lic. 773985
>>
>>
>>
>>
>>
>>
>>
>> *From: *Jerry Shafer 
>> *Subject: **Re: [RE-wrenches] 24/7 wATER pUMPING*
>> *Date: *March 8, 2022 at 8:58:16 AM MST
>> *To: *William Miller , RE-wrenches <
>> re-wrenches@lists.re-wrenches.org>
>>
>>
>> William
>> Here is the deal it will be simplest to go AC for the pump because of the
>> requirement of high voltage DC yes there are small er output DC pumps but
>> that is not what you need, first find a AC pump that can do the required 10
>> GPM at 300 feet of head then design a inverter to fit that bill PV to
>> recharge that usage and then some. look at the first and last day of the
>> desired water demand and go the shorted day as a production base line. When
>> looking at pumps grundfus is very efficient in DC and wild AC but at a cost
>> so look at options output vs input. I have done this with Grundus and DC
>> direct to a 50K storage tank at the very top of the property so it can be
>> done with DC so AC just requires additional nighttime.
>> Here might be an option large enough storage tank to fill every night and
>> a pump big enough to drain it every day, this can be done DC direct,
>> cheaper and less moving parts and the pump can run on a genny if you have
>> bad weather for days, This is how the ones I have done work.
>> Jerry
>>
>>
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>> --
>
> William Miller
> Miller Solar.com
> 895-438-5600
> www.millersolar.com
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Re: [RE-wrenches] Mate3s hangups

[Chris Mason]

We have had two units in succession fail, network ports stopped working.
Other than networking they work perfectly.

On Wed, Feb 16, 2022 at 4:32 PM Kirk Herander  wrote:

> Yep, "gateway offline" id the OpticsRE message. I will explore the
> auto-reboot, is it programmable through OptisRE?
>
> I've never gotten a Mate3s to communicate over satellite internet. Just
> didn't work, even though the household LAN was fine over it. The customer
> had to invest in a Verizon cell modem( ie. jetpack) and I used the SIM card
> in a 3rd party modem, that works fine.
>
> On Wed, Feb 16, 2022 at 3:07 PM Dan Fink  wrote:
>
>> Kirk -- Is it connected to OpticsRE, and do you get "Gateway Offline"
>> status when this happens? I've had weird offline intervals in the past, and
>> many Mate 3s firmware updates ago I set them to auto reboot every 24 hours
>> which fixed weird offline intervals. My experience with Mate 3s / OpticsRE
>> over HughesNet has been 50/50; works for some sites, not for others. The
>> auto reboot has fixed all my similar issues so far as Chris mentions, but I
>> have not had any problems with it not finding DHCP and getting back online
>> by itself after an internet outage. Never seen that before here.
>> Dan Fink
>> Owner, Buckville Energy Consulting LLC
>> IREC Certified Instructor for PV and Small Wind Installation
>> NABCEP Certified PV System Inspector
>> NABCEP PV Associate
>> d anbo...@gmail.com
>> 970-672-4342
>>
>>
>>
>>
>> On Wed, Feb 16, 2022 at 12:24 PM Kirk Herander 
>> wrote:
>>
>>> Hello all,
>>>
>>> I've had several Mates go offline (refuse to send data) to the host
>>> lately. Totally different sites. The front panel looks perfectly normal.
>>> But they can only be restored by unplugging the Lan and Hub cables, then a
>>> normal reboot will occur and OpticsRE  is restored. Ideas???
>>>
>>> --
>>>
>>> *Kirk Herander / **kirkh@vermont.solar *
>>>
>>> *Owner|Principal, VT Solar, LLC*
>>>
>>> *Celebrating our 31st Anniversary 1991-2022!!*
>>>
>>> *www.vermont.solar*
>>> <https://nam02.safelinks.protection.outlook.com/?url=www.vermontsolarnow.com=02%7C01%7C%7C9f0330d75a244870112408d685311841%7C84df9e7fe9f640afb435%7C1%7C0%7C636842843233477645=0NjyuKeQbEK6245SNnk8X4XnP9Q%2B%2BqtvcALkdDghvk4%3D=0>
>>>
>>> dba Vermont Solar Engineering
>>>
>>> 802.863.1202
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> --
>
> *Kirk Herander / **kirkh@vermont.solar *
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 31st Anniversary 1991-2022!!*
>
> *www.vermont.solar*
> <https://nam02.safelinks.protection.outlook.com/?url=www.vermontsolarnow.com=02%7C01%7C%7C9f0330d75a244870112408d685311841%7C84df9e7fe9f640afb435%7C1%7C0%7C636842843233477645=0NjyuKeQbEK6245SNnk8X4XnP9Q%2B%2BqtvcALkdDghvk4%3D=0>
>
> dba Vermont Solar Engineering
>
> 802.86

Re: [RE-wrenches] ] Tesla Anywhere

[Chris Mason]

This is vapourware and the customers fall for it everytime. I had someone
here in Anguilla insist they wanted Tesla solar tiles or nothing. they
would not believe me it was a terrible idea, especially in a hurricane
area, and tesla was not going to sell it to her. Ended up doing nothing.
Tesla kills solar deals.

On Tue, Feb 15, 2022 at 4:52 PM Kirk Herander  wrote:

> That's the problem. They don't want to talk to you, unless maybe you're
> interested in buying solar shingles and storage as a package deal. I've
> applied for certification several times over the last 2 yrs, and no
> response. And present dealers tell me their dealer network is falling
> apart. No support whatsoever.
>
> Old Elon should concentrate more on his terrestrial interests instead of
> spaceman ambitions.
>
> On Tue, Feb 15, 2022 at 3:44 PM Dana Orzel  wrote:
>
>> Very good! I was just about to ask the same question. I have 1 new
>> construction request for a “Tesla” system. Between Snow country [Where I
>> think the roof tile is not appropriate & from what I hear not available as
>> it is still in prototype testing & costing twice what Tesla wants to sell
>> it for] & the fact that I cannot get anyone at Tesla to call me back.
>>
>>
>>
>> I am wondering what other folks experience has been.
>>
>>
>>
>>
>>
>>
>>
>> Dana Orzel  Great Solar Works, Inc.
>>
>> *C - 208.721.7003   d...@solarwork.com
>> *
>>
>> Idaho Contractor - # 028765 Idaho PV # 028374
>>
>> NABCEP # 051112-136   www.greatsolarworks.com
>>
>> *"Responsible Technologies for Responsible People since 1988"  *
>>
>> *P* Please consider the environment before printing this email.
>>
>>
>>
>>
>>
>> *From:* RE-wrenches  *On
>> Behalf Of *Nicholas Welch
>> *Sent:* Tuesday, February 15, 2022 1:01 PM
>> *To:* RE-wrenches@lists.re-wrenches.org
>> *Subject:* [RE-wrenches] Tesla Anywhere
>>
>>
>>
>> Hello Wrenches,
>>
>>
>>
>> Has anyone here taken the plunge in partnering with Tesla for their
>> "Tesla Anywhere" program? If so, I'd love to chat off forum. Please let me
>> know and I will send my contact info.
>>
>>
>>
>> Thanks in advance,
>>
>>
>>
>> Nick Welch
>>
>> NC Electrical License #34779
>> ___
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>
> --
>
> *Kirk Herander / **kirkh@vermont.solar *
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 31st Anniversary 1991-2022!!*
>
> *www.vermont.solar*
> <https://nam02.safelinks.protection.outlook.com/?url=www.vermontsolarnow.com=02%7C01%7C%7C9f0330d75a244870112408d685311841%7C84df9e7fe9f640afb435%7C1%7C0%7C636842843233477645=0NjyuKeQbEK6245SNnk8X4XnP9Q%2B%2BqtvcALkdDghvk4%3D=0>
>
> dba Vermont Solar Engineering
>
> 802.863.1202
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] Transmitting 15kW 3600ft Off Grid.

[Chris Mason]

antrex "Certified" Dealer / Installer"*
>
>
>
>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] Transmitting 15kW 3600ft Off Grid.

[Chris Mason]

I would use a 6,600V single phase outdoor pad mounted transformer pair and
deep bury a single #2 direct burial cable. Easy and quick.

On Mon, Jan 10, 2022 at 7:34 AM Foxfire Energy 
wrote:

> Hi Guys, Got a good one for you.. We were tasked to refurbish a Stand
> Alone (aka Off Grid) power system on a 100 acre private resort island off
> the New England coast a few years back.. The system has a 12kW(AC)/ 48VDC
> power center (@120/240VAC) with a 10kW Bergey wind turbine, 3kW of Solar
> and a 12kW Diesel Generator.. It currently powers two main lodges and 10
> private cabins.. The system was never installed properly and had
> significant damage when we got there (no system ground, evidence of several
> lightening strikes, open/corroded connections, and poor workmanship in
> general)
> The new owners want to build a third lodge at the other end of the
> island.. Some 3600ft away, and want to feed full power from the existing
> system to the new lodge.. Thing is, the new owner is pretty brainy (keeps
> me on my toes).. My first thought was to bump the 120/240VAC up to 480VAC
> and send it on like 4/0AL and back down to 120/240VAC at the new lodge
> (we've done it before).. The new owner wants to launder the AC to DC and
> back for transmission.. Says DC for transmission is the new Cats Pajamas
> because of the efficiency.. News to me.. Anyone have experience with DC for
> transmission? Again.. I'm shooting for 15kW (including 25% for continuous
> duty), 3600ft, 600V wire (but could go with a different wire) and a line
> loss under 5%. TIA db
>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] Max charge for lithium batteries

[Chris Mason]

You can absolutely charge to 100% and you can discharge to 100%. Lithium is
in another world compared to Lead Acid. You don't see LA cars driving
around.
But you shouldn't leave Lithium at 100% for months on end, it can be
detrimental. That's not likely to be an issue for solar systems.
Your absorption voltages are only for non-485 inverters that don't know
about Lithium. The question was whether you can charge to 100% and yes, you
absolutely can, because 100% is no 100%, there is a recommended voltage and
a do-not-exceed voltage.


On Mon, Nov 1, 2021 at 2:43 PM frenergy  wrote:

> Hey Folks,
>
> From the SimpliPHI/Outback integration guide download, using
> an Outback (I assume any brand of) charge controller (EG: FM80, FM60,
> FM100), their chart shows absorbtion voltage at 56.4 for 51.2 nom PHI
> batteries with time set at 6 minutes, page 18.  If using the inverter, they
> show 54.0 volts for 2 hrs, page 13.
>
> I found this at their website:
> https://simpliphipower.com/product-documentation/
>
> then scroll down.  There may be a longevity advantage to not fully
> charging L-ion batteries but if you're only charging to 80% and not really
> supposed to go below 20% SOC then L-ion batteries aren't looking much
> better than FLA batteries in terms of capacity.
>
> Bill
>
> Feather River Solar Electric
> On 11/1/2021 10:03 AM, Chris Mason wrote:
>
> There's no benefit to charging to 100%. If the charging parameters are set
> up correctly, you'll never really get to 100%.
> If you look at most prismatic cells, the absolutely maximum voltage is
> 3.65V. My systems are set up to charge to 3.4V or 54.4V. I take that as
> 100%.
>
>
>
> On Sun, Oct 31, 2021 at 12:19 PM 
> wrote:
>
>>
>> I have a client that insists it is better not to charge lithium
>> batteries to 100%. Is there any truth to this?
>>
>> Thanks,
>>
>> Drake
>>
>>
>> Drake Chamberlin
>> Athens Electric LLC
>> Ohio Electrical Contractor’s License 44810
>> CO Master Electrician’s License 4526
>> NABCEP Certified PV Installation Professional
>>
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Re: [RE-wrenches] Max charge for lithium batteries

[Chris Mason]

There's no benefit to charging to 100%. If the charging parameters are set
up correctly, you'll never really get to 100%.
If you look at most prismatic cells, the absolutely maximum voltage is
3.65V. My systems are set up to charge to 3.4V or 54.4V. I take that as
100%.



On Sun, Oct 31, 2021 at 12:19 PM 
wrote:

>
> I have a client that insists it is better not to charge lithium
> batteries to 100%. Is there any truth to this?
>
> Thanks,
>
> Drake
>
>
> Drake Chamberlin
> Athens Electric LLC
> Ohio Electrical Contractor’s License 44810
> CO Master Electrician’s License 4526
> NABCEP Certified PV Installation Professional
>
> --
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] max voltage for simpliphi battery

[Chris Mason]

So a nominal 51.2V system should be charged to 54V

On Sat, Oct 30, 2021 at 5:40 PM Chris Mason 
wrote:

> Simplifi use standard LiFeP04 3.2V cells, top voltage would be 3.65.
> I would set my max charge voltage to 3.4v
>
>
> On Sat, Oct 30, 2021 at 5:05 PM jay  wrote:
>
>> Hi All,
>>
>> Does anyone know what the BMS  shut off  high voltage is for a simpliphi
>> battery is?
>>
>> I can’t find it in the spec sheet
>>
>> Thanks
>> jay
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> --
> Chris Mason
> Solar systems designer
> Generac Generators Industrial technician
>
> Comet Systems Ltd DBA Comet Solar
> Anguilla Cell  264.235.5670
> WhatsApp 264.235.5670
> Skype: netconcepts
> www.cometsolar.com <http://www.cometenergysystems.com/>
>


-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] max voltage for simpliphi battery

[Chris Mason]

Simplifi use standard LiFeP04 3.2V cells, top voltage would be 3.65.
I would set my max charge voltage to 3.4v


On Sat, Oct 30, 2021 at 5:05 PM jay  wrote:

> Hi All,
>
> Does anyone know what the BMS  shut off  high voltage is for a simpliphi
> battery is?
>
> I can’t find it in the spec sheet
>
> Thanks
> jay
> ___
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
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[RE-wrenches] 240V wind turbine

[Chris Mason]

Does anyone still make a 240V single phase small residential wind turbine?
I have a client with a Sonos battery system that wants to add some wind. We
can't charge the battery at 48V but the Sonos is AC Coupled so the turbine
should be able to feed his residential electrical system and the Sonos
absorb the excess.


-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] Sol-Ark 12k w/ Generac Transfer Switch

[Chris Mason]

I think you are confusing the transfer switch that can me controlled by the
PWRcell inverter.
All Guardians can be started by two wire control. It does not violate your
warranty. When you start using relays in the transfer switch, that
invalidates your warranty.

On Fri, Jun 18, 2021 at 10:16 AM 
wrote:

> I've controlled Generac Guardians, using the transfer switch and adding
> relays so the inverter decides when it should start. These were out of
> warranty units. Checking with Generac about a proposed new generator, I was
> told that it would void the warranty to do that. I was told that a new
> Generac is supposed to come our around the end of the year that can be
> controlled by an inverter.
>
> Drake
>
>
>
> Drake Chamberlin
>
> Athens Electric LLC
>
> Ohio Electrical Contractor’s License 44810
>
> CO Master Electrician’s License 4526
>
> NABCEP Certified PV Installation Professional
>
> athens-electric.com
>
>
> ---
>
>
>
> On 2021-06-17 09:41, r...@solshineenergy.com wrote:
>
> Wrenches,
>
> I'm looking to tie in a Generac Powerpact 7.5kW generator with transfer
> switch to a Sol-Ark 12kW. The Sol-Ark has a two wire start (NO or NC)
> capability, however, the Generac transfer switch operates on loss of 240V.
> Is my only option to use a relay driven by the two wire start to drop 240V
> to the transfer switch?
>
> Thank you,
>
> rick brown
> SolShine Energy Alternatives, LLC
> Electrical & Solar Contracting Services
> www.SolShineEnergy.com
> Check, Virginia 24072
> Office: 540.235.3095
> Mobile: 540.808.9502
>
> VA Class A Contractor Lic# 2705147660
> VA Master Electrician Lic# 2710062762
> VA Alternative Energy Systems Installer
> NABCEP Certified PV Installation Professional 110112-21
>
>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
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Re: [RE-wrenches] Sol-Ark 12k w/ Generac Transfer Switch

[Chris Mason]

And just like that, I found the instructions for two wire start of a
Powerpact generator.
https://rexel-cdn.com/Products/Generac/7109.pdf?i=3DE90BD8-3F92-4C63-A833-FEDC1C27B8F7




On Thu, Jun 17, 2021 at 9:41 AM r...@solshineenergy.com <
r...@solshineenergy.com> wrote:

> Wrenches,
>
> I’m looking to tie in a Generac Powerpact 7.5kW generator with transfer
> switch to a Sol-Ark 12kW. The Sol-Ark has a two wire start (NO or NC)
> capability, however, the Generac transfer switch operates on loss of 240V.
> Is my only option to use a relay driven by the two wire start to drop 240V
> to the transfer switch?
>
> Thank you,
>
> rick brown
> SolShine Energy Alternatives, LLC
> Electrical & Solar Contracting Services
> www.SolShineEnergy.com
> Check, Virginia 24072
> Office: 540.235.3095
> Mobile: 540.808.9502
>
> VA Class A Contractor Lic# 2705147660
> VA Master Electrician Lic# 2710062762
> VA Alternative Energy Systems Installer
> NABCEP Certified PV Installation Professional 110112-21
>
>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] Sol-Ark 12k w/ Generac Transfer Switch

[Chris Mason]

As a Generac dealer, I would say the right answer is "No".
As in, don't use a Powerpact generator as a two wire start generator. The
Powerpact are a glorified portable in a box.
The Powerpact has to have constant power to maintain the battery and
electronics. The generator powers the load center transfer mechanism.
You can use a Guardian as a two wire start unit if you provide a 120V T1
for battery charging, but the Evolution controller has to be configured as
two wire start.
I do not believe the Powerpact has that feature as it does not have a
configurable controller.
Also, it invalidates the warranty.
And, if you rig a relay and someone gets electrocuted, it's on you.
Sometimes the best answer is no, you need to trade up to a better generator.

On Thu, Jun 17, 2021 at 9:41 AM r...@solshineenergy.com <
r...@solshineenergy.com> wrote:

> Wrenches,
>
> I’m looking to tie in a Generac Powerpact 7.5kW generator with transfer
> switch to a Sol-Ark 12kW. The Sol-Ark has a two wire start (NO or NC)
> capability, however, the Generac transfer switch operates on loss of 240V.
> Is my only option to use a relay driven by the two wire start to drop 240V
> to the transfer switch?
>
> Thank you,
>
> rick brown
> SolShine Energy Alternatives, LLC
> Electrical & Solar Contracting Services
> www.SolShineEnergy.com
> Check, Virginia 24072
> Office: 540.235.3095
> Mobile: 540.808.9502
>
> VA Class A Contractor Lic# 2705147660
> VA Master Electrician Lic# 2710062762
> VA Alternative Energy Systems Installer
> NABCEP Certified PV Installation Professional 110112-21
>
>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] Breakers weakening?

[Chris Mason]

I'm presuming this is a breaker in a load center.
Breakers fail, that's not unusual. Breakers for inverters undergo constant
load so they will run hot all the time and will be prone to failure.
It may have always been out of tolerance, most applications never push the
breaker close to the limit.
I would just swap it and move on.

On Sat, May 8, 2021 at 2:13 PM Kirk Herander, VSE 
wrote:

> I have a system where the SE1 inverter fried internally. The 60A AC
> output breaker tripped several times, as a result of the homeowner
> resetting over and over until he called me.
> I replaced the inverter under warranty and all is fine, except on sunny
> days the breaker will trip at about 40A, close to the max output of the
> inverter. Reset it outside of peak inverter output and its good. I assume
> the breaker has weakened from stress of some sort, so I replaced it and
> time will tell.
> Anyone ever seen a breaker have it's trip point reduced like this?
>
> *Kirk Herander / **kirkh@vermont.solar *
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 30th Anniversary 1991-2021!!*
>
> *www.vermont.solar*
> <https://nam02.safelinks.protection.outlook.com/?url=www.vermontsolarnow.com=02%7C01%7C%7C9f0330d75a244870112408d685311841%7C84df9e7fe9f640afb435%7C1%7C0%7C636842843233477645=0NjyuKeQbEK6245SNnk8X4XnP9Q%2B%2BqtvcALkdDghvk4%3D=0>
>
> dba Vermont Solar Engineering
>
> 802.863.1202
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] Monitoring large PV systems

[Chris Mason]

I've used Solar-Log for larger systems, they work with a number of inverter
systems.

On Sat, Apr 10, 2021 at 4:38 PM William Miller 
wrote:

> Friends:
>
>
>
> We are starting to work on larger grid-tied systems (500kW) and I am
> trying to school myself on some of the aspects.  Monitoring is the subject
> at hand.
>
>
>
> One such system uses AlsoEnergy hardware on the PowerTrack online
> platform.  There is also a VistaWatt service that is involved that looks
> like it is simply an analytics service.
>
>
>
> Have I correctly categorized the above entities?  Does anyone have
> experience with any of the above that might offer some insight as to the
> pros and cons of these services?  Anyone have any documentation on the
> hardware?
>
>
>
> Thanks in advance!
>
>
>
> William Miller
>
>
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
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Chris Mason
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Comet Systems Ltd DBA Comet Solar
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Re: [RE-wrenches] Pool heating solutions

[Chris Mason]

I install pool heating. We use 12" wide EPDM rubber collectors.
We usually quote for a collector that is 2/3 of the pool surface area.
I can give you a contact that will supply everything as a package and
advise on engineering.

On Tue, Apr 6, 2021 at 9:22 PM  wrote:

> Hi folks:
>
>
>
> I have an old customer who’s moved to Palm Springs, CA; and she’s looking
> for some pool heating ideas.  Please feel free to contact me off list.
>
>
>
> Best,
>
>
>
> Chris Daum
>
> Oasis Montana Inc.
>
> 406-777-4309 or 4321
>
> 406-777-4309 fax
>
> www.oasismontana.com
>
>
>
>
>
>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
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Re: [RE-wrenches] What would you do/say?

[Chris Mason]

The most important thing with these types of jobs and customers is to
clarify the terms of engagement. If you want to take on the job, make it
very clear that you charge by the hour and guarantee no results. Bill
frequently and get paid before you move on.
Get a substantial deposit, it will probably be the only money you get.
Write a contract. I had a customer ask me to install a battery based solar
system they bought from China. I agreed as they were previously customers
and we needed some work. The system did not work properly, the specs were
all wrong for their needs. They argued over everything and would not listen
to any reason. I got paid because I had a contract and it was very clear we
were only responsible for wiring it up.
I had them purchase a disconnect for the grid feed to the inverter and they
argued for days that they didn't need it, and that the disconnect was
stealing electricity from the grid.

You can't win on these jobs, unless you make a load of money.



On Fri, Feb 26, 2021 at 12:36 PM Ray  wrote:

> Ok, Nick wins.  That's definitely the worst I've ever seen.  That took
> years of dedication to make that look that bad. The soot? just insuring
> you maintain your top spot for years to come.  This brings up another
> part of this: the customer has to be willing not only to allow you to
> completely rewire the system, they also have to be willing to possibly
> relocate equipment, like that generator.  I haven't had the soot, but I
> have had generators in the same room as the equipment, which caused
> batteries and electronics to over heat.
>
> I too used to think I had to solve every problem I came upon, but you're
> just going to wear yourself out.  Both for your profit margin but also
> your sanity, you've got to pick the jobs that are best for you.
>
> Back to the firing clients: some of these folks seem to think there is
> an entire phone book of off grid electricians they can call, if one
> doesn't work out.  However, savvy customers recognize how important we
> are to their life style, and so pay promptly and treat us with respect.
>
> Ray Walters
> Remote Solar
> 303 505-8760
>
> On 2/26/21 12:38 AM, Nick A Lucchese wrote:
> > Yes, an interesting thread. Glad to hear I’m not the only one seeing
> > this more and more these days. Internet lowballers and Youtube “pros”
> > aren’t helping the situation either. There is always a bit of guilt
> > not helping someone out especially after hearing that declining to
> > help really often unfolds into more unfortunate turns for them. It’s
> > always a balance of what's best for me and my time versus the best for
> > the safety of our community. Just have to accept that I can’t save
> > everyone and perhaps by not they’ll find someone else that needs the
> > experience.
> >
> > As far as “firing" a customer yes that can feel really good. I did
> > that a couple years ago with a client I had been helping for 16 years.
> > It was the best $830 I’ve ever walked away from! Brings a smile to my
> > face to this day!
> >
> > Just for fun, here’s a sweet system I declined to work on a few years
> > back. He didn’t like the fact that I told him I was going to
> > completely remove it before re-installing it and then charge him a
> > $300 fee to clean all the carbon deposits off my tools and body each
> > time I was there. Not shown 4’ away is 100 gallons of diesel fuel and
> > the generator. Yet somehow he got this permitted by parking a tractor
> > in front of the access door (so he claimed).
> >
> > Nick
> >
> >
> >
> >
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
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T

Re: [RE-wrenches] home energy monitors

[Chris Mason]

I love the egauge, but I have used Curb effectively.
I now need a multi unit metering solution, for six apartments. Has anyone
found an all electronic system?

On Sun, Feb 7, 2021 at 5:59 PM Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote:

> I should also mention Dead simple installation.
>
> On Sun, Feb 7, 2021, 4:27 PM Jason Szumlanski <
> ja...@floridasolardesigngroup.com> wrote:
>
>> Sense is great. It does take a long time to learn appliances. Over a year
>> in and mine at home is still learning some loads. But it picked up the big
>> ones within a few months. Immediately you can see real time granular load
>> data and you can easily surmise what the larger loads are. I was able to
>> take action from day 1 to identify major drivers of my electricity use.
>>
>> It also saved my septic pump. It was running 24/7 due to a faulty float
>> switch. I caught it after about 2 days when it alerted me that the device
>> was using more energy than usual. Because my pump didn't burn up the Sense
>> monitor paid for itself.
>>
>> The only downside I see aside from the learning delay is that there isn't
>> a robust data export function. The whole web interface is a bit wonky. But
>> the app is pretty intuitive, gorgeous, and insightful.
>>
>> I'm guessing it sends a lot of data to the web, so it might not be
>> suitable for satellite internet for those far off-grid locations.
>>
>> Jason Szumlanski
>> Florida Solar Design Group
>>
>> On Sun, Feb 7, 2021, 1:17 PM jay  wrote:
>>
>>> Hi All,
>>>
>>> I’m wondering what you recommend for whole house energy monitors with
>>> solar option.
>>>
>>> There seem to be two basic types.
>>>
>>> Ones that use actual sensors on a number of the larger load circuits
>>> such as Emporia Vue.  Which can do 16 circuits.
>>>
>>> Or
>>>
>>> ones that use an a program to “learn” what the loads are such as Sense.
>>>
>>> I’ve read a number of reviews about the learning type and many people
>>> say that it never seems to learn many of their appliances.
>>>
>>>
>>> Of course prices range from little to a lot.
>>>
>>> Any recommendations from the gallery?
>>>
>>> thx
>>>
>>> Jay
>>>
>>> peltz power
>>>
>>>
>>>
>>>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] grid sell back time settings on Outback systems

[Chris Mason]

If you don't need a grid connection at other times, I have implemented a
solution using a Raspberry Pi, reading the data using XML from the Mate3
and parsing the values, and opening and closing a relay which control a
contactor. I used SOC as my guide, that's probably the most important
value, but you can also use voltage.
If you know a little programming it is easy to implement. Let me know if
you want any guidance.


On Thu, Feb 4, 2021 at 1:58 PM Jerry Shafer 
wrote:

> Wrenches, Kirpal
> I use the grid connection in the mate, grid use, and set the inverter to
> connect only at that time, its far from. Ideal but seems to do the job. I
> have tried the HBX but its inverse to what l wanted it to do, we are
> fortunate to have a Outback guy on this forum and he may chime in also
> Jerry
>
> On Thu, Feb 4, 2021, 8:22 AM Kirpal  wrote:
>
>> Hi Folks
>> We have a scenario where we would like to control when our system sells
>> power back to the grid.  Basically, we only want to sell back while the sun
>> is shining. We would like to stop selling based on programmed clock
>> settings.  I know in HBX mode we can control when we buy from the grid,
>> wondering if anyone knows how to control if and when we sell to the grid,
>> separate from voltage set points.  In this situation we basically don't
>> want to sell hydro power back at night.
>> We can create our own relay controls to prevent if we need to, but hoping
>> someone has a Mate controller based programming solution.  I can't seem to
>> find it and at first glance Outback tech support didn't have an answer...It
>> was a new tech support guy I spoke with and he was going to do some
>> research and get back to me.
>> 100 Thanks!
>>
>> Sunny Regards,
>> Kirpal Khalsa
>> Oregon LRT#25
>> Oregon Solarworks LLC
>> www.oregonsolarworks.com
>> 541-299-0402
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
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Re: [RE-wrenches] Subject: PV shade structure

[Chris Mason]

Thanks for the info, I'm interested in using it in the Caribbean.

On Fri, Jan 15, 2021 at 7:28 PM Antony Tersol  wrote:

> We are just finishing a PV structure on a 2nd floor patio.  It is not
> purpose built for solar, but has engineering available.  It uses
> something called Alumiwood, which is aluminum with a finish that makes
> it look like painted wood.  This project used 4 23' 3x8 beams,
> doubled, with a steel c-beam insert for each doubled span.  It had 7
> pairs of 2x6 rafters.  The steel beams were heavy but the alumiwood
> rafters surprisingly light.  3x3 Posts had steel inserts, then
> sandwiched with 2x6 for visual treatment.
>
> We found it from PatioKitsOnline.  We worked with Katie.  They send
> engineering which encompasses all their variants, so it was a little
> bit of guesswork for the assembly.  They do have online videos which
> help to clarify.
>
> We added short pieces of ProSolar 1.5" rail to mount the panels.
> Could do the same with any of the other rail solutions.  Could mount
> direct to the rafters and avoid the extra track - pluses and minuses
> to each method.  You can see them in the picture before modules were
> mounted.
>
> Still figuring out how to waterproof it.
>
> We have no snow-load to worry about, but PatioKits considers snow
> load, as they sell into all areas of the country.
>
> >
> > Message: 1
> > Date: Fri, 15 Jan 2021 06:02:01 -0700
> > From: "Dana Orzel" 
> > To: "'RE-wrenches'" 
> > Subject: [RE-wrenches] PV shade structure
> > Message-ID: <005401d6eb3e$9ead1010$dc073030$@solarwork.com>
> > Content-Type: text/plain; charset="us-ascii"
> >
> > Hey Now All You Wise Ones!
> >
> >
> >
> > I got a request for a 2nd story flat roof PV - shade structure yesterday.
> > This being snow country we have 100#/sqft snow loading.
> >
> >
> >
> > Has anyone done something in this range? Supplier suggestions?
> >
> >
> >
> > Thanks in advance.
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Dana Orzel  Great Solar Works, Inc.
> >
> > C - 208.721.7003   d...@solarwork.com
> >
> > Idaho Contractor - # 028765 Idaho PV # 028374
> >
> > NABCEP # 051112-136   www.solarwork.com
> > <http://www.solarwork.com/>
> >
> > "Responsible Technologies for Responsible People since 1988"
> >
> > P Please consider the environment before printing this email.
> >
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Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
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Re: [RE-wrenches] Growatt 5k inverter w/ transformer, more China junk?

[Chris Mason]

The Growatt inverters are top quality, they ship a huge amount of
inverters. They make US models in split phase. What happened here is the
client ordered something he knew nothing about from a vendor that also
knew nothing. I run into this all the time. That's what we get the big
bucks for.
We buy a lot of chinese inverters for different islands. If we want 230V 2
wire to suit the island, that's what we order. In some cases we order 120V,
some are 240V split phase, and some are 230V.
If it's off-grid, will there be a requirement for UL listing? I would not
worry about the quality of the inverter, they are excellent. I would worry
about the design. If you are not confident, walk away. You will be expected
to make it work or keep trying, and the damage to your reputation if it all
fails will be hard to counter. The client is never wrong.

On Mon, Jan 4, 2021 at 7:33 PM Chris Schaefer 
wrote:

> G'Day and Happy New Year's All,
>
> Just wanted to share this with you all. A potential client purchased a
> somewhat complete system off the internet and is now seeking an installer.
> I know, same old story. The package came with two Growatt SPF-5000 ES
> inverters with two Huawei HW-TX-5000 transformers.  The twist to the story
> is apparently the inverters put out 230vac on a single leg and the
> transformers are required to split the 240vac into two legs of 120. I've
> never come across an inverter like this. As an off gridder the first thing
> I think of is the inefficiencies of the additional transformers to do
> something like this when we have plenty of manufacturers that don't require
> this. I'd love to hear your thoughts on this setup and possible experiences
> and pitfalls to beware of.
>
> PS the client is kicking themselves in the butt, lol.
>
> Gratefully,
> Christopher--
>
> Chris Schaefer’s
> 
>
> *Tel/Fax 585-229-2083 or Cell 585-748-1870 *
> *5115 South Hill Road ~ Canandaigua New York 14424**www.solarandwindfx.com
> <http://www.solarandwindfx.com> ~ E-mail: ch...@solarandwindfx.com
> *
>
>
> Thomas Jefferson, the author of our great Constitution, once said,
> "democracy" will cease to exist when you take away from those who are
> willing to work and give to those who would not."
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Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
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WhatsApp 264.235.5670
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Re: [RE-wrenches] GTBB inverters without batteries

[Chris Mason]

The Generac PWRcell inverter can be stand alone if the customer wants to
add a battery later.

On Mon, Oct 5, 2020 at 1:47 PM Jeff Clearwater 
wrote:

> Hey Esteemed colleagues.
>
> I'm curious which GTBB inverters folks are installing when the customer
> can't afford batteries right away.
>
> How do StorEdges, Skyboxes, PWRCells perform in purely grid-tied mode with
> no battery and any advantages - disadvantages of various options folks want
> to point out or considerations for the upgrade path of each?
>
> Thanks,
>
> Jeff
>
> ~~~
> Jeff Clearwater
> Village Power Design
> www.villagepowerdesign.com
> cell - 413-559-9763
> ~~~
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
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Re: [RE-wrenches] Pika Support by chance?

[Chris Mason]

I'm a PWRCell dealer and a Generac generator dealer, I could ask if you
want. Contact me off list and I will get the serial number and find out.
Generac will offer generator input soon, likely before the end of the year.

On Fri, Sep 11, 2020 at 11:00 AM Jeremy Rodriguez 
wrote:

> If anyone has any info on how to get a hold of The former PIKA ENERGY
> support group, please contact me off list.
> Or if anyone knows where one could get one of their inverters
> rebuilt/repaired let me know.
>
> Jeremy Rodriguez
> Solar Installation / Design Expert
> All Solar, Inc.
> 1463 M St
> Penrose Colorado 81240
>
> Sent by Jeremy's iPhone. Sorry for typos and shorthand.
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
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Re: [RE-wrenches] Pentair Pump power

[Chris Mason]

My experience with the Pentair variable speed pool pumps is that they start
full speed and then slow, which is exactly what you don't want. The well
pumps may be different.

On Tue, Sep 22, 2020 at 5:58 PM Dana Orzel  wrote:

> If you have 240 VAC look at the Pentair wild AC pumps I have one at 20 GPM
> and am a believer. Tapers on - soft start, varies the volts & amperage with
> flow and tapers the amperage down as it reaches a full expansion tank.
>
> Even better my local well pump installer sells & services it so I do not
> have to! Getting a little smarter as I get older.
>
>
>
> Dana Orzel  Great Solar Works, Inc.
> C - 208.721.7003   d...@solarwork.com
> Idaho Contractor - # 028765 Idaho PV # 028374
> NABCEP # 051112-136   www.solarwork.com
> "Responsible Technologies for Responsible People since 1988"
>  Please consider the environment before printing this email.
>
>
> -Original Message-
> From: RE-wrenches  On Behalf
> Of frenergy
> Sent: Tuesday, September 22, 2020 1:12 PM
> To: re-wrenches@lists.re-wrenches.org
> Subject: [RE-wrenches] Pump power
>
> Wrenchers,
>
>  We're upgrading an off-grid water system.  Dynamic head while
> pumping at 20 GPM is 150 ft from water level to wellhead and then its 85 ft
> vertical to storage tank so 235 ft total head to open discharge.  We would
> like to get most of that 20 GPM, we need to know if there is personal
> experience with starting a 1.5 or 2 HP, 240 vac, 2 wire submersible pump
> against that kind of head with an Outback Flex
> Power2 (2 X VFXR3648A-01 inverters).
>
>  The FP2 will also be powering standard off-grid loads. There
> is plenty of battery behind the inverters.  If a soft-start solution is
> required, some specifics would be great. Grundfos doesn't seem to have an
> option for these requirements, solar-direct is not an option at this
> location.
>
> Thanks,
>
> Bill
>
> Feather River Solar Electric
> Bill Battagin, Owner
> 4291 Nelson St.
> Taylorsville, CA 95983
> 530.284.7849
> CA Lic 874049
> www.frenergy.net
>
>
> --
> This email has been checked for viruses by Avast antivirus software.
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] Commercial three phase inverter @208V

[Chris Mason]

One of my big concerns with inverters is corporate stability. I know SMA
and Fronius are going to be around but I've seen too many brands disappear.

On Fri, Sep 18, 2020 at 7:02 PM Garrison  wrote:

> If you do go with a transformer I'll second Dongan.  They know solar and
> will build to match your inverter output so no material is wasted.
>
> CPS just released a 25kW 208V inverter...but it might be more cost
> effective to use a 480V inverter and transformer depending on layout,
> conduit length, equipment location, etc.
>
> Best,
> Garrison Riegel
>
> On Fri, Sep 18, 2020 at 5:31 PM August Goers  wrote:
>
>> We have a similar size system in the works and a designer recommended
>> Dongan transformers: https://dongan.com/product/
>>
>> I have not sourced them or worked with them yet, but they definitely have
>> models that will work spec-wise with the CORE1 inverters.
>>
>> August
>>
>>
>> On Fri, Sep 18, 2020 at 3:10 PM Jerry Shafer 
>> wrote:
>>
>>> Wrenches
>>> I use the SMACore and step-down transformer
>>> Jerry
>>>
>>> On Fri, Sep 18, 2020, 1:04 PM Chris Mason 
>>> wrote:
>>>
>>>> I'm bidding a commercial rooftop of about 200KW using string inverters.
>>>> The voltage is 208V 3Ph 60Hz, and I can't find an inverter over 15KW. I was
>>>> hoping to use the SMA 50KW CORE 1 but everything is 480V. Any leads on a
>>>> reputable inverter?
>>>>
>>>> --
>>>> Chris Mason
>>>> Solar systems designer
>>>> Generac Generators Industrial technician
>>>>
>>>> Comet Systems Ltd DBA Comet Solar
>>>> Anguilla Cell  264.235.5670
>>>> WhatsApp 264.235.5670
>>>> Skype: netconcepts
>>>> www.cometsolar.com <http://www.cometenergysystems.com/>
>>>> ___
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>>>>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
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Re: [RE-wrenches] Commercial three phase inverter @208V

[Chris Mason]

The actual system I am proposing is 1 x 200KW and 1 x 50KW on another
building so I am thinking 5 x 50KW Core 1 inverters.

On Fri, Sep 18, 2020 at 4:36 PM Matt Partymiller  wrote:

> Three Core 62s with a transformer is a great solution.  Lots of Fronius
> 15s could work but you could buy a backup transformer for the difference.
> Contact me off-list if you need help finding transformers.  SMA will also
> direct you to some good solutions if pressed.
>
>
>
> Matt
>
>
>
>
>
> *From:* RE-wrenches  *On
> Behalf Of *Chris Mason
> *Sent:* Friday, September 18, 2020 4:04 PM
> *To:* RE-wrenches 
> *Subject:* [RE-wrenches] Commercial three phase inverter @208V
>
>
>
> I'm bidding a commercial rooftop of about 200KW using string inverters.
> The voltage is 208V 3Ph 60Hz, and I can't find an inverter over 15KW. I was
> hoping to use the SMA 50KW CORE 1 but everything is 480V. Any leads on a
> reputable inverter?
>
>
>
> --
>
> Chris Mason
>
> Solar systems designer
>
> Generac Generators Industrial technician
>
>
>
> Comet Systems Ltd DBA Comet Solar
> Anguilla Cell  264.235.5670
>
> WhatsApp 264.235.5670
>
> Skype: netconcepts
>
> www.cometsolar.com <http://www.cometenergysystems.com/>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] Commercial three phase inverter @208V

[Chris Mason]

Thank you for taking the time to recommend this.
Transformers are easy, we're an electrical contractor when we are not
installing solar and we supply high voltage products to projects. Also a
generator dealer but that's another story.
I was about to price the transformers as a last resort. Have you had any
issues with inductance, does the power factor suffer using transformers?
If possible, I'm going to look at running 480V to the main distribution
board and connecting there, but I can't do a site plan so that's
information I don't have.


On Fri, Sep 18, 2020 at 4:36 PM Matt Partymiller  wrote:

> Three Core 62s with a transformer is a great solution.  Lots of Fronius
> 15s could work but you could buy a backup transformer for the difference.
> Contact me off-list if you need help finding transformers.  SMA will also
> direct you to some good solutions if pressed.
>
>
>
> Matt
>
>
>
>
>
> *From:* RE-wrenches  *On
> Behalf Of *Chris Mason
> *Sent:* Friday, September 18, 2020 4:04 PM
> *To:* RE-wrenches 
> *Subject:* [RE-wrenches] Commercial three phase inverter @208V
>
>
>
> I'm bidding a commercial rooftop of about 200KW using string inverters.
> The voltage is 208V 3Ph 60Hz, and I can't find an inverter over 15KW. I was
> hoping to use the SMA 50KW CORE 1 but everything is 480V. Any leads on a
> reputable inverter?
>
>
>
> --
>
> Chris Mason
>
> Solar systems designer
>
> Generac Generators Industrial technician
>
>
>
> Comet Systems Ltd DBA Comet Solar
> Anguilla Cell  264.235.5670
>
> WhatsApp 264.235.5670
>
> Skype: netconcepts
>
> www.cometsolar.com <http://www.cometenergysystems.com/>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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[RE-wrenches] Commercial three phase inverter @208V

[Chris Mason]

I'm bidding a commercial rooftop of about 200KW using string inverters. The
voltage is 208V 3Ph 60Hz, and I can't find an inverter over 15KW. I was
hoping to use the SMA 50KW CORE 1 but everything is 480V. Any leads on a
reputable inverter?

-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] Pika Support by chance?

[Chris Mason]

THe reason they are offering it is probably that they already were Generac
dealers so adding this was an easy addition. Also, Generac is marketing
heavily to dealers now.

On Fri, Sep 11, 2020 at 2:52 PM Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote:

> We are seeing tons of companies in Florida offering Generac/Pika now. They
> didn't do it when it was Pika, so why would they now that it has an orange
> label? Crazy.
>
> No generator input makes zero sense and even less sense for a generator
> manufacturer.
>
>
>
>
>
> On Fri, Sep 11, 2020 at 12:58 PM Chris Schaefer 
> wrote:
>
>> Jeremy,
>> Pika was bought out by Generac and rebranded as their PWR cell. Most of
>> the old crew from Pika are now working for Generac. It's beyond me that
>> Generac bought them and yet they still don't have a generator input. That's
>> why I could never sign on to the Pika product line. Good luck.
>>
>> Christopher
>>
>> On Fri, Sep 11, 2020 at 11:00 AM Jeremy Rodriguez 
>> wrote:
>>
>>> If anyone has any info on how to get a hold of The former PIKA ENERGY
>>> support group, please contact me off list.
>>> Or if anyone knows where one could get one of their inverters
>>> rebuilt/repaired let me know.
>>>
>>> Jeremy Rodriguez
>>> Solar Installation / Design Expert
>>> All Solar, Inc.
>>> 1463 M St
>>> Penrose Colorado 81240
>>>
>>> Sent by Jeremy's iPhone. Sorry for typos and shorthand.
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>>>
>>
>> --
>>
>> Chris Schaefer’s
>>
>> <https://mailtrack.io/trace/link/3d3dc22e74ef49047bd40522641b0e079a8cf003?url=http%3Awww.solarandwindfx.com=1613865=3cfb0a5c0c593f73>
>>
>> *Tel/Fax 585-229-2083 or Cell 585-748-1870 *
>> *5115 South Hill Road ~ Canandaigua New York 14424**www.solarandwindfx.com
>> <https://mailtrack.io/trace/link/58b878c9cd6b51c18d243fb736ab5661c45ab6c1?url=http%3A%2F%2Fwww.solarandwindfx.com=1613865=85ac93338d7ee1e7>
>> ~ E-mail: ch...@solarandwindfx.com *
>>
>>
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Re: [RE-wrenches] Charging a Bolt with an SW

[Chris Mason]

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Re: [RE-wrenches] Charging a Bolt with an SW

[Chris Mason]

I had a Nissan Leaf and a 240v charger, we had no problem using our Radian
to charge it during the day.

On Sat, Jun 6, 2020, 22:11 Hilton Dier III  wrote:

> The issue with EV chargers is that they create a lot of reactive power.
> Think of it as "slosh" in the waveform. That means that charging at 2,000
> watts sloshes a lot more than 2kW through the cable, plug, outlet, and from
> the inverter. If you've got a reasonably good sinewave inverter the charger
> will like it fine. However, the inverter might not like the charger if you
> cut things too close. Make sure to have a lot of top end left in your
> inverter. Always use a transformer based inverter. The SW series has a big
> chunk of metal in it, so that's good. At 120V the Bolt will only draw 1440
> watts max.
>
> An aftermarket Bolt 240V charger can draw up to 32 amps. That's 7.7 kW, so
> too big for an SW. Treat it more like 40 amps. The OEM 120/240 EVSE (smart
> charging cord) that comes with the car can draw 8 or 12 amps at 120V or 12
> at 240V. Assume that the 8 amps is really 12 and the 12 is really 15 or a
> bit more. I have seen 15 amp plugs and outlets with the hot prong melting
> plastic around it. The plug on the OEM EVSE is 20A rated but make sure your
> outlet is as well.
>
> --
> Hilton Dier III
> Missisquoi River Hydro
> Renewable Energy Design
>
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Re: [RE-wrenches] Offgrid Generators?

[Chris Mason]

Ray,
Let me try to address some of those issues for you.
1) You can get the activation code before you take it to site, you just
need the serial number. Generac has a good warranty policy but they need to
know where the generator is and when it is installed to be able to provide
that.
2) An electrician can connect the wires but you would not believe the
installations we have seen, done by licensed electricians. We have a dealer
forum where installers post pictures of installations they find, and the
mistakes are criminal and dangerous. I once found a propane 20KW generator
running side a shipping container, doors closed.
3) Generac does not do direct support for generators, they require
customers call a dealer. The dealer can then call Generac, and often does.
I can't even call them if my certification expires.
4) If the generator is under warranty, you may not pay anything, depending
on the coverage. Generac is offering up to ten year warranties. But once it
is out of warranty, you will have to pay. Dealers don't work for free. The
average electrician won't be able to diagnose problems reliably on these
generators.
The residential air cooled generators are very reliable and rarely have
problems if well maintained. Techs should be traveling with common parts, I
bring a controller and a few other parts so I can solve the problem in one
go.
Blown engines are rare, but they do happen. Generally in the first few
hours, so under full warranty and replacement is generally done at
Generac's expense.
If you do have issues, contact me and I will try to help you.










On Fri, Feb 28, 2020 at 4:41 PM Ray  wrote:

> Some of the issues have been Generac not providing a simple wiring
> schematic, nor simply labeling the 2 start wires.  2nd is requiring either
> internet connection or a call in to get the start code.  Both have been
> very problematic in remote locations with no phone service.  Totally
> unnecessary.  We don't need a Generac tech just to connect wires, I'm the
> licensed electrician.  Last time I called Generac, (control error not
> listed in the manual) they insisted I needed to call in a service tech, and
> offered zero trouble shooting.  I fixed the problem by pulling the fuse and
> resetting the controller.  3rd, service requires a long expensive trip by
> the service tech, who then diagnoses the problem, has to order the parts
> and return weeks later. This means every issue takes 2 round trips to
> resolve.  If its a bigger issue, it requires a truck lift to haul the 500
> lb unit in to the shop.  We're hearing $500 just to get the generator to
> the shop, then another $500 to reinstall it after.
>
> Failures have included several catastrophic engine failures, blowing oil
> every where, some of these have been in the first few hundred hours. Lots
> of control issues, one recently had voltage that varied from 90 to 130, 45
> to 70 Hz, and the inverter wouldn't even connect to it.
>
> I quit selling generators a long time ago, because I didn't want the
> service liability.  I'm not a mechanic, and I don't want to be.  I do
> however, need a generator I can recommend in good faith.  The Ecogen has
> made us look pretty bad.  Glad I didn't sell them, but then I've seen some
> large water cooled unit that worked well.
>
> Ray Walters
> Remote Solar
> 303 505-8760
>
> On 2/28/20 5:14 AM, Chris Mason wrote:
>
> Ray,
> I'm a Generac dealer. Why are you having support problems? Generac has a
> large dealer network, if the unit is under warranty you should have no
> problem getting it fixed. Did you buy through a dealer and have them
> install it? Why are the services expensive?
>
> What failures are you seeing?
>
> There is a hole in the market for products in this application. Virtually
> no-one makes an affordable ~10KW diesel enclosed 2 wire start 1,800 rpm
> reliable diesel generator. I once ordered, on spec, a 9KW Perkins engine
> liquid cooled enclosed diesel from a factory in China I deal with. I sold
> it to a customer that ran it 18 hours a day on 100% load, to power his
> restaurant refrigeration outside service hours. It lasted him years, it
> must have thousands of hours on it.
> I think the big problem in the US is getting permits for diesel generators.
>
>
>
> On Thu, Feb 27, 2020 at 6:25 PM Ray  wrote:
>
>> I know we have covered this before, but I just continue to be
>> disappointed with the Generac Ecogen.  Very high failure rate, and
>> support is poor.  Service requires expensive on site service. Also the
>> no load AC draw and programming setup is just not off grid ready at
>> all.  I'm still not seeing any other great choices, though.  Here's some
>> other possibilities:
>>
>> 1) Quality portable, like the Honda EU 7000i or Northstar with Honda
>> motor.  Not the bes

Re: [RE-wrenches] Offgrid Generators?

[Chris Mason]

Generac also has a nice 15KW Diesel Protector unit, that'll keep the lights
on very nicely, is relatively inexpensive and I haven't heard any
complaints about them failing. We had one Protector Diesel with a failed
fuel pump solenoid but I changed it out under warranty and there hasn't
been any other issues.
Of course they are not $4,000, you are not going to get a liquid cooled
generator for under $10,000.

On Thu, Feb 27, 2020 at 6:25 PM Ray  wrote:

> I know we have covered this before, but I just continue to be
> disappointed with the Generac Ecogen.  Very high failure rate, and
> support is poor.  Service requires expensive on site service. Also the
> no load AC draw and programming setup is just not off grid ready at
> all.  I'm still not seeing any other great choices, though.  Here's some
> other possibilities:
>
> 1) Quality portable, like the Honda EU 7000i or Northstar with Honda
> motor.  Not the best choice especially for autostart, no propane, but at
> least they can take it in to the shop if it goes down.
>
> 2) Kubota (or MQ) diesel. expensive, and possible cold weather start
> issues?
>
> 3) 20+ kW water cooled, 1800 rpm propane model.  Overkill, expensive,
> but probably will last a really long time.
>
> 4) Similar Home standby unit, but Kohler brand.  Kohler used to be
> great, but now a days I'm not so sure.
>
> I just can't keep recommending a generator I know has been giving other
> customers trouble.  Any new ideas on this age old problem?
>
> --
> Ray Walters
> Remote Solar
> 303 505-8760
>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] Offgrid Generators?

[Chris Mason]

William,
Generac has a structure where box stores like HD and Lowes sell the
residential generators and arrange local certified dealers to perform the
installation, warranty and service work. The dealers are not real fond of
it but Generac can't get to be the largest brand relying on dealers for
sales. Generac is pretty good on compensating dealers for warranty work so
there are a number of dealers that make their living on installation,
servicing and warranty work.

On Thu, Feb 27, 2020 at 10:20 PM William Miller 
wrote:

> Ray, Wrenches:
>
> My experience with Generac is similar to yours.  Coincidentally, I just
> received an invite from our local Greentech to attend a Generac training.
> Apparently Greentech thinks they should sell generators.  This sounds like
> a
> bad fit for a supply house.
>
> When I politely declined the invitation, I mentioned that with any big
> ticket item, especially one with moving parts, I like to create a
> relationship with whoever will be servicing that item.  This starts with
> buying the unit from a reputable local shop.  If you subscribe to this
> theory,  the brand of generator you choose should have someone to service
> it
> within reasonable range.  This may narrow your choices.
>
> William
>
> PS:  The smallest generator I have purchased lately is a 12kw vertical
> crankshaft Kohler.  It gets minimum hours but seems to run OK.
>
> W
>
> Miller Solar
> 17395 Oak Road, Atascadero, CA 93422
> 805-438-5600
> www.millersolar.com
> CA Lic. 773985
>
> -Original Message-
> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
> Behalf Of Ray
> Sent: Thursday, February 27, 2020 2:26 PM
> To: RE-wrenches
> Subject: [RE-wrenches] Offgrid Generators?
>
> I know we have covered this before, but I just continue to be
> disappointed with the Generac Ecogen.  Very high failure rate, and
> support is poor.  Service requires expensive on site service. Also the
> no load AC draw and programming setup is just not off grid ready at
> all.  I'm still not seeing any other great choices, though.  Here's some
> other possibilities:
>
> 1) Quality portable, like the Honda EU 7000i or Northstar with Honda
> motor.  Not the best choice especially for autostart, no propane, but at
> least they can take it in to the shop if it goes down.
>
> 2) Kubota (or MQ) diesel. expensive, and possible cold weather start
> issues?
>
> 3) 20+ kW water cooled, 1800 rpm propane model.  Overkill, expensive,
> but probably will last a really long time.
>
> 4) Similar Home standby unit, but Kohler brand.  Kohler used to be
> great, but now a days I'm not so sure.
>
> I just can't keep recommending a generator I know has been giving other
> customers trouble.  Any new ideas on this age old problem?
>
> --
> Ray Walters
> Remote Solar
> 303 505-8760
>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] Offgrid Generators?

[Chris Mason]

Ray,
I'm a Generac dealer. Why are you having support problems? Generac has a
large dealer network, if the unit is under warranty you should have no
problem getting it fixed. Did you buy through a dealer and have them
install it? Why are the services expensive?

What failures are you seeing?

There is a hole in the market for products in this application. Virtually
no-one makes an affordable ~10KW diesel enclosed 2 wire start 1,800 rpm
reliable diesel generator. I once ordered, on spec, a 9KW Perkins engine
liquid cooled enclosed diesel from a factory in China I deal with. I sold
it to a customer that ran it 18 hours a day on 100% load, to power his
restaurant refrigeration outside service hours. It lasted him years, it
must have thousands of hours on it.
I think the big problem in the US is getting permits for diesel generators.



On Thu, Feb 27, 2020 at 6:25 PM Ray  wrote:

> I know we have covered this before, but I just continue to be
> disappointed with the Generac Ecogen.  Very high failure rate, and
> support is poor.  Service requires expensive on site service. Also the
> no load AC draw and programming setup is just not off grid ready at
> all.  I'm still not seeing any other great choices, though.  Here's some
> other possibilities:
>
> 1) Quality portable, like the Honda EU 7000i or Northstar with Honda
> motor.  Not the best choice especially for autostart, no propane, but at
> least they can take it in to the shop if it goes down.
>
> 2) Kubota (or MQ) diesel. expensive, and possible cold weather start
> issues?
>
> 3) 20+ kW water cooled, 1800 rpm propane model.  Overkill, expensive,
> but probably will last a really long time.
>
> 4) Similar Home standby unit, but Kohler brand.  Kohler used to be
> great, but now a days I'm not so sure.
>
> I just can't keep recommending a generator I know has been giving other
> customers trouble.  Any new ideas on this age old problem?
>
> --
> Ray Walters
> Remote Solar
> 303 505-8760
>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
www.cometsolar.com <http://www.cometenergysystems.com/>
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Re: [RE-wrenches] automatic transfer switches

[Chris Mason]

If you are doing it on the AC side, a Generac transfer switch has the
capability and is designed to do this. It's easy to rig an interface as I
discussed privately with Bill.

On Fri, Nov 29, 2019 at 1:29 AM Jerry Shafer 
wrote:

> Wrenches
> Need to be careful here to use something that has the interrupt KVA rating
> required to prevent an arc in the event of an under load opening with the
> switch proper AIC rating 10,000 or more, last thing I think you want is to
> have that kind of liability on products that are not designed for that type
> of use. But thats just me.
> NABCEP PV Inspector
> California Solar contractor
> Jerry
>
> On Mon, Nov 25, 2019 at 8:52 PM Bill Hennessy  wrote:
>
>> hi folks--
>>
>> We're installing a grid-tied, battery backup system on a farm where the
>> service entrance is on a pole in the yard. At the single-phase, 240v,
>> service entrance, there are two main breaker subpanels--one going to the
>> house and one to the barn. The buildings are each about 100 feet away from
>> the pole in opposite directions. The PV/battery system is located in the
>> barn. When utility power is lost and the battery backup kicks in, we are
>> looking for a way to bypass the house subpanel at the pole so it won't
>> backfeed the grid.
>>
>> When the grid drops out, we need to tie the backup power coming from the
>> barn to the line going to the house. We're thinking an automatic transfer
>> switch installed at the pole will do the job, but the transfer switches
>> seem to have built in delays to work with starting a generator. The
>> switch does not have to be service entrance rated.
>>
>> It looks like the Asco 300 series has time delay adjustments, but it is
>> pricey and has a seven-week lead time. (Thank-you PG)
>>
>> The battery backup system will switch over in milliseconds and we were
>> hoping to find something similar for the transfer operation at the pole.  
>> We're
>> looking for something simple--hopefully a basic transfer switch that will
>> quickly switch and drop out when grid power is restored.
>>
>> Would appreciate any thoughts or suggestions.
>>
>> regards, bill
>>
>> Bill Hennessy
>> Berks Solar, LLC
>> 371 Centennial Rd
>> Mertztown, PA 19539
>>
>> o 610 682 4300
>> c 484 560 4666
>> NABCEP certified installer
>> PA contractor #44411
>> www.berkssolar.com
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
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Re: [RE-wrenches] automatic transfer switches

[Chris Mason]

If you only want to change over, why not use a contactor with three poles,
a NO and NC contact? that will switch instantly. Use Utility to power the
coil, it will switch to utility when the power is restored.

On Tue, Nov 26, 2019 at 2:57 AM Jerry Shafer 
wrote:

> There is the SMA Automatic transfer switch if you go with the SMA battery
> inverter and SMA pv inverter, it can be located seperate of the battery and
> inverter and will take up to 30 kwhrs. of capacity
> Just a thought
>
> On Mon, Nov 25, 2019, 10:52 PM Bill Hennessy  wrote:
>
>> hi folks--
>>
>> We're installing a grid-tied, battery backup system on a farm where the
>> service entrance is on a pole in the yard. At the single-phase, 240v,
>> service entrance, there are two main breaker subpanels--one going to the
>> house and one to the barn. The buildings are each about 100 feet away from
>> the pole in opposite directions. The PV/battery system is located in the
>> barn. When utility power is lost and the battery backup kicks in, we are
>> looking for a way to bypass the house subpanel at the pole so it won't
>> backfeed the grid.
>>
>> When the grid drops out, we need to tie the backup power coming from the
>> barn to the line going to the house. We're thinking an automatic transfer
>> switch installed at the pole will do the job, but the transfer switches
>> seem to have built in delays to work with starting a generator. The
>> switch does not have to be service entrance rated.
>>
>> It looks like the Asco 300 series has time delay adjustments, but it is
>> pricey and has a seven-week lead time. (Thank-you PG)
>>
>> The battery backup system will switch over in milliseconds and we were
>> hoping to find something similar for the transfer operation at the pole.  
>> We're
>> looking for something simple--hopefully a basic transfer switch that will
>> quickly switch and drop out when grid power is restored.
>>
>> Would appreciate any thoughts or suggestions.
>>
>> regards, bill
>>
>> Bill Hennessy
>> Berks Solar, LLC
>> 371 Centennial Rd
>> Mertztown, PA 19539
>>
>> o 610 682 4300
>> c 484 560 4666
>> NABCEP certified installer
>> PA contractor #44411
>> www.berkssolar.com
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
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Re: [RE-wrenches] 600V DC contactor

[Chris Mason]

https://www.amazon.com/Siemens-3TC48-17-0B-Pole-Contactor-600V/dp/B00WH0QNHA

I've done this with Sonnen previously, interrupted the inverter output to
precent power being sent back to the grid. You might look at to inverters
and interrupt one.

On Fri, Nov 22, 2019 at 11:47 PM Chris Sparadeo 
wrote:

> Hi wrenchers,
>
>
> I am currently on the look out for a DC contactor to suit my needs. A
> little background:
>
>
> Per Sonnen Batterie tech support’s recommendation I have installed a 10 kW
> SolarEdge HD Wave inventer coupled with the Sonnen Eco 12. Although the
> Sonnen Eco 12 uses an Outback Radian 8kW multimode inverter(of which
> Outback suggests to max AC couple input of 5kW) Sonnen says that AC PV
> input greater than 8kW will require a contactor  to interrupt a string or
> two of the grid interactive inverter so that it’s output will remain less
> than the max 8kW input. That’s fine and well, but when asked directly,
> Sonnen didn’t have a part # for the contactor and suggested that anything
> over 150V DC would be difficult to find. Anyone know of a 600V rated
> contactor that would suit the bill? Essentially the contactor would need to
> sense grid interruption (via a 15A-AC breaker) and open a 600 V rated DC
> string.
>
>
> I’ve done some preliminary searching and have come up empty handed. Any
> input would be greatly appreciated.
>
>
> Best,
>
>
> Chris
> --
> Chris Sparadeo
>
>
> C_802-369-4458
> H_802-728-3059
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Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
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WhatsApp 264.235.5670
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Re: [RE-wrenches] Fluke 87 replacement

[Chris Mason]

I have the same Hioki and I love it, the bluetooth logging feature is great
for quick surveys, I'm in and out faster than I can set up my Fluke 435
Analyzer.

On Mon, Oct 14, 2019 at 2:47 PM Will White  wrote:

> The Hioki CM4372 seems to be the best clamp-on amp meter for PV out there
> these days. 1,500 VDC, two current ranges, and a ton of other features
> including a bluetooth app that can do logging. Plus it's about the same
> price as a Fluke clamp-on amp meter.
>
> https://www.hioki.com/en/products/detail/?product_key=6362
>
> Thanks,
> Will
>
>   --
> *Will White*
> Curriculum Developer
>
>
> e: w...@solarenergy.org
> w: www.solarenergy.org
> p: 802-272-3092
>
> NABCEP Certified PV Installation Professional
> # 093006-34
>
> *FACT:  If we covered 0.33% of the earth with solar panels, we could power
> the world with renewable energy.*
>
> Do you envision a world powered by renewable energy? Be the change
> <http://solarenergy.org/donate>.
>
> On Mon, Oct 14, 2019 at 2:33 PM Chris Schaefer 
> wrote:
>
>> G'Day All,
>>
>> Well my 24 year old Fluke 87 finally passed. It was a great unit and fit
>> all my needs. Before I go out and buy another I thought I'd reach out to
>> see if any of my peers would suggest anything different or possibly a step
>> above in the Fluke family or another brand?
>>
>> Thanks,
>> Christopher-
>>
>> Chris Schaefer’s
>> 
>>
>> *Tel/Fax 585-229-2083 or Cell 585-748-1870 *
>> *5115 South Hill Road ~ Canandaigua New York 14424**www.solarandwindfx.com
>> <http://www.solarandwindfx.com> ~ E-mail: ch...@solarandwindfx.com
>> *
>>
>>
>> Thomas Jefferson, the author of our great Constitution, once said,
>> "democracy" will cease to exist when you take away from those who are
>> willing to work and give to those who would not."
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>
> --
> *Will White*
> Curriculum Developer
>
>
> e: w...@solarenergy.org
> w: www.solarenergy.org
> p: 802-272-3092
>
> NABCEP Certified PV Installation Professional
> # 093006-34
>
> *FACT:  If we covered 0.33% of the earth with solar panels, we could power
> the world with renewable energy.*
>
> Do you envision a world powered by renewable energy? Be the change
> <http://solarenergy.org/donate>.
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
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Re: [RE-wrenches] seeking PV mounting advice to Shipping Container for Off-grid

[Chris Mason]

I have a bunch of containers, I put solar on a couple. I would weld tabs
onto the container so as to avoid penetrations. The worst thing about
containers is they leak, so holes in the top are a problem. In fact, I
would weld on tabs, put galvanized stringers cross at an angle, put
galvanized purloins along the length of the container, put galvanized
corrugated sheeting on the purloins and the racking of your choice on top.
That way the container roof won't rust and leak, you have your angle, and
the container will be cooler.

On Mon, Sep 23, 2019 at 11:12 AM Lorenzo Ortiz 
wrote:

> Check this company out. <https://boxpower.io/> They have a pretty slick
> solution.
>
> On Mon, Sep 23, 2019 at 6:12 AM Chris Schaefer 
> wrote:
>
>> G'Day All,
>>
>> I'm looking for anyone with advice that has mounted PV to a
>> shipping container roof with minimal to no roof penetrations. The container
>> will not be required to be transported with PV attached, only the racking
>> and only one time to project site. They will not be mounted flat but prefer
>> a 35 degree angle. I was thinking of Unirac's ULA series as they use to
>> have an adjustable leg. I'm not only seeking racking brands but also any,
>> "if I ever did this again I would..." advice.
>>
>> Thanks,
>> Christopher-
>>
>> Chris Schaefer’s
>> 
>>
>> *Tel/Fax 585-229-2083 or Cell 585-748-1870 *
>> *5115 South Hill Road ~ Canandaigua New York 14424**www.solarandwindfx.com
>> <http://www.solarandwindfx.com> ~ E-mail: ch...@solarandwindfx.com
>> *
>>
>>
>> Thomas Jefferson, the author of our great Constitution, once said,
>> "democracy" will cease to exist when you take away from those who are
>> willing to work and give to those who would not."
>> ___
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>
> --
>
> Loren Ortiz
> Technical PV Design Specialist - Commercial/Residential/Off-Grid
>
> lo...@cal-solar.com californiasolarco.com
>
> *Main: 530-274-3671 ext: 311 * *Fax: 530-274-7518*
>
>
>
>
>
> <https://californiasolarco.com/referral_form/>
> *Showroom located at: 149 E Main St. Grass Valley, CA 95945*
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Comet Systems Ltd DBA Comet Solar
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Re: [RE-wrenches] Strategies for staged startup of appliances

[Chris Mason]

g
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> --
>
>
>
> Mac Lewis
>
> *"Yo solo sé que no sé nada." -Sócrates*
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
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WhatsApp 264.235.5670
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Re: [RE-wrenches] Grid tie w/o battery no sell back

[Chris Mason]

I misunderstood the question the two options I listed are battery systems.
What I should have suggested as a solution was the Enphase microinverter
system with the Zero Export profile and Production CTs on the service to
the panel. That will do Zero Export so that all the power produced is self
consumed, there is virtually no exported power to the grid.

On Thu, Aug 29, 2019 at 9:16 AM Chris Mason 
wrote:

> Outback Radian or Pika.
>
> On Wed, Aug 28, 2019 at 9:41 PM Jay  wrote:
>
>> are there any products out there that can do a grid tie w/o batteries but
>> no sell back to the
>> grid?
>>
>> Thx
>> Jay
>>
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>
> --
> Chris Mason
> Solar systems designer
> Generac Generators Industrial technician
>
> Comet Systems Ltd DBA Comet Solar
> Anguilla Cell  264.235.5670
> WhatsApp 264.235.5670
> Skype: netconcepts
> www.cometsolar.com <http://www.cometenergysystems.com/>
>


-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
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Re: [RE-wrenches] Grid tie w/o battery no sell back

[Chris Mason]

Outback Radian or Pika.

On Wed, Aug 28, 2019 at 9:41 PM Jay  wrote:

> are there any products out there that can do a grid tie w/o batteries but
> no sell back to the
> grid?
>
> Thx
> Jay
>
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Re: [RE-wrenches] 120/240 to 3 phase 120/208

[Chris Mason]

Yes, I just did it yesterday, but only if it is a 12 wire alternator. If
you open the connection box on top of the alternator, you will be able to
reconfigure the alternator.
However, that's only possible if the generator was built using a three
phase alternator connected in zig-zag to give single phase - which is very
common.
All the big generators I order are built this way.
If you give me more info on the generator I can tell you how to do it.
https://www.smokstak.com/forum/attachment.php?attachmentid=3483=1125167403


On Tue, Aug 6, 2019 at 10:20 PM Jay  wrote:

> Hi all
>
> Is there a way to convert a 120/240v generator to a 120/208 3 phase output?
>
> Thx
>
> Jay
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-- 
Chris Mason
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Comet Systems Ltd DBA Comet Solar
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Re: [RE-wrenches] Generac Warranty claim ECOGEN 15k (Dana)

[Chris Mason]

When you say it died, what was the problem?

On Sat, Jul 27, 2019 at 5:43 PM Jason Jackson <
ja...@hakaienergysolutions.com> wrote:

> Same experience here in Canada. We installed two Ecogens last year,
> against our better judgement.  Both were dead in under 12 months. One was
> rebuilt under warranty and promptly died again, no coverage in that case.
> Another was refused warranty as it has been used (sparingly) as prime power
> during construction, prior to being connected to the inverter system. No
> warranty if it's not connected to an inverter system on day 1! That model
> was promptly pulled from the market according to our local ASC, and has
> been replaced with something similar apparently.
>
> [image: hakaienergysolutions.com]
> <http://www.hakaienergysolutions.com?utm_source=appogee_medium=email_sig_campaign=signature>
> Jason Jackson, Energy Systems Designer
> Ph: 888 604 3128 xt. 101
> www.hakaienergy.ca
> <http://www.hakaienergy.ca?utm_source=appogee_medium=email_sig_campaign=signature>
>
>
> On Sat, Jul 27, 2019 at 2:07 PM 
> wrote:
>
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>>  Today's Topics:
>>
>>1. Re: Generac Warranty claim ECOGEN 15k (Dana)
>>2. solar inter row shading (jay)
>>3. Re: solar inter row shading (Chris Mason)
>>4. Re: solar inter row shading (Ray)
>>5. Re: solar inter row shading (William Miller)
>>
>>
>>
>> -- Forwarded message --
>> From: Dana 
>> To: "'RE-wrenches'" 
>> Cc:
>> Bcc:
>> Date: Fri, 26 Jul 2019 15:42:35 -0600
>> Subject: Re: [RE-wrenches] Generac Warranty claim ECOGEN 15k
>> Generwrecked strikes again! After 3 fires in the controllers & 2 more
>> engine meltdowns due to oil loss I would not touch a wreck.
>>
>>
>>
>> Dana Orzel  Great Solar Works, Inc.
>> C - 208.721.7003   d...@solarwork.com
>> Idaho Contractor - # 028765 Idaho PV # 028374
>> NABCEP # 051112-136   www.solarwork.com
>> "Responsible Technologies for Responsible People since 1988"
>>  Please consider the environment before printing this email.
>>
>>
>> -Original Message-
>> From: RE-wrenches  On Behalf
>> Of Maverick Brown
>> Sent: Friday, July 26, 2019 11:41 AM
>> To: re-wrenches@lists.re-wrenches.org
>> Subject: [RE-wrenches] Generac Warranty claim ECOGEN 15k
>>
>> Wrenches
>>
>> Any guidance on getting warranty claim approved when their denial reason
>> is the generic “unsafe” installation? There isn’t anything unsafe about the
>> 1.5 year install that I can see. The ECOGEN is connected to an Outback
>> Radian.
>>
>> Generator has 950 hours on it before the brushes melted down from being
>> exposed to engine oil.
>>
>> Thank you,
>>
>> Maverick
>>
>>
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>>
>> -- Forwarded message --
>> From: jay 
>> To: RE-wrenches 
>> Cc:
>> Bcc:
>> Date: Fri, 26 Jul 2019 14:59:06 -0700
>> Subject: [RE-wrenches] solar inter row shading
>> HI All,
>>
>> I’m wondering if there is any programs/apps that do inter row shading?
>> I can’t find any.
&

Re: [RE-wrenches] solar inter row shading

[Chris Mason]

Sketchup with Skelion

On Fri, Jul 26, 2019 at 6:41 PM jay  wrote:

> HI All,
>
> I’m wondering if there is any programs/apps that do inter row shading?
> I can’t find any.
>
> RBI used to have one, it was really slick.
>
> Thanks
>
> jay
>
> peltz power
>
>
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-- 
Chris Mason
Solar systems designer
Generac Generators Industrial technician

Comet Systems Ltd DBA Comet Solar
Anguilla Cell  264.235.5670
WhatsApp 264.235.5670
Skype: netconcepts
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Re: [RE-wrenches] Enphase and Tesla Powerwall

[Chris Mason]

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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] Consolidating meters

[Chris Mason]

It's the consumer's right to have one point of metering and distribute the
power to their loads. I would not ask the utility, I would tell them I was
rewiring and wanted to have only one metering point. It's stupid to pay for
all those meters. Most customers don't realize there is a cost to having
multiple meters and the problems it causes when it comes to self
consumption. We regularly consolidate customers who have one meter for each
guest cottage or main house, once they understand the advantages they
rewire and tell the utility to remove the redundant meters.

On Thu, Jul 4, 2019 at 2:30 PM Andrew Truitt  wrote:

>
> Happy 4th Wrenches!  Has anyone ever been through the process of
> consolidating utility electric meters for a client?  We're talking to an
> HOA that has 15 meters throughout the community for common area loads
> (clubhouse, pool pump, lighting, fountain...) so they're paying a fixed
> monthly charge on each in addition to energy and demand charges.
> Consolidating to a single master meter (possibly with sub-metering) would
> likely lower their costs on its own, and (more importantly?) would improve
> the value proposition for a PV+ESS installation.  We're not sure if the
> community is served by a single or multiple transformers yet, but if it is
> just one then the process should be straightforward from a technical
> standpoint.  The interwebs tell me that some providers (seems like mostly
> co-ops) are open to this, but I can't find anything for this particular
> utility.
>
>
> Regards,
>
>
> Andrew Truitt
>
> www.dr.ventures
> d: 202.486.7507
>
> NABCEP Certified PV Installation Professional ID: 032407-66
> Colorado Journeyman Electrician License No.: 600132
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] Cutting rail

[Chris Mason]

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> --
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> 4291 Nelson St.
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Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
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Re: [RE-wrenches] Lithium Batteries

[Chris Mason]

I'd be very cautious about getting too cosy with any of these battery
companies, it seems their only aim is to get bought. Sonnen was acquired by
Shell Oil, Pika by Generac. I'm a generac dealer so I am exploring what
their intentions are.  I doubt Shell will be gung-ho to continue to support
solar, so where does that leave my Sonnen customers?
Make sure your customers are aware you don't know where this is going and
whether any of these guys will stay the course. Companies like trojan and
Outback are going to be around, but Fortress? Unlikely.




On Fri, May 3, 2019 at 4:34 PM  wrote:

> Hi Howie,
> Have you looked at Fortress Power batteries? We're about to install
> some and they look like a very decent battery. Google will get you the
> basic info to start.
>
>
> Daryl
> Penobscot Solar Design
>
>
>
> > Hi Folks,
> > About to spec my first Lithium battery backup job.  The client is not a
> > heavy user, but wants things done right more than being totally cost
> > effective.
> > We put in 14kW of net metered solar using SolarEdge and now he wants the
> > backup component. This was significantly oversized for his use, but he
> > wanted to be sure he was putting a bunch more back into the grid than he
> > was using (making up for past profligate power usage).  We will be using
> a
> > dual stacked XW 6848, mostly for enough backfeed capacity (we could wire
> > in
> > a transfer switch and only use 1 XW, but he'd prefer this setup instead).
> > I have narrowed down my choice for batteries to either:
> >
> >- (2) Iron Edison 200 amp hour batteries, or
> >- (3) Discover AES 130 amp hour batteries
> >
> > Advantages for the AES are that they integrate directly with the
> Schneider
> > Xanbus network so the Conext battery monitor provides direct insight into
> > the SOC and SOH of the batteries, and they have a slightly higher rated
> > cycle life so higher lifetime energy capacity.
> >
> > Advantages of the IronEdison are they come in a larger amp hour size
> > allowing for only needing 2 vs. 3 batteries, they have an integrated fuse
> > and disconnect, and from my sources are 1/3 less in price.
> >
> > If anyone has any thoughts on any of this, or corrections to my
> > comparison,
> > I'd greatly appreciate it.
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
Skype: netconcepts
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Re: [RE-wrenches] 600 Vdc Transfer Switch

[Chris Mason]

Sorry, correct, this is what I was looking for
https://www.crawfordelectricsupply.com/c/gea-tc10323r-100a-2p-dbl-thr-n3r-120-240v-nonfus-6875?pageView=detailed=transfer%20switch=engaged=12=1=true


On Wed, Dec 19, 2018 at 7:51 PM Glenn Burt  wrote:

> Not a transfer switch. That is a simple DC rated disconnect, like the
> Square D equivalent.
>
> A transfer switch allows one load to be powered by one of two sources – a
> multi-pole, double throw device.
>
>
>
> -Glenn
>
>
>
> *From:* RE-wrenches  *On
> Behalf Of *Chris Mason
> *Sent:* Wednesday, December 19, 2018 2:41 PM
> *To:* RE-wrenches 
> *Subject:* Re: [RE-wrenches] 600 Vdc Transfer Switch
>
>
>
> How about this
>
>
> https://www.crawfordelectricsupply.com/c/gea-thn3361-30a-3p-hd-ss-n1-600v-nonfuse-sw-7046
>
>
>
>
>
> On Wed, Dec 19, 2018 at 8:50 AM Mac Lewis  wrote:
>
> Hello Wrenches,
>
>
>
> Does anyone have a recommendation for a DPDT 600 Vdc rated indoor transfer
> switch?  This would be for selecting from grid-tied inverter to off-grid
> charge controller during a power outage.  Its for a Morningstar 600Vdc
> charge controller that doesn't have  this feature built in.
>
>
>
> Thanks
>
>
>
> --
>
>
>
>
>
>
>
> Mac Lewis
>
> "Yo solo sé que no sé nada." *-Sócrates*
>
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> --
>
> Chris Mason
>
> NABCEP Certified Solar PV Installer™
>
> Solar Design Engineer
>
> Generac Generators Industrial technician
>
>
>
> www.cometsolar.com <http://www.cometenergysystems.com>
>
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>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
Skype: netconcepts
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Re: [RE-wrenches] 600 Vdc Transfer Switch

[Chris Mason]

How about this
https://www.crawfordelectricsupply.com/c/gea-thn3361-30a-3p-hd-ss-n1-600v-nonfuse-sw-7046


On Wed, Dec 19, 2018 at 8:50 AM Mac Lewis  wrote:

> Hello Wrenches,
>
> Does anyone have a recommendation for a DPDT 600 Vdc rated indoor transfer
> switch?  This would be for selecting from grid-tied inverter to off-grid
> charge controller during a power outage.  Its for a Morningstar 600Vdc
> charge controller that doesn't have  this feature built in.
>
> Thanks
>
> --
>
>
>
> Mac Lewis
>
> *"Yo solo sé que no sé nada." -Sócrates*
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Re: [RE-wrenches] Generac Eco-Gen 6 kw

[Chris Mason]

What's the error on the controller

On Mon, Nov 12, 2018, 00:49 John Blittersdorf  Hello Wrenches,
>I have a customer with a Generac EcoGen 6kw that starts and runs for
> about 30 seconds and then shuts down with high engine temp error. The
> engine is stone cold so it must be a temp sensor failure.  Disconnecting
> the sensor or jumpering the two leads together makes no difference. Has
> anyone seen this issue?  The engine runs real smooth until it shuts down.
>
> John Blittersdorf
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Re: [RE-wrenches] Mate 3 shutdown

[Chris Mason]

Outback has been good at sending a crossover replacement, meaning the new
one arrives then you send back the old one. The MATE3 has problems, I have
replaced one twice.

On Wed, Oct 10, 2018 at 9:30 PM Jay  wrote:

> Hi Dana,
>
> If you look at the graphs, are they smooth or really kind of unclear ?
>
> How often do you clear the internal data?
>
> The mate 3 has a fatal flaw. Th internal data will over write code once
> memory is full.
>
> One indicator is locking up, another is the graphs looking unclear.
>
> It’s recommended to clear it at least every 6 months.
>
> And even with current firmware and clearing memory, I still see it happen.
>
> Jay
>
>
>
>
>
>
> On Oct 10, 2018, at 4:51 PM, Dana  wrote:
>
> My learned fellow Sparkies,
>
>
>
> I have at home off-grid Radian with Mate 3 monitor. Periodically &
> randomly my Mate 3 blanks out and requires a reboot (un-plug / re-plug).
> While this is not such a big deal to address, the total loss of ALL the
> performance & usage data is really concerning in the event that I need the
> data for a T/S.
>
>
>
> I have not called OB as there is no cell service at or near the system and
> to do so is a huge time killer back & forth & waiting to check again. I am
> convinced the brain trust here is the answer.
>
>
>
> Has anyone else experienced this?
>
> Any remedial action to correct this issue?
>
>
>
> Let me know & thanks.
>
>
>
>
> 
>
> Dana Orzel   NABCEP # 051112-136
>
> Cell - 208.721.7003 Email - d...@solarwork.com
>
> Great Solar Works, Idaho Incwww.solarwork.biz
>
> ID PV Contractor - # 028765 - ID PV Electrician # 028374
>
> "Responsible Technologies for Responsible People since 1988"
>
> Please consider the environment before printing this email.
>
>
>
>
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Generac Generators Industrial technician

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Re: [RE-wrenches] Raised racking system

[Chris Mason]

That's what we are looking at, but it's harder to design for this
application, if I didn't have to cost it, I would just go with it.
We use it for ground mount, and it is the strongest racking for tough
conditions. I think it is what we will end up with.


On Wed, Sep 19, 2018 at 3:20 PM, Chris Worcester 
wrote:

> You might consider the SnapNrack Series 200 ground mount system, we
> adapted it to work well on a raised roof mount before.
>
>
>
> Chris Worcester
>
> Solar Wind Works
>
> NABCEP Certified PV Installer
>
> Office 530-582-4503
>
> Cell 530-448-9692
>
> www.solarwindworks.com
>
> ch...@solarwindworks.com
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Chris Mason
> *Sent:* Wednesday, September 19, 2018 10:08 AM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] Raised racking system
>
>
>
> I'm quoting a job on a concrete roof with three foot parapet walls. I'd
> like to raise the arrays about 24 inches above the roof to minimize
> shading, does any one have a solution for this application?
>
>
>
> --
>
> Chris Mason
>
>
>
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Generac Generators Industrial technician

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[RE-wrenches] Raised racking system

[Chris Mason]

I'm quoting a job on a concrete roof with three foot parapet walls. I'd
like to raise the arrays about 24 inches above the roof to minimize
shading, does any one have a solution for this application?

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Re: [RE-wrenches] SMA Sunny Boy Display Window

[Chris Mason]

I now put HVAC foil tape over all windows to keep the sun off when I
install.

On Fri, May 11, 2018 at 4:00 PM, Ray <r...@solarray.com> wrote:

> I've also used some special 3M sanding pads that go up to 10,000 grit.
> They are used for polishing airplane wind shields.  Enough elbow grease,
> you can get any result you want.
>
> Ray Walters
> Remote Solar
> 303 505-8760
>
> On 5/11/18 1:48 PM, Jerry Shafer wrote:
>
> Wayne
> We use automotive grade polisher after a run with 1200 then 1800 the 2400
> wet sand paper, you must clean the surface before attempting to polish and
> then you need a powered cotton wheel, that works for us
> Jerry
>
> On Fri, May 11, 2018, 4:48 AM Wayne Irwin <pureenergyso...@hotmail.com>
> wrote:
>
>> We have installed quite a few SB's over the years and are seeing a
>> growing number of fogged over display lenses.
>>
>> We've tried headlight polish with limited success.
>>
>> Other than purchasing a new lid from SMA does anyone have another
>> solution to restoring or replacing the window?
>>
>>
>> Wayne Irwin,
>> President
>> License #CVC56695
>> State Licensed Solar Contractor
>> Pure Energy Solar International Inc.
>> wa...@pureenergysolar.com <pureenergyso...@hotmail.com>
>> http://PureEnergySolar.com
>> http://SolarChargingStation.net <https://solarchargingstation.net>
>> 352 377-6527 Office
>> 352 336-3299 Fax
>> 352 316-1637 Cell
>>
>> The Sun Is Always Shining!
>>
>> The content of this message is Pure Energy Solar Confidential. If you are
>> not the intended recipient and have received this message in error, any use
>> or distribution is prohibited. Please notify me immediately by reply e-mail
>> and delete this message from your computer system. Thank you.
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Re: [RE-wrenches] UPS no load draw

[Chris Mason]

It's 10KVA, what else do you need to know?

On Wed, Mar 7, 2018 at 2:26 PM, jay <jay.pe...@gmail.com> wrote:

> HI All,
>
> I’ve got someone asking me about powering a UPS model
>
> Liebert GXT4 UPS
>
> its a rack mounted unit.
>
> And I cannot find any power usage data on it.
>
> Would anyone maybe be able to hazard a guess or know a similar product
> that might have some numbers?
>
> And as I”m not familiar with this kind of product I just don’t have any
> ideas of power consumption.
>
> thanks
>
> jay
>
> peltz Power
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Solar Design Engineer
Generac Generators Industrial technician

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Re: [RE-wrenches] Li+ Systems Puerto Rico

[Chris Mason]

I live in a Caribbean Island and use off-grid solar with grid as backup
when available. We just went through Irma and lost power for three months.
I've lived these solutions.
I wouldn't use anything other than an Outback Radian for this with a DC
charge controller, but finding a good Lithium solution will take a little
work. We have 1100 Ah of Lead acid, but only use 20% of that. So 300Ah of
useable storage would have been adequate for Lithium and that's what we
will use later.
Relion looks promising.
Right now there is no good integrated Lithium solution.


On Mon, Feb 19, 2018 at 4:26 PM, Matt Partymiller <
m...@solar-energy-solutions.com> wrote:

> Ray,
>
> I think your biggest issue may be SolarEdge.  They told us the StorEdge
> unit would not start up without grid power.  We had an employee install
> one anyway on his tiny home.  He hooked it up to the grid initially to get
> it started (in back of shop where house was built).  He is not sure how
> sincere Solaredge's requirement is as he has turned off for periods since
> then and it still starts up.  We wish we had tried without the grid
> initially.  Let us know if that works should you go that route.
>
> Overall he enjoys the unit though he mentions his battery has shutdown a
> couple times when it has gotten below 15F (battery is on exterior as it is
> tiny home).  Probably not applicable for your installs.
>
> Matt
>
>
> On Mon, February 19, 2018 2:14 pm, Ray wrote:
> > Greetings Wrenches;
> >
> >
> > We are designing several systems for Puerto Rico, and while these will
> > eventually could be grid tied once the grid returns, they will need to
> > operate reliably in off grid mode possibly for a year or more.  What is
> > everyone's experiences with the Storedge and LG setup?  I've worked with
> > the regular Solaredge GT system and was quite impressed, but I've heard
> > the Storedge is not a good off grid option.  What are the issues, and has
> > anyone used the Storedge in longer term outages?
> >
> > Right now we are designing some smaller systems that will use Magnum
> > inverters with 24v and 48 v Li+ batteries from other manufacturers, like
> > Simpliphi and LiFe Blue. ( No GT, Backup only)  These are lower cost and
> > allow us to use more traditional off grid designs, but also have limited
> > charge and discharge current.  In order to make Li+ cost effective, we
> > have had to reduce the storage size in half compared to lead acid.  We
> > feel this is justifiable considering Li+'s ability to be discharged to
> > 100%, its voltage stability, and its higher efficiency.
> >
> >
> > All feed back is welcome, as we venture into less well charted
> > territory.  We just don't want to set up systems that are going to not be
> > functional in 5 to 8 years because of inferior AGM lead acid batteries.
> > We use HUP batteries for most larger off grid systems, but
> > these are not feasible because of their size and maintenance
> requirements.
> >
> >
> > Thanks,
> >
> >
> > Ray Walters
> >
> >
> > Remote Solar
> >
> >
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>
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> (877) 312-7456
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>
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Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
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Re: [RE-wrenches] Auger for ground mount

[Chris Mason]

I don't have that option, there isn't one available. I've been advised a
two person commercial grade gas driven auger will do it.

On Fri, Feb 9, 2018 at 11:56 PM, Darryl Thayer <darylsol...@gmail.com>
wrote:

> The last job I used a mini excavator with auger drive head and put in
> ground screws worked great only trouble was getting plumb,
>
> On Fri, Feb 9, 2018 at 11:13 AM, Chris Mason <cometenergysyst...@gmail.com
> > wrote:
>
>> They require you contact a certified installer. That's not happening here.
>>
>> On Fri, Feb 9, 2018 at 1:04 PM, Larry Brown <sunmount...@netstep.net>
>> wrote:
>>
>>> We have been using Techno Metal Posts Helical Piers with much success
>>> for many years
>>> Larry
>>>
>>> Larry Brown
>>> Sun Mountain
>>> 845-657-8096 <(845)%20657-8096>
>>> sunmount...@netstep.net
>>>
>>>
>>> Sent from my iPhone
>>>
>>> On Feb 9, 2018, at 11:48 AM, Chris Schaefer <ch...@solarandwindfx.com>
>>> wrote:
>>>
>>> While I've been using the Zilla platform with an auger attachment for a
>>> mini excavator with good luck. With that said I'm looking at Nuance Energy
>>> and their Osprey mount which requires a hammer drill. Anyone tried this yet?
>>>
>>> Christopher
>>>
>>> On Fri, Feb 9, 2018 at 11:35 AM, Jerry Shafer <jerrysgarag...@gmail.com>
>>> wrote:
>>>
>>>> Chris
>>>> Azk around for a fence contractor, they generally have what you need
>>>> Jerry
>>>>
>>>> On Feb 9, 2018 5:05 AM, "Chris Mason" <cometenergysyst...@gmail.com>
>>>> wrote:
>>>>
>>>>> I'm taking on construction of a ground mount system of about 30KW. My
>>>>> previous experience has entailed using a utility truck mounted auger for
>>>>> the holes but that's expensive. The soil type here is fairly soft, not
>>>>> rock.  There's no contractor available with a skid steer mounted auger. I
>>>>> need at least four inch holes, three foot deep. Siz inch would be better.
>>>>> What are the options? Any novel ideas?
>>>>> We have a service truck with a 2 ton hydraulic crane, anything I can
>>>>> mount to that? I don't mind fabricating brackets and mounts, welding parts
>>>>> to it.
>>>>>
>>>>> --
>>>>> Chris Mason
>>>>> NABCEP Certified Solar PV Installer™
>>>>> Solar Design Engineer
>>>>> Generac Generators Industrial technician
>>>>>
>>>>> www.cometsolar.com <http://www.cometenergysystems.com>
>>>>> 264.235.5670 <(264)%20235-5670>
>>>>> 869.662.5670 <(869)%20662-5670>
>>>>> Skype: netconcepts
>>>>>
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>>>>>
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>>>>>
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>>>
>>>
>>> --
>>>
>>> Chris Schaefer’s
>>> 
>>>
>>> *Tel/Fax 585-229-2083 <(585)%20229-2083> or Cell 585-748-1870
&g

Re: [RE-wrenches] Auger for ground mount

[Chris Mason]

They require you contact a certified installer. That's not happening here.

On Fri, Feb 9, 2018 at 1:04 PM, Larry Brown <sunmount...@netstep.net> wrote:

> We have been using Techno Metal Posts Helical Piers with much success for
> many years
> Larry
>
> Larry Brown
> Sun Mountain
> 845-657-8096 <(845)%20657-8096>
> sunmount...@netstep.net
>
>
> Sent from my iPhone
>
> On Feb 9, 2018, at 11:48 AM, Chris Schaefer <ch...@solarandwindfx.com>
> wrote:
>
> While I've been using the Zilla platform with an auger attachment for a
> mini excavator with good luck. With that said I'm looking at Nuance Energy
> and their Osprey mount which requires a hammer drill. Anyone tried this yet?
>
> Christopher
>
> On Fri, Feb 9, 2018 at 11:35 AM, Jerry Shafer <jerrysgarag...@gmail.com>
> wrote:
>
>> Chris
>> Azk around for a fence contractor, they generally have what you need
>> Jerry
>>
>> On Feb 9, 2018 5:05 AM, "Chris Mason" <cometenergysyst...@gmail.com>
>> wrote:
>>
>>> I'm taking on construction of a ground mount system of about 30KW. My
>>> previous experience has entailed using a utility truck mounted auger for
>>> the holes but that's expensive. The soil type here is fairly soft, not
>>> rock.  There's no contractor available with a skid steer mounted auger. I
>>> need at least four inch holes, three foot deep. Siz inch would be better.
>>> What are the options? Any novel ideas?
>>> We have a service truck with a 2 ton hydraulic crane, anything I can
>>> mount to that? I don't mind fabricating brackets and mounts, welding parts
>>> to it.
>>>
>>> --
>>> Chris Mason
>>> NABCEP Certified Solar PV Installer™
>>> Solar Design Engineer
>>> Generac Generators Industrial technician
>>>
>>> www.cometsolar.com <http://www.cometenergysystems.com>
>>> 264.235.5670 <(264)%20235-5670>
>>> 869.662.5670 <(869)%20662-5670>
>>> Skype: netconcepts
>>>
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>
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> --
>
> Chris Schaefer’s
> 
>
> *Tel/Fax 585-229-2083 <(585)%20229-2083> or Cell 585-748-1870
> <(585)%20748-1870> *
> *5115 South Hill Road ~ Canandaigua New York 14424**www.solarandwindfx.com
> <http://www.solarandwindfx.com> ~ E-mail: ch...@solarandwindfx.com
> <ch...@solarandwindfx.com>*
>
>
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Re: [RE-wrenches] Auger for ground mount

[Chris Mason]

I have a two man gas powered unit, not very confident of it.

On Feb 9, 2018 11:55, "James "Jibril" Gustafson" <djibrilf...@gmail.com>
wrote:

> Hi Chris,
>
> In the past I have had success with renting a skid steer with auger, or a
> mini excavator with auger.  With a little practice you can become
> proficient with the machines, the hardest pasrt is getting a plumb hole.
> The mini excavator is nice, with a thin digger bucket you can also do your
> trenching.  Is fun to learn how to operate these machines.
>
> Good Luck,
>
> Jibril
>
>
> On Fri, Feb 9, 2018 at 8:04 AM, Chris Mason <cometenergysyst...@gmail.com>
> wrote:
>
>> I'm taking on construction of a ground mount system of about 30KW. My
>> previous experience has entailed using a utility truck mounted auger for
>> the holes but that's expensive. The soil type here is fairly soft, not
>> rock.  There's no contractor available with a skid steer mounted auger. I
>> need at least four inch holes, three foot deep. Siz inch would be better.
>> What are the options? Any novel ideas?
>> We have a service truck with a 2 ton hydraulic crane, anything I can
>> mount to that? I don't mind fabricating brackets and mounts, welding parts
>> to it.
>>
>> --
>> Chris Mason
>> NABCEP Certified Solar PV Installer™
>> Solar Design Engineer
>> Generac Generators Industrial technician
>>
>> www.cometsolar.com <http://www.cometenergysystems.com>
>> 264.235.5670 <(264)%20235-5670>
>> 869.662.5670 <(869)%20662-5670>
>> Skype: netconcepts
>>
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[RE-wrenches] Auger for ground mount

[Chris Mason]

I'm taking on construction of a ground mount system of about 30KW. My
previous experience has entailed using a utility truck mounted auger for
the holes but that's expensive. The soil type here is fairly soft, not
rock.  There's no contractor available with a skid steer mounted auger. I
need at least four inch holes, three foot deep. Siz inch would be better.
What are the options? Any novel ideas?
We have a service truck with a 2 ton hydraulic crane, anything I can mount
to that? I don't mind fabricating brackets and mounts, welding parts to it.

-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
Skype: netconcepts
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Re: [RE-wrenches] Is there a charge controller do this?

[Chris Mason]

PWM chargers should work fine, dial the generators to about 50V. Then the
batteries will charge to 50V float, and the solar will manage the stages
after that. 4 x 60A PWM charger should do what you want. You can buy a 20A
and see how that works so you don't waste much money.

On Sun, Jan 28, 2018 at 11:23 PM, Mac Lewis <maclew...@gmail.com> wrote:

> Hello wrenches,
>
> I'm working on 3 off-grid telecom sites.  They are designed to operate
> solar only under most conditions but the project manager ordered a
> custom-built 48 VDC generators, intended to be used as the battery
> charger/backup power for the site.  These are ~20 kW generators, and can
> probably do about ~350Adc at 48 Vdc at the elevation that these are sited.
> The battery banks are 4 x 1000 Ahr GS Nanocarbon 48 battery strings and can
> gobble up the 350Adc easily when they are discharged.
>
> While discussing the generator operation with the generator supplier, we
> have found this generator isn't capable of charge control, or limiting its
> own output.  The charge control functionality isn't necessary at this site
> because we really just need it to keep things online until the sun returns,
> a simple 54 VDC float voltage would work.  However, without the generator
> being able to self-limit its output, we expect this generator to stall when
> started because it can't regulate its output current and will immediately
> become overloaded by the discharged batteries.
>
> I am trying to come up with some options to rectify this serious design
> issue.  One idea that immediately came to mind was putting in some parallel
> solar charge controllers between the DC generator output and the battery
> bank.  If the generator output could be dialed up to around 60-70 VDC,
> could parallel solar charge controllers be used for charge regulation?  It
> would be kind of like charging a 48 V battery bank from a 70 V battery
> bank.  MPPT isn't applicable, could the max current limit in the charge
> controller(s) be used to regulate charge rate?  Will the charge controllers
> blow up?  If not, what brand might work.  Each site has 8 x Midnite Classic
> 150s but I'm open to other manufacturers if it would work.  I am open to
> blowing up a charge controller in the shop but I thought it best to ask
> first.
>
> What are other ways to put this generator to use, and limit its load?
>
>
>
> Thanks for your input/comments
>
>
>
>
>
>
> --
>
>
>
> Mac Lewis
>
> *"Yo solo sé que no sé nada." -Sócrates*
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] has anyone ever had this happen?

[Chris Mason]

I've done this once because the client had duty free concessions, he had to
have the manufacturer's invoices. I quoted him Cost plus 20 for the
materials plus a labour fee and a management fee.
He took the quote and I never heard from him again, guess he tried to buy
the goods at the same cost.
One way around this is to explain that you have confidential pricing and
giving that to them would break that agreement.
On the other hand, I work with a large company that handled the shipping
and brokerage, so they had to get my supplier invoices. But, and this may
work for you, I first signed a Per-Watt contract with them, so what they
seen afterwards didn't make any difference.
You can always edit the invoices to make them higher.



On Tue, Jan 23, 2018 at 2:48 PM, jay <jay.pe...@gmail.com> wrote:

>
> HI All,
>
> I’ve had a large company want to do a project and they want me to invoice
> it as follows.  They said it had to do with knowing the cost of the system,
> but that doesn’t seem right to me. Now I don’t want to get screwed here,
> and it sure seems that could happen.
>
> I’m pretty sure I know what you all will say, but I feel like I needed to
> get a bit of a reality check.
> As I mostly do projects on a handshake, dealing with large companies isn’t
> too common for me.
>
>
> 1. give them wholesale pricing ( line item by item)
> 2. add margin, but small one is all they’ll accept
>
> Project is an off grid, no permits, in Mexico, remote site and pretty
> big:  16kw inverter, 9kw PV, etc.
>
> Thanks
>
> jay
>
> peltz power
>
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] 1,000V combiners

[Chris Mason]

The reason I need these inverters is we had two CL60 480V inverters with
bases, and they fell off the bases in the hurricane and filled with water.
They were good inverters but the bases were garbage and could not support
the inverters in high wind. Very disappointing as the arrays had only a
relatively small amount of damage.

I am planning on using the Symo 24 fused inputs directly, recabling to hard
wire the strings to the inverters. That's how we do all our European spec
systems, it's so much better to have all the strings present at the
inverter.

Thanks for your advice.

On Tue, Jan 23, 2018 at 11:40 AM, Connell Christopher <
connell.christop...@fronius.com> wrote:

> Hi Chris,
>
> Please note that US models on the Symo 24.0-3 come with integrated fusing
> on the terminal block, so what you are asking for may not be needed.
> SolarBos does make some rather nice pass thru combiners as well, the
> F6sk-1FF-4xp is the part number which we typically recommended. This is a
> “pass thru” version. There is a combiner version as well.
>
>
>
> Please note that the Fronius SnapInverter series (Galvo, Primo, Symo) are
> Nema4x, which have passed all required testing, including being sprayed
> with a hose with 65 GPM (Gallons per min) from a 1 inch nozzle from of 10
> feet for 5 minutes. Fronius International has investigated water ingress
> problems pertaining to our product. Statistics have shown that less than 1%
> of installations in the USA have experienced water ingress problems. The
> majority of these less than 1% of installations which experienced this,
> were found to be installation errors (over 90%). The problem is usually
> when there are multiple inverter installed on a site the same way, leading
> to multiple inverters with water ingress, (IE, Improper Torque on the
> datcom cover).
>
> If you have any questions, please contact me at technical support at
> 219-734-5500 <(219)%20734-5500>
>
> Thanks
>
> 
> -
>
> Chris Connell
>
>
>
> /  Team Leader
>
> /  Technical Support Dept.
>
> /  Fronius USA LLC
>
> /  6797 Fronius Drive  /  Portage, IN 46368/ USA
>
>
>
> /  Main: +1 (219) 734-5500 <(219)%20734-5500>
>
> /  Fax: +1 (219) 734-5502 <(219)%20734-5502>
>
> /  *connell.christop...@fronius.com <connell.christop...@fronius.com>*
> /  www.fronius.com
>
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] automatic transfer switch

[Chris Mason]

I think Radians are redundant anyway, if you parallel the output they will
keep going when one fails. Also, the 8KW are two x 4KW modules, both can
function independently. I know this because we lost one at home and kept
going until a replacement arrived.

On Thu, Jan 11, 2018 at 7:03 PM, jay <jay.pe...@gmail.com> wrote:

> HI all,
>
> I’m doing a project with 2 radians in a redundant configuration.
> Each one would go into a transfer switch to power the common load.
>
> I’m looking for a good, fast transfer switch.  30amp 120/240 is fine.
> And maybe a mechanical feature as well.
> Code isn’t an issue
> Will be off grid, remote mexico.
>
> There is the Iota of course, but was just looking for options.
>
> thx in advance,
>
> jay
>
> peltz power
>
>
>
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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[RE-wrenches] 1,000V combiners

[Chris Mason]

We are looking at Fronius Symo  24.0-3 480 for a 120KW rooftop project but
I am having problems identifying a 1,000V fused disco combiner for the six
strings. I'm looking for suggestions for suitable products.

-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician
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Re: [RE-wrenches] GENERAC EcoGen 6kw problem

[Chris Mason]

If the unit is still under warranty, have any Generac dealer run through
the diagnostics. The testing flow suggests rotor or stator problems, and
there is a proscribed testing flow that needs to be performed. If it is
determined to be a warranty issue, it will be fixed for you at no cost.
If it is not under warranty, I would still have a dealer look at it. There
are a large number of possible issues and you are going to spend a lot of
time trying to find the problem. A Generac tech will likely find the
problem in a few minutes unless it is a serious problem, in which case you
were never going to find it.
I'm a Generac tech so I can speak from some experience that this is likely
not a simple issue.

On Mon, Jan 8, 2018 at 8:13 PM, David Palumbo <palumbo1...@gmail.com> wrote:

> I am troubleshooting a 6kw EcoGen LP gas generator in my neighborhood that
> starts quickly
> • but immediately shuts down with an “Under Voltage” shutdown alarm
> • I can clear shutdown alarm and restart with same result. I tried this a
> few times with same result. One of the start attempts included a back fire
> before shutting down.
> • Generator was recently run successfully for a few hours during a cold
> snap. Started after several attempts at -10 F.
> • According to the EcoGen manual this Under Voltage alarm is triggered “If
> the generator voltage falls below 85% of nominal for more than 15
> seconds”.  This definitely isn’t happening as the generator starts as usual
> but shuts down within one or two seconds.
> I will check for fouled spark plugs tomorrow. Anything else that might be
> the problem?
>
> David Palumbo
> Independent Power LLC
> Hyde Park, VT
> 802-371-8678 voice or text
>
> Sent from Mail for Windows 10
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
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Generac Generators Industrial technician

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Re: [RE-wrenches] Off grid in Florida

[Chris Mason]

Essentially the client is paying the utility the minimum fee to be the
backup to the solar system, allowing the client to use a smaller battery
system, for the few days the battery system is not sufficient the grid
kicks in a covers it. That's a great deal, makes a lot of financial sense.
No need for a generator, AGS, fuel, huge battery systems. I think it's a
lusy deal for the utility, they get to be the backup but get little or no
revenue.

On Thu, Nov 2, 2017 at 10:29 AM, Steve Higgins <st...@surrette.com> wrote:

> I was just in Southern Florida this week... and I asked the Same question
> of a local installer.
>
> This is what I was told:
>
> It's considered by Florida Power and Light (FPL) that if you don't have
> grid is not a "safe living environment" and thus any new construction must
> have a grid connection.
>
> I asked about the homes that are currently off grid, and the he said that
> they are grandfathered, but when those homes get sold that they may have to
> pay to connect to the grid to attain a loan or insurance..
>
> Not an expert on Florida.. but this seems like a racket that FPL is
> running, and I wouldn't doubt that this spreads to other states, especially
> if they are government owned, or subsidized.
>
> However you can put in a system that uses a battery bank as backup or peak
> shave your electricity...
>
>
>
>
>
>
>
>
>
>
>
>
>
> <http://www.rollsbattery.com> <http://www.rollsbattery.com>
> <http://www.rollsbattery.com> <http://www.rollsbattery.com>
> <http://www.rollsbattery.com> <http://www.rollsbattery.com>
> <http://www.rollsbattery.com> <http://www.rollsbattery.com>
> <http://www.rollsbattery.com> <http://www.rollsbattery.com>
> <http://www.rollsbattery.com> <http://www.rollsbattery.com>
> <http://www.rollsbattery.com> <http://www.rollsbattery.com>
> <http://www.rollsbattery.com> <http://www.rollsbattery.com>
> <http://www.rollsbattery.com>
> Steve Higgins
> Technical Services Manager
> m +1.206.790.5840
> f +1.902.597.8447  *e* st...@surrette.com
> <#UNIQUE_ID_SafeHtmlFilter_> <http://www.facebook.com/RollsBattery>
> <http://www.facebook.com/RollsBattery> <http://www.twitter.com/
> RollsBattery>
> <https://www.youtube.com/user/RollsBattery>
> <https://www.linkedin.com/company/rolls-battery-engineering>
> <http://www.instagram.com/RollsBattery>
> <http://www.instagram.com/RollsBattery>
> <http://www.instagram.com/RollsBattery>
> --
> CONFIDENTIALITY: The information transmitted herein is intended only for
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>
> On Thu, Nov 2, 2017 at 2:35 AM, RE Ellison <reelli...@gmail.com> wrote:
>
> > Is there any truth to the info that you can not do an off grid system in
> > Florida ?
> >
> > I have a friend assembling parts and he was told you can’t do off grid in
> > the state
> >
> > Any info out there?
> > Thanks,
> > Bob Ellison
> >
> >
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps

[Chris Mason]

If you can get the Class rating of the motor, it will tell you a lot about
the start current requirements of the pump.

On Sun, Oct 29, 2017 at 4:29 AM, Darryl Thayer <darylsol...@gmail.com>
wrote:

> Hi, Dana, I know you have a different situation using a sewage ejector
> (grinder pump) but I have a customer that has a 1/2 HP well pump.  I do not
> know the drawdown, I think it is 60 feet.  It runs from an Outback VFX
> 3648, and a 4000 Watt autotransformer standard across the line starter.  It
> has never failed to start.  Nor does it "blink the lights", (running since
> 2004?) It runs at 350 to 400 watts into a 20-gallon diaphragm tank
> operating from 40 to 60 PSI.  Using Egauge on the 10 Minute scale, the peak
> seems to be about 3x the running load or 1200 to1500 Watts lasting less
> than 1 second.  In providing a family of two adults, the well pump is not a
> dominating load.  On the other hand, I had a customer with a 1.5 HP pump
> that I could not reliably start on a similar setup with a single FX 3548.
> The Radian is, of course, a much bigger animal.
>
> On Fri, Oct 27, 2017 at 3:45 PM, Dave Angelini Offgrid Solar <
> offgridso...@sti.net> wrote:
>
> > I am with Windy! Having 1/2 HP and up anywhere offgrid is a problem if it
> > does not soft start. It will cause dimmed LED's to flicker and just the
> > surges that really are avoidable. Use soft start! There is not a reason
> > these days to prove that a Radian or XW will start a motor that bangs the
> > inverter to start. The only case I make for large old pump tech like
> these
> > is if it is for a fire suppression pump, in addition to a nice 3/4 HP
> > Grundfos home water pump.
> >
> > Dave Angelini Offgrid Solar
> > "we go where powerlines don't"
> > http://members.sti.net/offgridsolar/
> > e-mail  offgridso...@sti.net
> > text 209 813 0060
> >
> >
> > > Really good to hear & thanks Chris.
> > > I just installed this system at our new home that we will be showing
> as a
> > > demonstration home. I come from the late '80s days of PV and a 1 HP
> pump
> > > was a major no-no back when.
> > > *Windy passed along a soft start suggestion & I was going to put a time
> > > clock turning on from 10AM-2PM every day to utilize a fuller bank. I
> will
> > > look at the SOC option on the Radian, but it is 200+' away from the
> > septic
> > > controller and conduit is in the ground.
> > > We have a HUP 2500 AHR/48-volt bank & 6,400 watt of PV tracked in a n-s
> > > canyon that limits the PV collection to 5 hours on a December day, that
> > so
> > > far even running a 3/4 HP air compressor all day/every day-7 days a
> week
> > > has never dropped at night more than 5%.
> > >
> > > 
> > 
> > > Dana Orzel   Great Solar Works, Inc.
> > > 208.721.7003   d...@solarwork.com
> > > Idaho Contractor - # 028765  Idaho PV # 028374
> > > NABCEP # 051112-136   www.solarwork.biz
> > > "Responsible Technologies for Responsible People since 1988"
> > > ï   Please consider the environment before printing this email.
> > >
> > >
> > > -Original Message-
> > > From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org]
> On
> > > Behalf Of Chris Mason
> > > Sent: Friday, October 27, 2017 5:51 AM
> > > To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
> > > Subject: Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps
> > >
> > > What's the problem with the 1H pump you anticipate? We live on a 8KW
> > > Radian and it's very robust. We have load management relay system to
> > > handle the dryer, it's only allowed to work above 95% state of charge.
> > > Since your lift station has range, i.e., it doesn't have to work every
> > > minute of the day, you can control it so it works only during a SOC
> range
> > > or Time of Day range. You can also turn off other loads so there is
> > enough
> > > power. If you run the lift pump during the night, there is less chance
> of
> > > a convection oven running at that time. Or mid morning when everyone is
> > at
> > > work. Having time control or SOC control is very handy.
> > >
> > > On Wed, Oct 25, 2017 at 9:37 PM, Dana <d...@solarwork.com> wrote:
> > >
> > >> Ok all you whiz kids, bozos, & bolos:
> > >>
> &

Re: [RE-wrenches] Wattage 1/2 HP vs 1HP septic pumps

[Chris Mason]

What's the problem with the 1H pump you anticipate? We live on a 8KW Radian
and it's very robust. We have load management relay system to handle the
dryer, it's only allowed to work above 95% state of charge. Since your lift
station has range, i.e., it doesn't have to work every minute of the day,
you can control it so it works only during a SOC range or Time of Day
range. You can also turn off other loads so there is enough power. If you
run the lift pump during the night, there is less chance of a convection
oven running at that time. Or mid morning when everyone is at work. Having
time control or SOC control is very handy.

On Wed, Oct 25, 2017 at 9:37 PM, Dana <d...@solarwork.com> wrote:

> Ok all you whiz kids, bozos, & bolos:
>
>
>
> If I have a septic lift pump [off grid ouch] at 1HP/240 vac/8-amps to meet
> all the usual state required overkill in septic design & a ½ HP/240
> vac/4.9-amp pump would do the same job but it will take 10% more time to
> dose 800 gallons.
>
> Powered by an 8 KW Outback Radian inverter.
>
> From a load point of view and a 240-volt 3 phase wild AC well pump limiting
> the overall surge and general wattage is the smartest move, but; Which pump
> will use less overall power? We are using 240 volt to utilize both
> inverters
> and drop the load on either half of the Radian inverter.
>
> Is there a smarter lift pump to use? ECM motor? Permanent magnet?
>
>
>
> 
> 
>
> Dana Orzel   Great Solar Works, Inc.
>
> 208.721.7003   d...@solarwork.com
>
> Idaho Contractor - # 028765  Idaho PV # 028374
>
> NABCEP # 051112-136   www.solarwork.biz
>
> "Responsible Technologies for Responsible People since 1988"
>
> P Please consider the environment before printing this email.
>
>
>
>
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
Skype: netconcepts
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Re: [RE-wrenches] Small genset 2 wire start?

[Chris Mason]

You can hack a Generac Ecogen to do it
http://www.outbackpower.com/forum/viewtopic.php?f=17=8382


On Thu, Oct 12, 2017 at 1:01 PM, <br...@willpowerelect.com> wrote:

>Does anyone know of an electric / 2 wire start propane generator 7kw or
>less?  I have a LOL (little old lady) customer off grid for years on a
>Trace 2512 and 6) T105s. We would like to give her auto start function
>and use her propane supply. I haven't found anything but aftermarket
>mods and would like to use factory equipment.
>
>Thanks
>
>Bruce Fiero
>
>E: [1]br...@willpowerelect.com
>
>W: [2]Willpower Electric, LLC
>
>Oregon Electrical Contractor C-681
>
>CCB 191852
>
>Energy Trust of Oregon Trade Ally
>
>Oregon Tax Credit Certified Technician Solar Electric
>
>NABCEP Certified PV Installer
>
> References
>
>Visible links
>1. mailto:br...@willpowerelect.com
>2. http://www.willpower-electric.com/
>
>Hidden links:
>4. mailto:br...@willpowerelect.com
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] Hurricane damage to solar arrays

[Chris Mason]

Most of mine survived Irma in Anguilla. The utility ground mount is totally
trashed. Our ground mount lost four modules.

On Sep 12, 2017 19:21, "Ray"  wrote:

We lost an array last year in Haiti to a Hurricane, but it all comes down
to mounting, racking, and debris flying into the array.   We determined our
rack which used the Schletter pipe clamps (pinch bolts) had pulled off the
mounting pipes.  We through bolted the clamps so they couldn't pull off
again, and went to triple rails.  I think racking in Miami done to
hurricane codes is probably not going to make the news.

Ray Walters

Remote Solar

On 9/12/17 1:34 PM, toddc...@finestplanet.com wrote:

http://edition.cnn.com/2017/09/11/americas/caribbean-
reacts-hurricane-irma/index.html



On Tuesday, September 12, 2017 12:09pm, "James Rudolph"
  said:

Aloha Everyone,
I was just wondering how all the PV arrays did during these storms?
Does Florida have higher pull out values and wind designs for their PV/H20
systems?
Is there any thing the rest of us could learn from all this?
Photos?
Mahalo Nui Loa,



*James B. Rudolph*

*Hawaii Unified*

*Director of Energy*

*ES Electrician # 10816*

*NABCEP Certified PV Installer # 091209-155*



*80*










Sent from Finest Planet WebMail.


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Re: [RE-wrenches] anything like Generac Smart Management Module for a solar critical backup panel

[Chris Mason]

Can you read the load from the inverter? On the Outback systems you can
read the API from the MATE3 via ethernet/JSON string.

On Tue, Aug 29, 2017 at 5:37 PM, Howard Arey <scot.a...@solarcentex.com>
wrote:

> Not SOC issue but rather a peak inverter output issue: 5,000 watts con and
> 6,600 surge for 10 seconds (I believe the latter is right number). That is
> the constraint I’m trying to live under.
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Chris Mason
> *Sent:* Tuesday, August 29, 2017 4:34 PM
> *To:* RE-wrenches <re-wrenches@lists.re-wrenches.org>
> *Subject:* Re: [RE-wrenches] anything like Generac Smart Management
> Module for a solar critical backup panel
>
>
>
> If there is an API from which you can determine SOC, you how to do load
> management with a Raspberry Pi. I can help with that if you want.
>
>
>
> On Tue, Aug 29, 2017 at 3:55 PM, Howard Arey <scot.a...@solarcentex.com>
> wrote:
>
> Hello again, wrenches.
>
>
>
> I know many of us have run into the quandary and that is  prioritizing
> loads in a critical load panel.
>
>
>
> About to put in some LG RESU units with the SE7600 StorEdge and the 21
> amps continuous is pretty tough.
>
>
>
> But with some smart, automated load management, this can work just fine.
>
>
>
> Is there anything like the Generac SMM (http://www.generac.com/all-
> products/transfer-switches/home-backup) out there that does not depend on
> decreasing cycles/hz to recognize its bumping into max load conditions?
>
>
>
> *Howard “Scot” Arey*
>
> 254-300-1228 <(254)%20300-1228>
>
> scot.a...@solarcentex.com
>
>
>
> [image: Solar Centex Logo - No Back.png 10 percent resize]
>
>
>
>
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> --
>
> Chris Mason
>
> NABCEP Certified Solar PV Installer™
>
> Solar Design Engineer
>
> Generac Generators Industrial technician
>
>
>
> www.cometsolar.com <http://www.cometenergysystems.com>
>
> 264.235.5670 <(264)%20235-5670>
>
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NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] anything like Generac Smart Management Module for a solar critical backup panel

[Chris Mason]

If there is an API from which you can determine SOC, you how to do load
management with a Raspberry Pi. I can help with that if you want.

On Tue, Aug 29, 2017 at 3:55 PM, Howard Arey <scot.a...@solarcentex.com>
wrote:

> Hello again, wrenches.
>
>
>
> I know many of us have run into the quandary and that is  prioritizing
> loads in a critical load panel.
>
>
>
> About to put in some LG RESU units with the SE7600 StorEdge and the 21
> amps continuous is pretty tough.
>
>
>
> But with some smart, automated load management, this can work just fine.
>
>
>
> Is there anything like the Generac SMM (http://www.generac.com/all-
> products/transfer-switches/home-backup) out there that does not depend on
> decreasing cycles/hz to recognize its bumping into max load conditions?
>
>
>
> *Howard “Scot” Arey*
>
> 254-300-1228 <(254)%20300-1228>
>
> scot.a...@solarcentex.com
>
>
>
> [image: Solar Centex Logo - No Back.png 10 percent resize]
>
>
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] Inverter Generators Yamaha and Honda

[Chris Mason]

I have a GP2200i here, fresh out of the box, I can connect to our Outback
and see if it likes it. I can also test on our VFX3648 to test that.


On Sun, Aug 13, 2017 at 8:50 PM, Dan Fink <danbo...@gmail.com> wrote:

> Except when the inverter generators don't play well with the inverter
> chargers.that has happened to me multiple times.
>
> Dan Fink
> Professor of Solar Energy Technology, Ecotech Institute
> IREC Certified Instructor™ for:
> ~ PV Installation Professional
> ~ Small Wind Installer
> Executive Director, Buckville Energy
> NABCEP Registered Continuing Education Providers™
> 970.672.4342
>
>
>
> On Sun, Aug 13, 2017 at 4:30 PM, Tom Lane <t...@ecs-solar.com> wrote:
>
>> I suggested you use a gasoline generator that the Inverter generators
>> that make D.C. Electricity and then convert it to pure perfect AC sinewave
>> at variable speeds have made simple AC generators obsolete, and the pure
>> sine wave is worth the difference for your appliances and the quietness and
>> fuel savings are great savings on peace and quite and money . GatorTom
>>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
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Re: [RE-wrenches] Inverter Generators Yamaha and Honda

[Chris Mason]

Also consider the Generac IQ2000 and GP2200i. There's a promotion on the
IQ2000 at the  moment. I'm a genera dealer but would not be competitive so
not trying to sell you anything.

On Sun, Aug 13, 2017 at 6:30 PM, Tom Lane <t...@ecs-solar.com> wrote:

> I suggested you use a gasoline generator that the Inverter generators that
> make D.C. Electricity and then convert it to pure perfect AC sinewave at
> variable speeds have made simple AC generators obsolete, and the pure sine
> wave is worth the difference for your appliances and the quietness and fuel
> savings are great savings on peace and quite and money . GatorTom
>
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Generac Generators Industrial technician

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Re: [RE-wrenches] SimpliPhi Power PHI3.4 Smart -Tech Batteries

[Chris Mason]

I had a situation with a Sonnon system where the controller missed it's
turn off point and discharged the batteries until there was not enough
voltage to keep the BMS running. I jury rigged two 300W panels in parallel
and charged the batteries directly until they turned on the BMS.

On Thu, Aug 10, 2017 at 2:06 PM, Starlight Solar Power Systems <
la...@starlightsolar.com> wrote:

> Jay,
>
> After LVD, with Relion, LiFeBlue and the new Elite PS ABC-CPU, the BMS
> will keep the battery off until you begin to charge. The battery will
> automatically come back online.
>
> Larry
>
>
> On Aug 10, 2017, at 7:43 AM, Jay <jay.pe...@gmail.com> wrote:
>
> Hi Dave,
>
> This is wonderful info.
> And it leads into the what happens when it reaches LVD?
> Given that it is using almost 10% per day of battery capacity for the BMS,
> what happens when the charging source for whatever reason shuts down. ( CC
> dies while people are gone for a few days for one example)
> The BMS turns off the loads, but what turns off the BMS and how do you
> turn it back on when it happens?
>
> Thx
>
> Jay
> Peltz power
>
>
>
> > On Aug 9, 2017, at 6:21 PM, Dave Angelini Offgrid Solar <
> offgridso...@sti.net> wrote:
> >
> > FYI, the LG Chem RESU10 consumes about 40 watts or less with the XW+ main
> > breaker off.
> >
> >
> >
> >> Hi Jay and Dave,
> >>
> >> LiFeBlue battery has a wireless Bluetooth monitor that is connected to
> the
> >> BMS in each battery. SoC, current, cycle life, voltage, health, battery
> >> faults and more is provided on the free IOS or Android App. Up to 62kWh
> at
> >> 48 volts available today.
> >>
> >> http://www.lifebluebattery.com/the-smartest-lithium-battery/index.html
> >>
> >> Larry
> >>
> >>
> >> On Aug 4, 2017, at 5:05 PM, Jay <jay.pe...@gmail.com> wrote:
> >>
> >> Yes true. I haven't found the perfect off grid lithium battery.  But
> until
> >> the prices come down, I become a better sales person, or I get rich
> >> clients not a big problem for me.
> >> You will have to use external % meter, but been doing that for long
> time.
> >>
> >> Sure good comm would be better, however one of the questions no one
> seems
> >> to have an answer for is energy consumption for the BMS, any BMS.
> >>
> >> On a different note, how does the LG or PW deal with dark start?  If it
> >> shuts down due to low voltage, how do you get it started again?
> >>
> >> Jay
> >>
> >>
> >>
> >>
> >>
> >>
> >>> On Aug 4, 2017, at 4:26 PM, Dave Angelini Offgrid Solar
> >>> <offgridso...@sti.net> wrote:
> >>>
> >>> Jay,
> >>>
> >>> Without battery BMS data for Soc how does one know? I assume you need
> an
> >>> external shunt and an energy monitor? Any guidance from the
> >>> manufacturer?
> >>>
> >>> One of the nice things about the LG resu 10 is the data is all there
> and
> >>> it stays very accurate even on a week with never finishing charge to
> >>> 100%.
> >>>
> >>>
> >>> Dave Angelini Offgrid Solar
> >>> "we go where powerlines don't"
> >>> http://members.sti.net/offgridsolar/
> >>> e-mail  offgridso...@sti.net
> >>> text 209 813 0060
> >>
> >> 
> >
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> Thank you,
>
> Larry Crutcher
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> (928) 342-9103
>
>
>
>
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Chris Mason
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Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
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Re: [RE-wrenches] SD card data processing

[Chris Mason]

I would run MySQL on my computer and write a python script to import the
data to MySQL, and use a front end package to graph the data - it's pretty
easy to do.
If that's more than you can handle, go to Guru.com and setup an account,
describe what yo uwant done, and there's plenty of willing takers that will
write the code to do it nicely.

On Mon, Aug 7, 2017 at 3:15 PM, Dan Fink <danbo...@gmail.com> wrote:

>
> Hi Mac -- yep, at about 50k data points Excel seizes up no matter how fast
> your computer. You really need to use a database program after that point.
> I had a friend arrange a web API into MySQL on our server and it works
> fine.
>
> Dan Fink
> Professor of Solar Energy Technology, Ecotech Institute
> IREC Certified Instructor™ for:
> ~ PV Installation Professional
> ~ Small Wind Installer
> Executive Director, Buckville Energy
> NABCEP Registered Continuing Education Providers™
> 970.672.4342
>
>
>
> On Mon, Aug 7, 2017 at 9:17 AM, Mac Lewis <maclew...@gmail.com> wrote:
>
>> Hi Wrenches,
>>
>> I am getting more and more zipped up SD card data emailed from clients
>> from their Outback Mate 3s, Sunny Islands and other systems that we have
>> out there.  The data can be very laborious to process and will crash Excel
>> most of the time because of the sheer quantity of data.  Also oftentimes,
>> you need to merge these data sets to get a true picture of how these power
>> systems are functioning.
>>
>> Do you have recommendations for 3rd party programs to help process and
>> analyse this data?  I am looking closely at WattPlot SunMate to use with
>> the Outback stuff.  Maybe there is a better way?  I'm interested in any
>> feedback about WattPlot products in general as well.
>>
>> Thanks in advance
>>
>> --
>>
>>
>>
>> Mac Lewis
>>
>> *"Yo solo sé que no sé nada." -Sócrates*
>>
>
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] SimpliPhi Power PHI3.4 Smart -Tech Batteries

[Chris Mason]

Have you tried them, are they reliable?

On Mon, Aug 7, 2017 at 1:05 PM, Starlight Solar Power Systems <
la...@starlightsolar.com> wrote:

> Hi Jay and Dave,
>
> LiFeBlue battery has a wireless Bluetooth monitor that is connected to the
> BMS in each battery. SoC, current, cycle life, voltage, health, battery
> faults and more is provided on the free IOS or Android App. Up to 62kWh at
> 48 volts available today.
>
> http://www.lifebluebattery.com/the-smartest-lithium-battery/index.html
>
> Larry
>
>
> On Aug 4, 2017, at 5:05 PM, Jay <jay.pe...@gmail.com> wrote:
>
> Yes true. I haven't found the perfect off grid lithium battery.  But until
> the prices come down, I become a better sales person, or I get rich clients
> not a big problem for me.
> You will have to use external % meter, but been doing that for long time.
>
> Sure good comm would be better, however one of the questions no one seems
> to have an answer for is energy consumption for the BMS, any BMS.
>
> On a different note, how does the LG or PW deal with dark start?  If it
> shuts down due to low voltage, how do you get it started again?
>
> Jay
>
>
>
>
>
>
> > On Aug 4, 2017, at 4:26 PM, Dave Angelini Offgrid Solar <
> offgridso...@sti.net> wrote:
> >
> > Jay,
> >
> > Without battery BMS data for Soc how does one know? I assume you need an
> > external shunt and an energy monitor? Any guidance from the manufacturer?
> >
> > One of the nice things about the LG resu 10 is the data is all there and
> > it stays very accurate even on a week with never finishing charge to
> > 100%.
> >
> >
> > Dave Angelini Offgrid Solar
> > "we go where powerlines don't"
> > http://members.sti.net/offgridsolar/
> > e-mail  offgridso...@sti.net
> > text 209 813 0060
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] Off Grid Refrigeration

[Chris Mason]

I've done a lot of 12V refrigeration work for boats, these systems are
small, efficient, cheap and basically unbreakable. they come in 24V so if
you can use the sizes, you can put something together very easily. the
Danfoss hermetically sealed compressors are bullet proof and very very
efficient. Let me know if you need more info.

On Tue, Jun 27, 2017 at 10:25 AM, Drake <
drake.chamber...@redwoodalliance.org> wrote:

> Hello Wrenches,
>
> What is your preferred refrigerator for off  grid installations? We are
> looking for a medium sized, commercially available unit that won't break
> the bank. Any suggestions would be appreciated.
>
> Thank you,
>
> Drake
>
>
> Drake Chamberlin
>
>
>
>
>
> *Athens Electric LLC OH License 44810 CO License 3773 NABCEP Certified
> Solar PV 740-448-7328 <(740)%20448-7328> *http://athens-electric.com/
>
>
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
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Re: [RE-wrenches] Generator choice for Sunny Island

[Chris Mason]

The outback system comes programmed to allow greater frequency variation on
the generator input.

On Sat, Jun 17, 2017 at 10:16 AM, Drake <
drake.chamber...@redwoodalliance.org> wrote:

> Also, very significantly, the SMA Sunny Boy / Sunny Island combos will
> taper charge when set up correctly.
>
> Drake
>
> At 09:53 AM 6/17/2017, you wrote:
>
> 
> August
>
> Have used both SMA and OutBack inverters for this application. One
> challenge with the smaller generators is getting a true 60 hertz, they
> fluctuate. The Sunny Boy can be programmed to operate at a lower hertz
> range if SMA will share the "secret code ". Recently did a Outback system
> and the customer had a Propane fired Briggs and Stratton gen set, two wire
> start, works great. I understand why you want to use the matching SMA's.
>
> Have fun
> peter
> - Original Message -
> From: August Goers <aug...@luminalt.com>
> To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
> Sent: Thursday, June 15, 2017 12:02 PM
> Subject: [RE-wrenches] Generator choice for Sunny Island
>
> Hi Wrenches, especially those of you who work on off-grid projects,
>
>
>
> We have an upcoming off-grid project where we will be powering a storage
> container with electronics in it. The loads are mostly 120 volt but there
> is a 240 volt heat pump that might occasionally run. We’re AC coupling
> the Sunny Island with a Sunny Boy PV inverter. So, we’ll be installing a
> Outback PSX-240 autoformer to bump the Sunny Island’s output from 120 to
> 240 volt.
>
>
>
> We need to select a generator for backup. We need a two-wire electric
> start (in order to be controlled by the Sunny Island) and preferably a
> generator that is okay just running 120 volt loads since the Sunny Islands
> input is only 120 volt. Something in the 3 kVA -7 kVA range should be fine.
>
>
>
> Does anyone have experience or ideas about what kind of two-wire start
> generator we might select?
>
>
>
> Thanks,
>
>
>
> August
>
> Luminalt
>
>
>
>
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
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869.662.5670
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Re: [RE-wrenches] Generator choice for Sunny Island

[Chris Mason]

To my limited mind, the whole 120V sunny island setup is a disaster. Why
not install a DC coupled 8KW Outback Radian and solve all your problems.
USe any 240V generator, although finding a 2 wire start gasoline unit may
be hard. I would use a Nexus controller generac propane generator with
propane tank, all mounted on the container. I would never design anything
to use gasoline, it's too dangerous.

On Fri, Jun 16, 2017 at 7:19 AM, Matthew Sirum <matthewsi...@gmail.com>
wrote:

> Greetings August,
>
> Great thoughts and comments from Brian!  I would also suggest speaking
> with the generator manufacturers' tech/engineering folks regarding the
> 120VAC configuration and to confirm 2-wire start set up once you have
> a brand and model or two in mind.  Generator parts and service
> availability in the region of the project may also drive brand
> selection.  If you need to maximize the inverter's battery charging
> capabilities (depending on battery system charging requirements) you
> may end up needing to look at generators in the 7.5 kW to 8.0 kW
> capacity range to allow for headroom in generator output loading.
>
> Also; I am curious how you arrived at an AC coupled design for this
> project.  I do not know any of the details or specific projects goals
> you are working with, but I would potentially consider a DC coupled
> system design...  DC/DC charge controller(s) would keep the battery
> system charged (and any DC loads operable) even if the Sunny Island
> and/or Sunny Boy(s) have a failure or is taken offline.  If most of
> the AC loads are 120VAC I would consider keeping the inverter AC
> output circuit 120VAC and install a dedicated transformer solely for
> the 240VAC load  Or perhaps consider a 120/240VAC inverter model.
> Depending on the overall situation a DC coupled system could be more
> resilient.  The dedicated transformer for the 240VAC load could also
> potentially help make the system more robust.  Also; I have spoken
> with a number of folks who have told me they wish the Sunny Island had
> more/better features for generator integration.  I'd like to hear more
> from those who have plenty of experience designing and installing
> systems with Sunny Islands and generators to learn what the current
> thoughts and issues are.
>
> I hope some of these thoughts may be helpful.
>
> Best regards,
>
> MATT
>
> Matthew Sirum
> P.O. Box 1227
> Greenfield, MA 01302-1227  USA
> phone: +1.413.773.0611
> email: matthewsi...@gmail.com
>
>
>   Original Message Below 
>
> [RE-wrenches] Generator choice for Sunny Island
> August Goers august at luminalt.com
> Thu Jun 15 09:02:41 PDT 2017
>
> Hi Wrenches, especially those of you who work on off-grid projects,
>
> We have an upcoming off-grid project where we will be powering a storage
> container with electronics in it. The loads are mostly 120 volt but there
> is a 240 volt heat pump that might occasionally run. We’re AC coupling the
> Sunny Island with a Sunny Boy PV inverter. So, we’ll be installing a
> Outback PSX-240 autoformer to bump the Sunny Island’s output from 120 to
> 240 volt.
>
> We need to select a generator for backup. We need a two-wire electric start
> (in order to be controlled by the Sunny Island) and preferably a generator
> that is okay just running 120 volt loads since the Sunny Islands input is
> only 120 volt. Something in the 3 kVA -7 kVA range should be fine.
>
> Does anyone have experience or ideas about what kind of two-wire start
> generator we might select?
>
> Thanks,
>
> August
>
> Luminalt
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NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] Generator choice for Sunny Island

[Chris Mason]

Sho you want diesel,  propane or natgas?
Nathan is more reliable as it does not require a refuel.


On Jun 15, 2017 12:02, "August Goers"  wrote:

> Hi Wrenches, especially those of you who work on off-grid projects,
>
>
>
> We have an upcoming off-grid project where we will be powering a storage
> container with electronics in it. The loads are mostly 120 volt but there
> is a 240 volt heat pump that might occasionally run. We’re AC coupling the
> Sunny Island with a Sunny Boy PV inverter. So, we’ll be installing a
> Outback PSX-240 autoformer to bump the Sunny Island’s output from 120 to
> 240 volt.
>
>
>
> We need to select a generator for backup. We need a two-wire electric
> start (in order to be controlled by the Sunny Island) and preferably a
> generator that is okay just running 120 volt loads since the Sunny Islands
> input is only 120 volt. Something in the 3 kVA -7 kVA range should be fine.
>
>
>
> Does anyone have experience or ideas about what kind of two-wire start
> generator we might select?
>
>
>
> Thanks,
>
>
>
> August
>
> Luminalt
>
>
>
>
>
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Re: [RE-wrenches] Sourcing 600 Volt CAT 5 cable

[Chris Mason]

Or you can sleeve it in innerduct.

On Fri, Apr 28, 2017 at 10:41 AM, Tump <t...@swnl.net> wrote:

> Midnite has this and can sell it to you directly if you wish.
>
> On Apr 28, 2017, at 7:36 AM, Dana <d...@solarwork.com> wrote:
>
> Thanks I will look into this option. This is my first go around with the
> rapid shut down & was going with the Midnite manual recommendation. So far
> sourcing this has not been easy.
>
> 
> 
> Dana Orzel   Great Solar Works, Inc.
> *208.721.7003 <(208)%20721-7003>   d...@solarwork.com
> <d...@solarwork.com>*
> Idaho Contractor - # 028765  Idaho PV # 028374
> NABCEP # 051112-136   www.solarwork.biz
> *"Responsible Technologies for Responsible People since 1988"  *
> *P* Please consider the environment before printing this email.
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org
> <re-wrenches-boun...@lists.re-wrenches.org>] *On Behalf Of *William Miller
> *Sent:* Thursday, April 27, 2017 9:20 PM
> *To:* RE-wrenches <re-wrenches@lists.re-wrenches.org>
> *Subject:* Re: [RE-wrenches] Sourcing 600 Volt CAT 5 cable
>
> Dana:
>
> The garden variety Cat5 we have been using is rated at 300 volts. Unless
> your off-grid system is using 600 volt controllers, standard Cat5 should be
> code compliant.
>
> We did source a Belden 600 V Cat5 and used it when we did not really need
> to. It was expensive and very hard to terminate.  (I damaged an Outback Hub
> 10. Expensive mistake).
>
> 600 volt Cat5 can be had, but I recommend you avoid using it if possible.
>
> William Miller
>
>
> On Apr 27, 2017, at 6:04 PM, Dana <d...@solarwork.com> wrote:
>
> Hey All’yall.
>
> I am looking for 185’ of 600 volt CAT 5 cable for my off grid MidNite
> Solar rapid shut down system.
> I am not looking for the USE version.
>
> Please contact me off list.
>
> Thankyou!
>
> 
> 
> Dana Orzel   Great Solar Works, Inc.
> *208.721.7003 <(208)%20721-7003>   d...@solarwork.com
> <d...@solarwork.com>*
> Idaho Contractor - # 028765  Idaho PV # 028374
> NABCEP # 051112-136   www.solarwork.biz
> *"Responsible Technologies for Responsible People since 1988"  *
> *P* Please consider the environment before printing this email.
>
>
>
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Re: [RE-wrenches] Tesla 2.0

[Chris Mason]

We installed the Sonnen system in Anguilla where the utility does not allow
export and charges for export power. The Sonnen was not designed to work in
that scenario, so we have had to design and implement a software and
hardware solution for that problem. Our controller takes SOC data from the
Sonnen and disconnects the inverter when the SOC is about 100%. We're still
tweaking it but it should solve the problem cheaply.

On Mon, Mar 13, 2017 at 12:16 PM, August Goers <aug...@luminalt.com> wrote:

> All –
>
>
>
> Yea, it’s amazing how much buzz Tesla was able to generate with their
> Powerwall without even having a product ready for sale. I’ve been keeping
> track of these next generation lithium-ion batteries so that we can keep up
> with the demand of all the tech savvy early adopters here in the Bay Area.
> It’s tough when there aren’t any products really ready for prime time!
>
>
>
> Tesla is only releasing an AC version of the PW2 with built in inverter.
> So, everything will be AC-coupled including to SolarEdge inverters. For
> backup, you must install a Tesla supplied “energy gateway” which basically
> looks like a 200 A automatic transfer switch used to isolate the backup
> panel (also referred to as the critical or protected loads panel) when the
> grid goes down. I haven’t actually seen an energy gateway spec sheet so I
> don’t know the specifics of how it works. Current transformer meters are
> required in the main panel and backup panel. There are spec sheets out
> there on the net with more information including simple single line
> diagrams of the setup. Dimensions are 45.3 in x 29.7 in. x 6.1 in. Various
> use scenarios should be possible including self consumption, non-export,
> and charge/discharge profile programming (arbitrage) but it will always be
> a balance between these types of use cases versus keeping it topped off for
> battery backup. I don’t have enough experience across a wide fleet of
> installations to know how we will balance these arbitrage profile
> programming modes versus always being ready for a power outage. In
> California we are also preparing for the Self Generation Incentive Program
> (SGIP) reopening and how to qualify for the Fed tax credit when paired with
> PV. There are a lot of constraints to work with!
>
>
>
> Our SolarEdge rep confirmed that they are focusing on pairing their
> StorEdge product with the LG RESSU10H li-ion battery coming out later this
> year. This will be DC coupled.
>
>
>
> The obvious benefits of these li-ion batteries are a) small size, b) cycle
> capacity, and c) ease of install. The high voltage output pioneered by the
> PW1 allows relatively small wires between the battery and inverter. This is
> a major benefit and is surely the future of where battery systems are
> going. Lead acid is tried and true, but has limited cycle capacity and the
> 48 volt limit will always make for a somewhat bulky and slow installation.
>
>
>
> August
>
>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Rebekah Hren
> *Sent:* Saturday, March 11, 2017 4:07 PM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] Tesla 2.0
>
>
>
> I have the same questions as Jay, I would really like to see the real
> specs for the Tesla 2.0.
>
>
>
> Other questions I have:
>
>
>
> -How will the Tesla 2.0 be installed in coordination with a PV system -  I
> can only assume any PV system would have to be AC coupled with the Tesla?
>
>
>
> -Does the Tesla inverter handle all grid-sell functionality and keep PV
> inverter online during outage?
>
>
>
> -How does this impact the SolarEdge Storedge system that was designed to
> work with the Gen 1 Tesla that didn't have an inverter? The Storedge
> factsheet does not match the new topology:  http://www.solaredge.com/
> sites/default/files/se_storedge_inverter_datasheet_na.pdf
>
>
>
> Thanks for any insight!
>
> Rebekah
>
>
>
> On Sat, Mar 11, 2017 at 9:51 AM, Chris Mason <cometenergysyst...@gmail.com>
> wrote:
>
> Don't ignore Sonnen, their ECO16 is a solid Lithium based solution. We
> installed one in Anguilla and, once we got through some software issues,
> the system performed solidly.
>
>
>
>
>
> On Fri, Mar 10, 2017 at 9:43 PM, jay <jay.pe...@gmail.com> wrote:
>
> HI All,
>
> I hesitate to bring this up, but I’ve had some questions come my way about
> the “new” Tesla 2.0
> battery backup units. And with the demise of Aquion, looks like Lithium
> and LA are pretty much the only games in town.
>
> I have been able to find quite little on line ( surprise), pretty much
> nothing from Tesla directly, but some from other fo

Re: [RE-wrenches] Tesla 2.0

[Chris Mason]

Don't ignore Sonnen, their ECO16 is a solid Lithium based solution. We
installed one in Anguilla and, once we got through some software issues,
the system performed solidly.


On Fri, Mar 10, 2017 at 9:43 PM, jay <jay.pe...@gmail.com> wrote:

> HI All,
>
> I hesitate to bring this up, but I’ve had some questions come my way about
> the “new” Tesla 2.0
> battery backup units. And with the demise of Aquion, looks like Lithium
> and LA are pretty much the only games in town.
>
> I have been able to find quite little on line ( surprise), pretty much
> nothing from Tesla directly, but some from other folks by google search.
>
> Does anyone on the list here know anything solid?
> For example.
> what inverter is being used?
> how do they stack?
> battery chemistry?
> actual size ( depending on which info it changes)
> are they actually shipping?
>
>
> Thanks
>
> jay
>
> peltz power
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
Skype: netconcepts
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Re: [RE-wrenches] Generac EcoGen 6

[Chris Mason]

Does it ruin for 20 mins then stop? Exercise.

On Dec 30, 2016 10:14, "Dave Palumbo"  wrote:

> Wrenches,
>
>
>
> I have a 6 kW Generac EcoGen (1,300 hrs on it) with a new problem.
>
> · After swapping in a new battery the other day  the generator
> now starts and runs when its start switch is positioned to Auto.
>
> · The OutBack inverter w Mate2 is not calling for an auto start.
>
> · Even when the EcoGen is disconnected from the off grid house it
> still starts and runs every time the start switch is set to Auto.
>
>
>
> How do I clear this problem and get this gen back to normal?
>
>
>
> Thanks and Happy New Year,
>
> Dave
>
>
>
> David Palumbo
>
> Independent Power LLC
>
> 462 Solar Way Drive
>
> Hyde Park, VT 05655
>
> 802-371-8678 <(802)%20371-8678> cell
>
> 802-888-4917 <(802)%20888-4917> home
>
>
>
>
>
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Re: [RE-wrenches] AC/DC in Same Trench?

[Chris Mason]

No problem with same trench, the requirements are that they are not in the
same raceway.

On Wed, Dec 28, 2016 at 1:37 PM, Corey Shalanski <co...@joule-energy.com>
wrote:

> For some upcoming utility-scale projects our design team is wondering
> about placing direct-bury AC and DC circuits in the same trench.
> - Firstly, is this even *Code*-permissible?
> - Secondly, are there any common sense reasons (induced voltage/signal
> interference/etc) for not doing this?
>
> Thanks,
> Corey Shalanski
> Joule Energy
> New Orleans, LA
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
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Re: [RE-wrenches] SB -40 Wi-Fi

[Chris Mason]

In the Caribbean, the SMA displays all turn yellow and become opaque. I use
the bluetooth feature for programming them.
I won't miss the useless displays.

On Thu, Dec 15, 2016 at 3:39 PM, William Miller <will...@millersolar.com>
wrote:

> Howie:
>
>
>
> I have not tried the Wi-Fi capabilities, so I cannot comment on that
> aspect.  What is relevant, however, is the news I received from a reliable
> source that the 40 series inverter will be the last residential inverter
> manufactured by SMA that will have an on-board display.  As evidence of
> this, look in the manual for a 40 series or even a 22 series inverter-
> there is no description at all of the display functions.  Odd and
> disappointing.
>
>
>
> SMA should have a representative on this list.  It may still be Steve
> Jefferson, who is a stand-up guy. SMA, what say you about these
> communications and display questions?
>
>
>
> Wrenches, if you think having an on-board display is important, voice your
> opinion.  If the Wi-Fi is problematic, this is not a good direction.  A lot
> of my clients are elderly and they are not as adept at computer or device
> based operations. A display is essential in my opinion.  SMA, please don’t
> kill the display.
>
>
>
> William Miller
>
>
>
>
>
> [image: Gradient Cap_mini]
> Lic 773985
> millersolar.com <http://www.millersolar.com/>
> 805-438-5600 <(805)%20438-5600>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Howie Michaelson
> *Sent:* Thursday, December 15, 2016 6:16 AM
> *To:* RE-wrenches <re-wrenches@lists.re-wrenches.org>
> *Subject:* [RE-wrenches] SB -40 Wifi
>
>
>
> I am looking for comments on the viability of the Wi-Fi option of the new
> SB -40 inverters. I noticed some concern here about the poor performance of
> this option and am trying to decide whether to use it in the case of a long
> distance between the inverters and the router.
>
> I can place a repeater between the inverters and as well as purchase the
> external antenna option from SMA for the inverters, but would like to have
> an idea ahead of buying and installing the 2 antennas if this is likely to
> work. I do have the option of running an Ethernet cable, but it is a long
> (500' +) and difficult pull. Any comments or suggestions would be
> appreciated.
>
> Thanks,
>
> Howie
> Howie Michaelson
> NABCEP Certified Solar PV Installer™
>
> Sun Catcher
> Renewable Energy Systems Sales and Service
> VT Solar Electric Incentive Partner
> 802-272-0004 <(802)%20272-0004>
>
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Re: [RE-wrenches] Milwaukee M18 one key tools

[Chris Mason]

ould be super expensive)and
> I'm not sure I like the idea of adding complicated electronics to a really
> simple, reliable tool.
>
>
> Dan Fink
>
> Adjunct Professor of Solar Energy Technology, Ecotech Institute
>
> IREC Certified Instructor™ for:
>
> ~ PV Installation Professional
>
> ~ Small Wind Installer
>
> Executive Director, Buckville Energy
>
> NABCEP Registered Continuing Education Providers™
> 970.672.4342
>
>
>
>
>
>
> On Sun, Nov 27, 2016 at 8:17 AM, William Dorsett <wmdors...@sbcglobal.net>
> wrote:
>
> Pardon my ignorance but what would be the purpose of a smart phone app for
> a cordless drill? It’s not like we’d be using it hands-free anyway. You can
> imagine being up on a ladder,  drilling with one hand and adjusting at the
> same time with the smart phone? Sounds like a bad mismatch.
>
>
>
> Bill Dorsett
>
> Manhattan, KS
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Christopher Warfel
> *Sent:* Saturday, November 26, 2016 10:12 AM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] Milwaukee M18 one key tools
>
>
>
> Don't tell me this, I just bought Dewalt tools. ahhh
>
>
>
> On 11/22/2016 11:21 AM, Kirk Herander wrote:
>
> Hello,
>
> Anyone out there invested in these tools yet? Looks interesting. Amongst
> other things, you can custom program the cordless drill to various speeds
> and torques using a smart phone app.
>
>
>
> *Kirk Herander*
>
> *Owner|Principal, VT Solar, LLC *
>
> *Celebrating our 25th Anniversary 1991-2016*
>
> *www.vermontsolarnow.com <http://www.vermontsolarnow.com>*
>
> dba Vermont Solar Engineering
>
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>
> VT RE Incentive Program Partner
>
> 802.863.1202
>
>
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Re: [RE-wrenches] Fwd: RE: Grid neutral

[Chris Mason]

Power stations use ground return. when we constructed power stations in my
electrical years, we dug extensive trenches filled with copper conductors
to provide the widest earthing system.
In a three phase system,  only the differential current returns to the
power station. That means that there is little current going back.
However, the neutral you see on the pole does not go back to the power
station, it returns to the transformer.


On Nov 27, 2016 22:40, "Allan Sindelar"  wrote:

> Mark and all,
> Thank you for some very useful replies. You confirmed my understanding.
> You know how a customer can be so sure of (usually) himself...
>
> Mark, I don't care that much about the structure of the utility. But it's
> this customer's understanding of utility structure that got me the
> consulting job for a system that would allow him to disconnect from it.
> Allan
>
> *Allan Sindelar*
> al...@sindelarsolar.com
> NABCEP Certified PV Installation Professional
> NABCEP Certified Technical Sales Professional
> New Mexico EE98J Journeyman Electrician
> Founder (Retired), Positive Energy, Inc.
> *505 780-2738 <505%20780-2738> cell*
>
>
> On 11/26/2016 8:32 AM, Mark Frye wrote:
>
> Allen,
>
> Back when people used to read books to learn, at least you had to spend
> several hours studying something, then you could be 50% an expert. Now with
> the interwebs, watch only at least the first 20 minutes of a YouTube video
> and you can have an unshakeable conviction in a new belief as truth.
>
> If you are off grid, what do yo care about the structure of the utility
> anyway. None of use use "grid" power directly, but always through some form
> of power transformation.
> Mark
>
>
> On 11/25/2016 5:27 PM, Allan Sindelar wrote:
>
> Wrenches,
> Is there such a thing as a "grid neutral"? I have been providing design
> support to a client for a large off grid system; a prepper, rare in these
> parts. He claims that utility current is carried in part through the ground
> and in part through a neutral conductor, and such a "utility neutral" is
> deliberately undersized. At first I pushed back (see below). Now I just
> wonder what Wrenches more knowledgeable than I am will say.
> Thank you,
> Allan
>
> *Allan Sindelar*
> al...@sindelarsolar.com
> NABCEP Certified PV Installation Professional
> NABCEP Certified Technical Sales Professional
> New Mexico EE98J Journeyman Electrician
> Founder (Retired), Positive Energy, Inc.
> *505 780-2738 <505%20780-2738> cell*
>
>
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Re: [RE-wrenches] SMA Arc-Fault

[Chris Mason]

rc faults are still happening.
>> -Arc faults are not always on the same day/time of the week.
>>
>> I am wondering if this can be caused by the generator?Â
>> Has anyone run into a situation like this or something similar?
>>
>> Thanks for your help,
>> Dave
>>
>> --
>>
>> Dave Tedeyan
>> Project Engineer
>>
>> Taitem Engineering, PC
>> 109Â S. Albany Street, Ithaca, NY 14850
>> Voice:Â (607) 277-1118 x121 
>>
>> www.taitem.com
>>
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-- 
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Re: [RE-wrenches] TIny House Pump

[Chris Mason]

Boats have small pressure switched potable water pumps running on DC. The
pumps from manufacturers like Jabsco last for a long time and can be
rebuilt.

https://www.amazon.com/Jabsco-31620-0092-Marine-Pressure-Outlets/dp/B000O8B4CG/ref=sr_1_10?s=boating-water-sports=UTF8=1477760477=1-10

On Fri, Oct 28, 2016 at 3:13 PM, Ray Walters <r...@solarray.com> wrote:

> Greetings Esteemed Wrenches:
>
> We have a tiny house project, and need to supply the pressure pump. My go
> to pump has been the Grundfos MQ series of constant pressure pumps.  They
> have no start up surge, and don't require an external pressure switch or
> pressure tank.  For small part time cabins, we've used the Shurflo or
> Aquatec diapraghm pumps.
> In this case, I fee that the Grundfos is overkill at 10 GPM, and that the
> RV pumps won't last very long in full time use.  Any other choices out
> there I should be looking at?
> I'm thinking 3 GPM max will be fine, but I would like something more
> reliable.  The pump would be preferred to be 120 vac, but I might consider
> a 24 vdc unit if it otherwise fits the bill.
>
> As always, thanks in advance for all your comments and suggestions.
>
> --
> R.Ray Walters
> CTO, Solarray, Inc
> Nabcep Certified PV Installer,
> Licensed Master Electrician
> Solar Design Engineer
> 303 505-8760
>
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Re: [RE-wrenches] Vertical wall, shared rails

[Chris Mason]

I use a laser plumb, sit it on the ground over your marks and loft the
marks to the top. It will be very accurate.

On Mon, Oct 17, 2016 at 7:49 PM, Benn Kilburn <b...@skyfireenergy.com>
wrote:

> Hello Wrenches,
> Wondering if any of you have ever done anything similar to installing on a
> vertical wall using a horizontal shared rail racking system, array being
> about 32.8m (110') wide and 26.3m (86') tall
>
> The rails obviously have to be exactly perpendicular the entire length so
> we are taking extra care that the first row (top row) is true and using
> template spacers for each row down.  Only problem is that the top of the
> building is a concrete parapet and anything but level.
>
> Wondering if anyone has any good tips for getting that top row
> level/square and  keeping the rest of the rails perfectly perpendicular?
> (keeping in mind the length...32.8m (110')
>
> Much Thanks,
>
> *Benn Kilburn *
> CSA Certified Solar Photovoltaic Systems Electrician, SkyFire Energy Inc
> 14515 – 121A Ave NW | Edmonton, AB | T5L 2T2
> P: 780-474-8992 | F: 888-405-5843 | www.skyfireenergy.com
> [image: email] <b...@skyfireenergy.com> [image: facebook]
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> <https://www.linkedin.com/company/283735?trk=tyah=tarId%3A1408655033432%2Ctas%3Askyfire%2Cidx%3A2-2-5>
>
>
> [image: SkyFire Energy Logo_horizontal]
>
> *WE HAVE MOVED! Please note our new address above.*
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[RE-wrenches] Lithium battery systems

[Chris Mason]

I'm curious to see if anyone is finding Lithium battery systems available
that will be suitable for an Outback Radian based system. Let me know what
is out there please.

-- 
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NABCEP Certified Solar PV Installer™
Solar Design Engineer
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Re: [RE-wrenches] Strategies for hurricane resistant solar arrays?

[Chris Mason]

All our installations are in the Caribbean. The glass blow out (or suck out
which is more likely) doesn't surprise me, that is the design limitation.
It doesn't matter how tough the rail is if the modules blow out.
Tilt installations are bad for hurricane zones. I keep out flat roof
installations to a lower tilt than is recommended for this reason. I also
favour parapets around the roof to protect them, so if you have some blocks
and masons around, let them add two rows of blocks to the roof line.
I suspect smaller modules are stronger, so 180W modules would be better
than 300W.
CanadianSolar have a line of 300~W modules with a bar across the back, but
it will only help with blow not suck as it is not attached to the backing.
I've looked at fitting a crossbar into the frame attached to the backing
with 5200 or similar, but the question is, how are you going to test, you
have killed the warranty, and is it worth it?
This is a tough place to install solar.

On Thu, Oct 13, 2016 at 6:20 PM, Darren Anderson <dar...@self.org> wrote:

> In light of Hurricane Matthew and the loss of some of our PV systems on
> South Coast of Haiti (despite being designed for 120 - 150mph winds), I’d
> be interested to hear of any strategies being used for making
> hurricane-resistant solar arrays. The maximum wind speed that most
> commercially available racking systems seem to provide is 130 – 150mph, but
> in many cases it seems the racking survives okay anyway while the glass is
> blown right out of the module frames.
>
> Are there any modules rated for higher than 2400 Pascals of wind loading
> (which seems to be the norm)? I recall seeing a Mitsubishi module a few
> years back that had an additional frame member running across the back of
> the module. Would that provide extra wind load protection?
>
> Would using small solar modules with less surface area be a useful
> strategy? (We typically use standard 60-cell modules.)
>
> Can some sort of wind break or shield be designed into the frame to take
> the wind load off the solar modules themselves? (Many of our systems are on
> tilt-frames on flat concrete roofs so that back of the array is exposed.)
>
> Any thoughts/advice/experience in this area would be much appreciated.
> Thanks.
> ___
>
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>
> *Solar Electric Light Fund *| www.SELF.org
>
> mobile:+1-778-887-8291
>
> head office:   +1-202-234-7265
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

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Re: [RE-wrenches] GSLC work-arounds

[Chris Mason]

I forwarded your page to the Outback engineering team responsible for the
Radian, hopefully your detailed analysis will give them some food for
thought. I tend to agree with you, I would always use an external AC panel.

On Tue, Oct 11, 2016 at 5:07 PM, William Miller <will...@millersolar.com>
wrote:

> Friends:
>
>
>
> We resolved our web authoring problem and threw together a little page to
> illustrate some of the issues we have with the GSLC.  If anyone is
> interested, direct your browser to:
>
>
>
> http://www.millersolar.com/MillerSolar/case_studies/GSLC/GSLC.html
>
>
>
> I hope the time and effort I put into these web pages is helpful to
> someone out there.  I always try to give back to the industry by sharing
> some of my trade secrets.
>
>
>
> Sincerely,
>
>
>
> William
>
>
>
>
>
> [image: Gradient Cap_mini]
> Lic 773985
> millersolar.com <http://www.millersolar.com/>
> 805-438-5600
>
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com <http://www.cometenergysystems.com>
264.235.5670
869.662.5670
Skype: netconcepts
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