Re: [RE-wrenches] solar inter row shading

[Ray]

Here's a cool row spacing sheet that the Wrenches' own William Miller 
provided us a few years back. He might have a newer version, but this 
should do what you need, I think.


Ray Walters
Remote Solar
303 505-8760

On 7/26/19 6:03 PM, Chris Mason wrote:

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
www.cometsolar.com 

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Interrow_spacing.xls
Description: MS-Excel spreadsheet
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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
www.cometsolar.com 
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Re: [RE-wrenches] Generac Warranty claim ECOGEN 15k

[Dana]

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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Re: [RE-wrenches] Enphase and Tesla Powerwall

[Marco Mangelsdorf]

There are, and always will be, observations to be made about that company
and its founders.

The reality of the Powerwall (along with the accompanying Gateway) is that
it's without a doubt a cutting edge product and has NO peer at present in
terms of what it provides to the homeowner.

Not only am I a Tesla certified installer, I also installed one on my
legacy NEM system at home two years ago and it has worked flawlessly.  (And
that doesn't even include the coolness factor of the app.)

And lest anyone among this esteemed Wrenches group believe that I'm some
shill for Tesla, I've been in the solar field for 41 years and do not tend
to hyperbole or BS.

marco

On Thursday, July 25, 2019, Mark Frye  wrote:

> Uh, Looking at what is happening with Tesla's share price, I am not sure I
> would want to be "investing" in the products of the neglected solar
> division. With Elon alone at the wheel , the Powerwall et. al. might go the
> way of the Dodo before too long.
>
> I have been working lately with folks who have moved on from the vestiges
> of SolarCity. They don't seem to be very impressed with what is happening
> there, at  least not enough to stick around while the division molders
> under the jaundice eye of the visionaries.
>
>
> On 7/25/2019 11:49 AM, August Goers wrote:
>
> No, we haven't done any zero export. I guess both the Powerwall and
> Enphase systems would need to be independently programmed for zero export?
> I should add a caveat - all of our IQ7 systems have been the SunPower
> branded Equinox type, not Enphase. The main difference being that Enphase
> would use their envoy box and SunPower uses the PV Supervisor 6.
>
> August
>
>
>
>
> On Thu, Jul 25, 2019 at 10:53 AM Marco Mangelsdorf 
> wrote:
>
>> Sounds encouraging, August. Mahalo.
>>
>> Are any of those systems zero export by any chance?
>>
>> marco
>>
>> On Thursday, July 25, 2019, August Goers  wrote:
>>
>>> Hi Marco - We have dozens of systems with this combo, so far no problem.
>>> Tesla's AC coupling mechanism in general seems to be very robust - we've
>>> paired them with many inverter types and brands, and they always seem to
>>> couple up during our grid-off tests. Since the vast majority of our systems
>>> are grid tied, the real test will be how they will work over the long haul
>>> if we have major grid outages - who knows if and when that might happen.
>>> I've been in PG territory in the Bay Area for about 15 years and can only
>>> recall one or two short (less than one hour) power outages.
>>>
>>>
>>> August
>>>
>>>
>>>
>>>
>>> On Thu, Jul 25, 2019 at 7:58 AM Marco Mangelsdorf 
>>> wrote:
>>>
 Aloha,

 I’m thinking about combining the Enphase IQ 7 micros with a Tesla
 Powerwall or two.

 Anyone out there try this?  With bueno or not so bueno results?

 Mahalo,
 marco
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Re: [RE-wrenches] Soft Start Modules for Well and Sewage Pumps?

[Jeff Clearwater]

Hey Jerry,

I think the issue is capacitor start motors can't handle VFDs.  but 
there are other approaches to soft start - still learning.  Thanks for 
the reference!


Best,

Jeff

Jerry Shafer wrote on 7/26/19 12:59 PM:


Wrenches
I have quite a few freq drives on single phase, the controller came 
from ABB, the pic attached is reference only, it was for a AC chiller 
grid connected not off grid but the controller works either way

Jerry

On Fri, Jul 26, 2019, 12:47 PM Jeff Clearwater 
mailto:je...@villagepowerdesign.com>> 
wrote:


Thanks Chris!

Unfortunately I'm finding that unless you build an integrated
control - motor combo that can soft start like Franklin did - the
majority of single phase motors can't use soft start.  That is
probably a 3-phase motor in that pump that they have an inverter
for in the controls - or they used a shaded pole or spit capacitor
single phase motor which can use soft start - at least that is
what my initial research and phone call to the pump control
company has thus far revealed.

Apparently you can play with the voltage-amperage tradeoffs when
you have the 3 magnetic fields interaction - single phase doesn't
allow you much room to wiggle.

I do see single phase soft-starts on the market - still
researching but that's my initial findings.

Anyone know differently?

Thanks!

Jeff



ch...@oasismontana.com  wrote on
7/26/19 9:27 AM:


Here at the Oasis home/office, we have a Goulds 3 hp 240VAC soft
start pump (#18GS30, w/ Franklin motor HS09970 and #3AS30 Aquavar
Solo controller); it’s been running off of my 2011 Radian GS8048
since 2016, when I had to drill a new well (the water table is
dropping) and pump from about 300 ft. depth.I have 3500 ft. of
drip irrigation, a big garden and the usual domestic water
loads.It’s worked flawlessly since its inception, and I cannot
speak more highly of Goulds pumps.My first one lasted 23 years
(it was a 1.5HP model).

Best,

Chris Daum

Oasis Montana Inc.

406-777-4309 or 4321

406-777-4309 fax

www.oasismontana.com 

*From:*RE-wrenches 
 *On Behalf Of
*Dana
*Sent:* Friday, July 26, 2019 9:34 AM
*To:* 'Jeff Clearwater' 
; 'RE-wrenches'


*Subject:* Re: [RE-wrenches] Soft Start Modules for Well and
Sewage Pumps?

Yes I have used soft starts offgrid with SW & VFX for 15+ years,
in spite of doing load evaluations & others installing what ever
they normally used. It has been a great rescue device. Well pump,
2 dish washers, booster pump, etc.

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" _

*P*Please consider the environment before printing this email.

*From:*RE-wrenches mailto:re-wrenches-boun...@lists.re-wrenches.org>> *On Behalf Of
*Jeff Clearwater
*Sent:* Friday, July 26, 2019 8:04 AM
*To:* RE-wrenches mailto:re-wrenches@lists.re-wrenches.org>>
*Subject:* [RE-wrenches] Soft Start Modules for Well and Sewage
Pumps?

Hey Wrenches,

Anyone have success using soft-start modules on well and sewage
pumps to lower the surge for off-grid inverters?

The baby we are trying to tame is a 2 HP 15 amp, 53 LRA Omnivore
Grinder Pump - LSG200 series - single phase 230 Vac.

Thanks!

Jeff


~~~

Jeff Clearwater
Village Power Design
linkedin 
www.villagepowerdesign.com 
cell - 413-559-9763
~~~


Jeff Clearwater wrote on 7/26/19 6:32 AM:

*Thanks Ray and Jerry,

Great to hear from you both with your years of combined
experience :)*

*So yes looking at the 5 sec has me switching back to a
trusty Radian - _even then from what you are saying it may
not work._*

And you are right Ray -  Outback is careful to rate the
"overload capability" in KVA rather than KW due most likely
to voltage sag of course.

*So this 53 LRA 2 HP motor - if I can only trust the 5 second
(50 A) might not start - especially with other loads on the
system?*

*RADIAN SURGE RATINGS:*

*Maximum Output Current*
1 ms peak 100 Amps AC at 240 VAC, 200 Amps AC at 120 VAC
100 ms RMS 70.7 Amps AC at 240 VAC

*Overload Capability*
100 ms surge 16.97 kVa
5 seconds 12 kVa

Re: [RE-wrenches] Soft Start Modules for Well and Sewage Pumps?

[Jeff Clearwater]

Thanks Chris!

Unfortunately I'm finding that unless you build an integrated control - 
motor combo that can soft start like Franklin did - the majority of 
single phase motors can't use soft start.  That is probably a 3-phase 
motor in that pump that they have an inverter for in the controls - or 
they used a shaded pole or spit capacitor single phase motor which can 
use soft start - at least that is what my initial research and phone 
call to the pump control company has thus far revealed.


Apparently you can play with the voltage-amperage tradeoffs when you 
have the 3 magnetic fields interaction - single phase doesn't allow you 
much room to wiggle.


I do see single phase soft-starts on the market - still researching but 
that's my initial findings.


Anyone know differently?

Thanks!

Jeff



ch...@oasismontana.com wrote on 7/26/19 9:27 AM:

Here at the Oasis home/office, we have a Goulds 3 hp 240VAC soft start 
pump (#18GS30, w/ Franklin motor HS09970 and #3AS30 Aquavar Solo 
controller); it’s been running off of my 2011 Radian GS8048 since 
2016, when I had to drill a new well (the water table is dropping) and 
pump from about 300 ft. depth.I have 3500 ft. of drip irrigation, a 
big garden and the usual domestic water loads.It’s worked flawlessly 
since its inception, and I cannot speak more highly of Goulds pumps.My 
first one lasted 23 years (it was a 1.5HP model).


Best,

Chris Daum

Oasis Montana Inc.

406-777-4309 or 4321

406-777-4309 fax

www.oasismontana.com 

*From:*RE-wrenches  *On 
Behalf Of *Dana

*Sent:* Friday, July 26, 2019 9:34 AM
*To:* 'Jeff Clearwater' ; 'RE-wrenches' 


*Subject:* Re: [RE-wrenches] Soft Start Modules for Well and Sewage Pumps?

Yes I have used soft starts offgrid with SW & VFX for 15+ years, in 
spite of doing load evaluations & others installing what ever they 
normally used. It has been a great rescue device. Well pump, 2 dish 
washers, booster pump, etc.


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" _

*P*Please consider the environment before printing this email.

*From:*RE-wrenches > *On Behalf Of 
*Jeff Clearwater

*Sent:* Friday, July 26, 2019 8:04 AM
*To:* RE-wrenches >

*Subject:* [RE-wrenches] Soft Start Modules for Well and Sewage Pumps?

Hey Wrenches,

Anyone have success using soft-start modules on well and sewage pumps 
to lower the surge for off-grid inverters?


The baby we are trying to tame is a 2 HP 15 amp, 53 LRA Omnivore 
Grinder Pump - LSG200 series - single phase 230 Vac.


Thanks!

Jeff


~~~

Jeff Clearwater
Village Power Design
linkedin 
www.villagepowerdesign.com 
cell - 413-559-9763
~~~


Jeff Clearwater wrote on 7/26/19 6:32 AM:

*Thanks Ray and Jerry,

Great to hear from you both with your years of combined experience :)*

*So yes looking at the 5 sec has me switching back to a trusty
Radian - _even then from what you are saying it may not work._*

And you are right Ray -  Outback is careful to rate the "overload
capability" in KVA rather than KW due most likely to voltage sag
of course.

*So this 53 LRA 2 HP motor - if I can only trust the 5 second (50
A) might not start - especially with other loads on the system?*

*RADIAN SURGE RATINGS:*

*Maximum Output Current*
1 ms peak 100 Amps AC at 240 VAC, 200 Amps AC at 120 VAC
100 ms RMS 70.7 Amps AC at 240 VAC

*Overload Capability*
100 ms surge 16.97 kVa
5 seconds 12 kVa
30 minute 9 kVa

*Other's experience with 2 HP sewage pump or well pump motors on a
Radian?

Thanks!

Jeff*


Ray wrote on 7/25/19 5:48 PM:

I only look at the 5 sec and 30 sec surge ratings to get an
idea what an inverter can really do in the real world.  All
those millisecond ratings/ in rush current specs won't get a
pump or motor started, and will basically just get you into
trouble. The reason they have those ratings in amps and not
watts, is that the voltage craters during that 100mS surge.

I can't tell you how many times we tried to start a pump,
compressor, or large table saw, and the inverter just shut
off, even though the "in rush current" was within the
theoretical inverter capacity.  Actual Wrench list
testimonials are much more valuable than those arcane specs.

Ray Walters

Remote Solar

303 505-8760

On 7/25/19 5:15 PM, Jeff Clearwater wrote:

*Hey There Wrenches,*

So 

[RE-wrenches] Generac Warranty claim ECOGEN 15k

[Maverick Brown]

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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Re: [RE-wrenches] 100ms for Locked Rotor Amps?

[Ray]

I've run a 3 Hp pump on a pair of VFX 3648s, but then the 2nd issue was 
DC voltage sag from the batteries.  We had a string of Rolls 5000s that 
could not keep the voltage high enough below 70% SOC.  Be sure to have 
plenty of battery behind this system.  Also you might look into the soft 
start controllers,  I've used some from Franklin that were a cheaper 
option than a bigger inverter.


Ray Walters
Remote Solar
303 505-8760

On 7/26/19 7:32 AM, Jeff Clearwater wrote:

Thanks Ray and Jerry,

Great to hear from you both with your years of combined experience :)

So yes looking at the 5 sec has me switching back to a trusty Radian - 
even then from what you are saying it may not work.


And you are right Ray -  Outback is careful to rate the "overload 
capability" in KVA rather than KW due most likely to voltage sag of 
course.


So this 53 LRA 2 HP motor - if I can only trust the 5 second (50 A) 
might not start - especially with other loads on the system?


RADIAN SURGE RATINGS:

Maximum Output Current
1 ms peak 100 Amps AC at 240 VAC, 200 Amps AC at 120 VAC
100 ms RMS 70.7 Amps AC at 240 VAC

Overload Capability
100 ms surge 16.97 kVa
5 seconds 12 kVa
30 minute 9 kVa

Other's experience with 2 HP sewage pump or well pump motors on a Radian?

Thanks!

Jeff


Ray wrote on 7/25/19 5:48 PM:

I only look at the 5 sec and 30 sec surge ratings to get an idea what 
an inverter can really do in the real world.  All those millisecond 
ratings/ in rush current specs won't get a pump or motor started, and 
will basically just get you into trouble.  The reason they have those 
ratings in amps and not watts, is that the voltage craters during 
that 100mS surge.


I can't tell you how many times we tried to start a pump, compressor, 
or large table saw, and the inverter just shut off, even though the 
"in rush current" was within the theoretical inverter capacity.  
Actual Wrench list testimonials are much more valuable than those 
arcane specs.


Ray Walters
Remote Solar
303 505-8760
On 7/25/19 5:15 PM, Jeff Clearwater wrote:

Hey There Wrenches,

So be advised that after a little research the SW dual stack will 
NOT double the surge ratings of a single SW.


But that brings me to my second question:

What inverter surge rating should one refer to when looking at 
maximum Inrush or LRA - 1ms?  100ms?  1 sec?


Yourengineering wisdom welcomed!

Thanks,

Jeff



Jeff Clearwater wrote on 7/23/19 8:27 PM:


Thanks for the tip!  I'll check the firmware.

Dave Angelini Offgrid Solar wrote on 7/22/19 9:11 AM:


Hi Jeff,

I am not going to guess if this will work, it should. I use XW's 
because they start anything I have come across.


If you do this, make sure but SW's have the latest and same 
firmware. There were problems with stacked SW's early on in their 
development.


*Dave Angelini Offgrid Solar "we go where powerlines don't" 
http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net 
 text 209 813 0060*


On Mon, 22 Jul 2019 07:26:07 -0700, Jeff Clearwater 
 wrote:



Hey Esteemed Wrenches,

So I recently built a power trailer with a single 4 KW (4048) 
Schneider SW for a client with a moderate cabin lifestyle.


But he lives on a high hill and even though his 2 HP Macerator is 
only rated at 15 amps continuous that baby starts up with a 
whopping kick - probably close to or at it's 53 Amps Locked Rotor 
rating.


The SW has the following surge capability:

SW 4048 Rated@ 240 Volts:
Continuous - 15.2 Amps 3700 Watts
30 Minutes - 18.3 Amps 4400 Watts
5 Secs - 29.2 Amps 7000 Watts
Max (100ms?) - 41 Amps - 9840 Watts

Can I be confidant that 2 stacked SWs will start this baby?

Any experience with similar macerators - or simply educated guesses?

Thanks!

Jeff


--
  
*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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Re: [RE-wrenches] Soft Start Modules for Well and Sewage Pumps?

[chris]

Here at the Oasis home/office, we have a Goulds 3 hp 240VAC soft start pump 
(#18GS30, w/ Franklin motor HS09970 and #3AS30 Aquavar Solo controller); it’s 
been running off of my 2011 Radian GS8048 since 2016, when I had to drill a new 
well (the water table is dropping) and pump from about 300 ft. depth.  I have 
3500 ft. of drip irrigation, a big garden and the usual domestic water loads.  
It’s worked flawlessly since its inception, and I cannot speak more highly of 
Goulds pumps.  My first one lasted 23 years (it was a 1.5HP model).  
 
Best,
 
Chris Daum
Oasis Montana Inc.
406-777-4309 or 4321
406-777-4309 fax
  www.oasismontana.com 
 
From: RE-wrenches  On Behalf Of Dana
Sent: Friday, July 26, 2019 9:34 AM
To: 'Jeff Clearwater' ; 'RE-wrenches' 

Subject: Re: [RE-wrenches] Soft Start Modules for Well and Sewage Pumps?
 
Yes I have used soft starts offgrid with SW & VFX for 15+ years, in spite of 
doing load evaluations & others installing what ever they normally used. It has 
been a great rescue device. Well pump, 2 dish washers, booster pump, etc.
 
 
 
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"  
P Please consider the environment before printing this email.
 
 
From: RE-wrenches mailto:re-wrenches-boun...@lists.re-wrenches.org> > On Behalf Of Jeff 
Clearwater
Sent: Friday, July 26, 2019 8:04 AM
To: RE-wrenches mailto:re-wrenches@lists.re-wrenches.org> >
Subject: [RE-wrenches] Soft Start Modules for Well and Sewage Pumps?
 
Hey Wrenches,

Anyone have success using soft-start modules on well and sewage pumps to lower 
the surge for off-grid inverters?

The baby we are trying to tame is a 2 HP 15 amp, 53 LRA Omnivore Grinder Pump - 
LSG200 series - single phase 230 Vac.

Thanks!

Jeff


~~~
Jeff Clearwater
Village Power Design
linkedin   
www.villagepowerdesign.com  
cell - 413-559-9763
~~~

Jeff Clearwater wrote on 7/26/19 6:32 AM:


Thanks Ray and Jerry,

Great to hear from you both with your years of combined experience :)

So yes looking at the 5 sec has me switching back to a trusty Radian - even 
then from what you are saying it may not work.

And you are right Ray -  Outback is careful to rate the "overload capability" 
in KVA rather than KW due most likely to voltage sag of course.

So this 53 LRA 2 HP motor - if I can only trust the 5 second (50 A) might not 
start - especially with other loads on the system?

RADIAN SURGE RATINGS:

Maximum Output Current 
1 ms peak 100 Amps AC at 240 VAC, 200 Amps AC at 120 VAC
100 ms RMS 70.7 Amps AC at 240 VAC

Overload Capability
100 ms surge 16.97 kVa
5 seconds 12 kVa
30 minute 9 kVa

Other's experience with 2 HP sewage pump or well pump motors on a Radian?

Thanks!

Jeff


Ray wrote on 7/25/19 5:48 PM:


I only look at the 5 sec and 30 sec surge ratings to get an idea what an 
inverter can really do in the real world.  All those millisecond ratings/ in 
rush current specs won't get a pump or motor started, and will basically just 
get you into trouble.  The reason they have those ratings in amps and not 
watts, is that the voltage craters during that 100mS surge.
I can't tell you how many times we tried to start a pump, compressor, or large 
table saw, and the inverter just shut off, even though the "in rush current" 
was within the theoretical inverter capacity.  Actual Wrench list testimonials 
are much more valuable than those arcane specs.
Ray Walters
Remote Solar
303 505-8760
On 7/25/19 5:15 PM, Jeff Clearwater wrote:
Hey There Wrenches,

So be advised that after a little research the SW dual stack will NOT double 
the surge ratings of a single SW.

But that brings me to my second question:

What inverter surge rating should one refer to when looking at maximum Inrush 
or LRA - 1ms?  100ms?  1 sec?

Your engineering wisdom welcomed!

Thanks,

Jeff



Jeff Clearwater wrote on 7/23/19 8:27 PM:


Thanks for the tip!  I'll check the firmware.

Dave Angelini Offgrid Solar wrote on 7/22/19 9:11 AM:


Hi Jeff,
 
I am not going to guess if this will work, it should.  I use XW's because they 
start anything I have come across.
If you do this, make sure but SW's have the latest and same firmware. There 
were problems with stacked SW's early on in their development.
Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridso...@sti.net  
text 209 813 0060
On Mon, 22 Jul 2019 07:26:07 -0700, Jeff Clearwater  
  wrote:
Hey Esteemed Wrenches,

So I recently built a power trailer with a single 

Re: [RE-wrenches] Soft Start Modules for Well and Sewage Pumps?

[Dana]

Yes I have used soft starts offgrid with SW & VFX for 15+ years, in spite of 
doing load evaluations & others installing what ever they normally used. It has 
been a great rescue device. Well pump, 2 dish washers, booster pump, etc.

 

 

 

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"  

P Please consider the environment before printing this email.

 

 

From: RE-wrenches  On Behalf Of Jeff 
Clearwater
Sent: Friday, July 26, 2019 8:04 AM
To: RE-wrenches 
Subject: [RE-wrenches] Soft Start Modules for Well and Sewage Pumps?

 

Hey Wrenches,

Anyone have success using soft-start modules on well and sewage pumps to lower 
the surge for off-grid inverters?

The baby we are trying to tame is a 2 HP 15 amp, 53 LRA Omnivore Grinder Pump - 
LSG200 series - single phase 230 Vac.

Thanks!

Jeff


~~~

Jeff Clearwater
Village Power Design
linkedin   
www.villagepowerdesign.com  
cell - 413-559-9763
~~~


Jeff Clearwater wrote on 7/26/19 6:32 AM:




Thanks Ray and Jerry,

Great to hear from you both with your years of combined experience :)

So yes looking at the 5 sec has me switching back to a trusty Radian - even 
then from what you are saying it may not work.

And you are right Ray -  Outback is careful to rate the "overload capability" 
in KVA rather than KW due most likely to voltage sag of course.

So this 53 LRA 2 HP motor - if I can only trust the 5 second (50 A) might not 
start - especially with other loads on the system?

RADIAN SURGE RATINGS:

Maximum Output Current 
1 ms peak 100 Amps AC at 240 VAC, 200 Amps AC at 120 VAC
100 ms RMS 70.7 Amps AC at 240 VAC

Overload Capability
100 ms surge 16.97 kVa
5 seconds 12 kVa
30 minute 9 kVa

Other's experience with 2 HP sewage pump or well pump motors on a Radian?

Thanks!

Jeff


Ray wrote on 7/25/19 5:48 PM:




I only look at the 5 sec and 30 sec surge ratings to get an idea what an 
inverter can really do in the real world.  All those millisecond ratings/ in 
rush current specs won't get a pump or motor started, and will basically just 
get you into trouble.  The reason they have those ratings in amps and not 
watts, is that the voltage craters during that 100mS surge.

I can't tell you how many times we tried to start a pump, compressor, or large 
table saw, and the inverter just shut off, even though the "in rush current" 
was within the theoretical inverter capacity.  Actual Wrench list testimonials 
are much more valuable than those arcane specs.

Ray Walters
Remote Solar
303 505-8760

On 7/25/19 5:15 PM, Jeff Clearwater wrote:

Hey There Wrenches,

So be advised that after a little research the SW dual stack will NOT double 
the surge ratings of a single SW.

But that brings me to my second question:

What inverter surge rating should one refer to when looking at maximum Inrush 
or LRA - 1ms?  100ms?  1 sec?

Your engineering wisdom welcomed!

Thanks,

Jeff



Jeff Clearwater wrote on 7/23/19 8:27 PM:




Thanks for the tip!  I'll check the firmware.

Dave Angelini Offgrid Solar wrote on 7/22/19 9:11 AM:




Hi Jeff,

 

I am not going to guess if this will work, it should.  I use XW's because they 
start anything I have come across.

If you do this, make sure but SW's have the latest and same firmware. There 
were problems with stacked SW's early on in their development.

Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridso...@sti.net  
text 209 813 0060

On Mon, 22 Jul 2019 07:26:07 -0700, Jeff Clearwater  
  wrote:

Hey Esteemed Wrenches,

So I recently built a power trailer with a single 4 KW (4048) Schneider SW for 
a client with a moderate cabin lifestyle.

But he lives on a high hill and even though his 2 HP Macerator is only rated at 
15 amps continuous that baby starts up with a whopping kick - probably close to 
or at it's 53 Amps Locked Rotor rating.

The SW has the following surge capability:

SW 4048 Rated @ 240 Volts:
Continuous - 15.2 Amps 3700 Watts
30 Minutes - 18.3 Amps 4400 Watts
5 Secs - 29.2 Amps 7000 Watts
Max (100ms?) - 41 Amps - 9840 Watts

Can I be confidant that 2 stacked SWs will start this baby?

Any experience with similar macerators - or simply educated guesses?

Thanks!

Jeff

-- 

 
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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Re: [RE-wrenches] Enphase and Tesla Powerwall

[Chris Mason]

Enphase will release a new off-grid battery in December that will be half
the price of the current battery, don't buy anything from them before then.
Look at Pika Energy. We are installers and they just got acquired by
Generac, we're Generac dealers also so it comes under one roof for us.
The Pika product line is well thought out, DC coupled, does Zero Export
very nicely and uses Panasonic batteries. It's easy to expand from two to
six batteries,
They have an interface to Generac RXS transfer switches which lowers the
cost of transfering.
Looks like a mature product line.
If you have the ability to export to the grid, Sonnen makes a good product
which we have installed, uses Sony batteries which are bulletproof.
We have achieved Zero Export with a Solar-log 1200.



On Fri, Jul 26, 2019 at 10:34 AM Will White  wrote:

> I think they're only selling the Enphase AC battery in Australia currently
> but from what I understand they're phasing that product out in favor of the
> Ensemble (IQ8) battery system that is schedule to come out later in the
> year. You can get info about it on their website if you search Ensemble. It
> looks more like the LG RESU but it's AC and has multiple microinverters in
> it.
>
> 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
> .
>
>
> On Fri, Jul 26, 2019 at 10:27 AM Christopher Warfel <
> cwar...@entech-engineering.com> wrote:
>
>> Most people I have communicated with say the Tesla battery solution is
>> extremely hard to obtain, and there are other options out there.  Tesla
>> never responded to any of my inquiries.
>>
>> Does Enphase even have a battery option that they sell?   My vendor says
>> no, yet that seem to surprise the Enphase Technical Support people. I
>> forwarded to them the vendor email regarding this, and Enphase has not
>> responded.   I have four projects that have asked me to look at a battery
>> solution.  Chris
>> On 7/25/2019 2:49 PM, August Goers wrote:
>>
>> No, we haven't done any zero export. I guess both the Powerwall and
>> Enphase systems would need to be independently programmed for zero export?
>> I should add a caveat - all of our IQ7 systems have been the SunPower
>> branded Equinox type, not Enphase. The main difference being that Enphase
>> would use their envoy box and SunPower uses the PV Supervisor 6.
>>
>> August
>>
>>
>>
>>
>> On Thu, Jul 25, 2019 at 10:53 AM Marco Mangelsdorf 
>> wrote:
>>
>>> Sounds encouraging, August. Mahalo.
>>>
>>> Are any of those systems zero export by any chance?
>>>
>>> marco
>>>
>>> On Thursday, July 25, 2019, August Goers  wrote:
>>>
 Hi Marco - We have dozens of systems with this combo, so far no
 problem. Tesla's AC coupling mechanism in general seems to be very robust -
 we've paired them with many inverter types and brands, and they always seem
 to couple up during our grid-off tests. Since the vast majority of our
 systems are grid tied, the real test will be how they will work over the
 long haul if we have major grid outages - who knows if and when that might
 happen. I've been in PG territory in the Bay Area for about 15 years and
 can only recall one or two short (less than one hour) power outages.


 August




 On Thu, Jul 25, 2019 at 7:58 AM Marco Mangelsdorf 
 wrote:

> Aloha,
>
> I’m thinking about combining the Enphase IQ 7 micros with a Tesla
> Powerwall or two.
>
> Anyone out there try this?  With bueno or not so bueno results?
>
> Mahalo,
> marco
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>> 

Re: [RE-wrenches] Enphase and Tesla Powerwall

[Will White]

I think they're only selling the Enphase AC battery in Australia currently
but from what I understand they're phasing that product out in favor of the
Ensemble (IQ8) battery system that is schedule to come out later in the
year. You can get info about it on their website if you search Ensemble. It
looks more like the LG RESU but it's AC and has multiple microinverters in
it.

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
.


On Fri, Jul 26, 2019 at 10:27 AM Christopher Warfel <
cwar...@entech-engineering.com> wrote:

> Most people I have communicated with say the Tesla battery solution is
> extremely hard to obtain, and there are other options out there.  Tesla
> never responded to any of my inquiries.
>
> Does Enphase even have a battery option that they sell?   My vendor says
> no, yet that seem to surprise the Enphase Technical Support people. I
> forwarded to them the vendor email regarding this, and Enphase has not
> responded.   I have four projects that have asked me to look at a battery
> solution.  Chris
> On 7/25/2019 2:49 PM, August Goers wrote:
>
> No, we haven't done any zero export. I guess both the Powerwall and
> Enphase systems would need to be independently programmed for zero export?
> I should add a caveat - all of our IQ7 systems have been the SunPower
> branded Equinox type, not Enphase. The main difference being that Enphase
> would use their envoy box and SunPower uses the PV Supervisor 6.
>
> August
>
>
>
>
> On Thu, Jul 25, 2019 at 10:53 AM Marco Mangelsdorf 
> wrote:
>
>> Sounds encouraging, August. Mahalo.
>>
>> Are any of those systems zero export by any chance?
>>
>> marco
>>
>> On Thursday, July 25, 2019, August Goers  wrote:
>>
>>> Hi Marco - We have dozens of systems with this combo, so far no problem.
>>> Tesla's AC coupling mechanism in general seems to be very robust - we've
>>> paired them with many inverter types and brands, and they always seem to
>>> couple up during our grid-off tests. Since the vast majority of our systems
>>> are grid tied, the real test will be how they will work over the long haul
>>> if we have major grid outages - who knows if and when that might happen.
>>> I've been in PG territory in the Bay Area for about 15 years and can only
>>> recall one or two short (less than one hour) power outages.
>>>
>>>
>>> August
>>>
>>>
>>>
>>>
>>> On Thu, Jul 25, 2019 at 7:58 AM Marco Mangelsdorf 
>>> wrote:
>>>
 Aloha,

 I’m thinking about combining the Enphase IQ 7 micros with a Tesla
 Powerwall or two.

 Anyone out there try this?  With bueno or not so bueno results?

 Mahalo,
 marco
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-- 

Re: [RE-wrenches] 100ms for Locked Rotor Amps?

[Dave Angelini Offgrid Solar]

The CSW is for a small cabin. Anyone living offgrid with normal loads
should use an XW and they will not have to deal with any of this. It has
been that way since 2006. 

On Thu, 25 Jul 2019 22:17:13 -0700, Jerry
Shafer  wrote:  Wrenches Some time back, (years) l did a off grid system
for a customer that was building his home, he was milli g lumber from the
home site, l quoted a Outback PS-4 3648, the customer already had a very
large battery bank 2000 amp hrs. at 48 DC nominal. Anyway he had a well on
a 5 hp. freq drive and a very big tall 6" bandsaw, trace/Schneider said no
way could there stack do the job and it was larger. Outback on the other
had said no problem and for years after that PS-4 ran the well, the saws
and now the finished home. It is interesting that Schneider was not willing
to do what Outback could, they must have something in there root
programming preventing the stacked surge. Some like Chevrolet, some like
Ford, l have done rows of Radians and lm sure some out there have the same
with other manufacturers. It's all good data for all of us. Jerry
  On
Thu, Jul 25, 2019, 4:15 PM Jeff Clearwater  wrote:  Hey There Wrenches,


So be advised that after a little research the SW dual stack will NOT
double the surge ratings of a single SW.

 But that brings me to my second
question:

 What inverter surge rating should one refer to when looking at
maximum Inrush or LRA - 1ms? 100ms? 1 sec?

 Your engineering wisdom
welcomed!

 Thanks,

 Jeff

 Jeff Clearwater wrote on 7/23/19 8:27 PM:


Thanks for the tip! I'll check the firmware.

 Dave Angelini Offgrid Solar
wrote on 7/22/19 9:11 AM:

Hi Jeff, 

I am not going to guess if this will
work, it should. I use XW's because they start anything I have come across.


If you do this, make sure but SW's have the latest and same firmware.
There were problems with stacked SW's early on in their development. 
Dave
Angelini Offgrid Solar
"we go where powerlines
don't"
http://members.sti.net/offgridsolar/ [2]
e-mail offgridso...@sti.net
[3]
text 209 813 0060

On Mon, 22 Jul 2019 07:26:07 -0700, Jeff Clearwater 
[4] wrote: Hey Esteemed Wrenches,

 So I recently built a power trailer
with a single 4 KW (4048) Schneider SW for a client with a moderate cabin
lifestyle.

 But he lives on a high hill and even though his 2 HP Macerator
is only rated at 15 amps continuous that baby starts up with a whopping
kick - probably close to or at it's 53 Amps Locked Rotor rating.

 The SW
has the following surge capability:

 SW 4048 Rated @ 240 Volts:

Continuous - 15.2 Amps 3700 Watts
 30 Minutes - 18.3 Amps 4400 Watts
 5
Secs - 29.2 Amps 7000 Watts
 Max (100ms?) - 41 Amps - 9840 Watts

 Can I be
confidant that 2 stacked SWs will start this baby?

 Any experience with
similar macerators - or simply educated guesses?

 Thanks!

 Jeff

  --


Dave Angelini Offgrid Solar
"we go where powerlines
don't"
http://members.sti.net/offgridsolar/ [5]
e-mail offgridso...@sti.net
[6]
text 209 813 0060

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http://members.sti.net/offgridsolar/ [17]
e-mail
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text 209 813 0060
 

Links:
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Re: [RE-wrenches] Enphase and Tesla Powerwall

[Christopher Warfel]

Most people I have communicated with say the Tesla battery solution is 
extremely hard to obtain, and there are other options out there.  Tesla 
never responded to any of my inquiries.


Does Enphase even have a battery option that they sell?   My vendor says 
no, yet that seem to surprise the Enphase Technical Support people. I 
forwarded to them the vendor email regarding this, and Enphase has not 
responded.   I have four projects that have asked me to look at a 
battery solution.  Chris


On 7/25/2019 2:49 PM, August Goers wrote:
No, we haven't done any zero export. I guess both the Powerwall and 
Enphase systems would need to be independently programmed for zero 
export? I should add a caveat - all of our IQ7 systems have been the 
SunPower branded Equinox type, not Enphase. The main difference being 
that Enphase would use their envoy box and SunPower uses the PV 
Supervisor 6.


August




On Thu, Jul 25, 2019 at 10:53 AM Marco Mangelsdorf 
mailto:ma...@pvthawaii.com>> wrote:


Sounds encouraging, August. Mahalo.

Are any of those systems zero export by any chance?

marco

On Thursday, July 25, 2019, August Goers mailto:aug...@luminalt.com>> wrote:

Hi Marco - We have dozens of systems with this combo, so far
no problem. Tesla's AC coupling mechanism in general seems to
be very robust - we've paired them with many inverter types
and brands, and they always seem to couple up during our
grid-off tests. Since the vast majority of our systems are
grid tied, the real test will be how they will work over the
long haul if we have major grid outages - who knows if and
when that might happen. I've been in PG territory in the Bay
Area for about 15 years and can only recall one or two short
(less than one hour) power outages.


August




On Thu, Jul 25, 2019 at 7:58 AM Marco Mangelsdorf
mailto:ma...@pvthawaii.com>> wrote:

Aloha,

I’m thinking about combining the Enphase IQ 7 micros with
a Tesla Powerwall or two.

Anyone out there try this?  With bueno or not so bueno
results?

Mahalo,
marco
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Re: [RE-wrenches] Enphase and Tesla Powerwall

[Mark Frye]

Uh, Looking at what is happening with Tesla's share price, I am not sure 
I would want to be "investing" in the products of the neglected solar 
division. With Elon alone at the wheel , the Powerwall et. al. might go 
the way of the Dodo before too long.


I have been working lately with folks who have moved on from the 
vestiges of SolarCity. They don't seem to be very impressed with what is 
happening there, at  least not enough to stick around while the division 
molders under the jaundice eye of the visionaries.



On 7/25/2019 11:49 AM, August Goers wrote:

No, we haven't done any zero export. I guess both the Powerwall and 
Enphase systems would need to be independently programmed for zero 
export? I should add a caveat - all of our IQ7 systems have been the 
SunPower branded Equinox type, not Enphase. The main difference being 
that Enphase would use their envoy box and SunPower uses the PV 
Supervisor 6.


August




On Thu, Jul 25, 2019 at 10:53 AM Marco Mangelsdorf 
mailto:ma...@pvthawaii.com>> wrote:


Sounds encouraging, August. Mahalo.

Are any of those systems zero export by any chance?

marco

On Thursday, July 25, 2019, August Goers mailto:aug...@luminalt.com>> wrote:

Hi Marco - We have dozens of systems with this combo, so far
no problem. Tesla's AC coupling mechanism in general seems to
be very robust - we've paired them with many inverter types
and brands, and they always seem to couple up during our
grid-off tests. Since the vast majority of our systems are
grid tied, the real test will be how they will work over the
long haul if we have major grid outages - who knows if and
when that might happen. I've been in PG territory in the Bay
Area for about 15 years and can only recall one or two short
(less than one hour) power outages.


August




On Thu, Jul 25, 2019 at 7:58 AM Marco Mangelsdorf
mailto:ma...@pvthawaii.com>> wrote:

Aloha,

I’m thinking about combining the Enphase IQ 7 micros with
a Tesla Powerwall or two.

Anyone out there try this?  With bueno or not so bueno
results?

Mahalo,
marco
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[RE-wrenches] Soft Start Modules for Well and Sewage Pumps?

[Jeff Clearwater]

Hey Wrenches,

Anyone have success using soft-start modules on well and sewage pumps to 
lower the surge for off-grid inverters?


The baby we are trying to tame is a 2 HP 15 amp, 53 LRA Omnivore Grinder 
Pump - LSG200 series - single phase 230 Vac.


Thanks!

Jeff


~~~
Jeff Clearwater
Village Power Design
linkedin 
www.villagepowerdesign.com 
cell - 413-559-9763
~~~

Jeff Clearwater wrote on 7/26/19 6:32 AM:


Thanks Ray and Jerry,

Great to hear from you both with your years of combined experience :)

So yes looking at the 5 sec has me switching back to a trusty Radian - 
even then from what you are saying it may not work.


And you are right Ray -  Outback is careful to rate the "overload 
capability" in KVA rather than KW due most likely to voltage sag of 
course.


So this 53 LRA 2 HP motor - if I can only trust the 5 second (50 A) 
might not start - especially with other loads on the system?


RADIAN SURGE RATINGS:

Maximum Output Current
1 ms peak 100 Amps AC at 240 VAC, 200 Amps AC at 120 VAC
100 ms RMS 70.7 Amps AC at 240 VAC

Overload Capability
100 ms surge 16.97 kVa
5 seconds 12 kVa
30 minute 9 kVa

Other's experience with 2 HP sewage pump or well pump motors on a Radian?

Thanks!

Jeff


Ray wrote on 7/25/19 5:48 PM:

I only look at the 5 sec and 30 sec surge ratings to get an idea what 
an inverter can really do in the real world.  All those millisecond 
ratings/ in rush current specs won't get a pump or motor started, and 
will basically just get you into trouble.  The reason they have those 
ratings in amps and not watts, is that the voltage craters during 
that 100mS surge.


I can't tell you how many times we tried to start a pump, compressor, 
or large table saw, and the inverter just shut off, even though the 
"in rush current" was within the theoretical inverter capacity.  
Actual Wrench list testimonials are much more valuable than those 
arcane specs.


Ray Walters
Remote Solar
303 505-8760
On 7/25/19 5:15 PM, Jeff Clearwater wrote:

Hey There Wrenches,

So be advised that after a little research the SW dual stack will 
NOT double the surge ratings of a single SW.


But that brings me to my second question:

What inverter surge rating should one refer to when looking at 
maximum Inrush or LRA - 1ms?  100ms?  1 sec?


Yourengineering wisdom welcomed!

Thanks,

Jeff



Jeff Clearwater wrote on 7/23/19 8:27 PM:


Thanks for the tip!  I'll check the firmware.

Dave Angelini Offgrid Solar wrote on 7/22/19 9:11 AM:


Hi Jeff,

I am not going to guess if this will work, it should.  I use XW's 
because they start anything I have come across.


If you do this, make sure but SW's have the latest and same 
firmware. There were problems with stacked SW's early on in their 
development.


*Dave Angelini Offgrid Solar "we go where powerlines don't" 
http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net 
 text 209 813 0060*


On Mon, 22 Jul 2019 07:26:07 -0700, Jeff Clearwater 
 wrote:



Hey Esteemed Wrenches,

So I recently built a power trailer with a single 4 KW (4048) 
Schneider SW for a client with a moderate cabin lifestyle.


But he lives on a high hill and even though his 2 HP Macerator is 
only rated at 15 amps continuous that baby starts up with a 
whopping kick - probably close to or at it's 53 Amps Locked Rotor 
rating.


The SW has the following surge capability:

SW 4048 Rated@ 240 Volts:
Continuous - 15.2 Amps 3700 Watts
30 Minutes - 18.3 Amps 4400 Watts
5 Secs - 29.2 Amps 7000 Watts
Max (100ms?) - 41 Amps - 9840 Watts

Can I be confidant that 2 stacked SWs will start this baby?

Any experience with similar macerators - or simply educated guesses?

Thanks!

Jeff


--
  
*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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Re: [RE-wrenches] 100ms for Locked Rotor Amps?

[Jeff Clearwater]

Thanks Ray and Jerry,

Great to hear from you both with your years of combined experience :)

So yes looking at the 5 sec has me switching back to a trusty Radian - 
even then from what you are saying it may not work.


And you are right Ray -  Outback is careful to rate the "overload 
capability" in KVA rather than KW due most likely to voltage sag of course.


So this 53 LRA 2 HP motor - if I can only trust the 5 second (50 A) 
might not start - especially with other loads on the system?


RADIAN SURGE RATINGS:

Maximum Output Current
1 ms peak 100 Amps AC at 240 VAC, 200 Amps AC at 120 VAC
100 ms RMS 70.7 Amps AC at 240 VAC

Overload Capability
100 ms surge 16.97 kVa
5 seconds 12 kVa
30 minute 9 kVa

Other's experience with 2 HP sewage pump or well pump motors on a Radian?

Thanks!

Jeff


Ray wrote on 7/25/19 5:48 PM:

I only look at the 5 sec and 30 sec surge ratings to get an idea what 
an inverter can really do in the real world.  All those millisecond 
ratings/ in rush current specs won't get a pump or motor started, and 
will basically just get you into trouble.  The reason they have those 
ratings in amps and not watts, is that the voltage craters during that 
100mS surge.


I can't tell you how many times we tried to start a pump, compressor, 
or large table saw, and the inverter just shut off, even though the 
"in rush current" was within the theoretical inverter capacity.  
Actual Wrench list testimonials are much more valuable than those 
arcane specs.


Ray Walters
Remote Solar
303 505-8760
On 7/25/19 5:15 PM, Jeff Clearwater wrote:

Hey There Wrenches,

So be advised that after a little research the SW dual stack will NOT 
double the surge ratings of a single SW.


But that brings me to my second question:

What inverter surge rating should one refer to when looking at 
maximum Inrush or LRA - 1ms?  100ms?  1 sec?


Yourengineering wisdom welcomed!

Thanks,

Jeff



Jeff Clearwater wrote on 7/23/19 8:27 PM:


Thanks for the tip!  I'll check the firmware.

Dave Angelini Offgrid Solar wrote on 7/22/19 9:11 AM:


Hi Jeff,

I am not going to guess if this will work, it should.  I use XW's 
because they start anything I have come across.


If you do this, make sure but SW's have the latest and same 
firmware. There were problems with stacked SW's early on in their 
development.


*Dave Angelini Offgrid Solar "we go where powerlines don't" 
http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net 
 text 209 813 0060*


On Mon, 22 Jul 2019 07:26:07 -0700, Jeff Clearwater 
 wrote:



Hey Esteemed Wrenches,

So I recently built a power trailer with a single 4 KW (4048) 
Schneider SW for a client with a moderate cabin lifestyle.


But he lives on a high hill and even though his 2 HP Macerator is 
only rated at 15 amps continuous that baby starts up with a 
whopping kick - probably close to or at it's 53 Amps Locked Rotor 
rating.


The SW has the following surge capability:

SW 4048 Rated@ 240 Volts:
Continuous - 15.2 Amps 3700 Watts
30 Minutes - 18.3 Amps 4400 Watts
5 Secs - 29.2 Amps 7000 Watts
Max (100ms?) - 41 Amps - 9840 Watts

Can I be confidant that 2 stacked SWs will start this baby?

Any experience with similar macerators - or simply educated guesses?

Thanks!

Jeff


--
  
*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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