Hi William,
You might try reaching out to Roy Dyngen of SMA - he is a good contact for
these types of general questions. Email me off list if you would like his
contact info.
Is the SMA BATFUSE available in the US? Anyway, SMA has always recommended
connecting the negative of the batteries
Jason,
We've been able to get a hold of tech support at 877.261.1374 which I think
is the normal number they have on their website. Good luck. -August
*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Jason Szumlanski
*Sent:*
of no return from sun exposure although
the color definitely fades. We also bonded both ends of the tray per NEC
250.97 which added a little complexity to the installation. NEC article 392
Cable Trays is worth reading if you haven't already.
-August
August Goers
Principal
Luminalt Energy
Hi William,
About 5 years ago this became a big issue up in San Francisco and we had to
learn the hard way. We used to just go buy outdoor EMT fittings and we were
okay, then the inspectors started requiring fittings that say raintight or
wet location (often stamped “wetloc”) on them. I don’t
-boun...@lists.re-wrenches.org [
mailto:re-wrenches-boun...@lists.re-wrenches.orgre-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *August Goers
*Sent:* Thursday, January 16, 2014 8:00 AM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Concrete tight versus raintight
Hi William,
About 5
All Battery Wrenches,
I’m servicing an existing battery backup system with some big Deka AGM
battery banks. I believe they are about 12 years old. Does anyone have any
general comments about Deka batteries? Any suggestions about how I would
test these would be greatly appreciated. Here’s a link
Hi Chris,
Another free option might be RETscreen:
http://www.retscreen.net/ang/version4.php
OnGrid and Clean Power Finance Tools are two popular paid options, both
offer free trials I believe.
-August
*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
Hi Roland,
We’ve installed around ten Power-One micro systems with mostly good
results. All in all, I’d say the installation is very similar to an Enphase
M215 based system if you are familiar with those. As William mentioned on a
separate post, the cabling is a bit expensive but otherwise
Hi Glenn,
This is a confusing passage without seeing the context from the other parts
of 690.47 (A, B, C etc). Can you send the full passage if it’s handy for
you? My 2014 NEC is in the mail so I have yet to see the full implications
of this section.
Best,
August
*From:*
].
On 2013/11/19, 12:38, August Goers wrote:
Hi All –
On a related note, I’ve become good friends with some of the inspectors in
San Francisco and they called me yesterday with a question. Is it okay to
run *individual* DC conductors through EMT for wire management purposes? We
have always run
in conduit so the
question had never occurred to me. Obviously, you have to bond both ends of
the conduit if it is over 250 v. I know that AC would have induction issues
with running individual conductors but I’m not sure with DC.
Thanks,
August
August Goers
Principal
Luminalt Energy
a
return leg which would have no pair back to the combiner/junction box?
jay
peltz power
On Nov 19, 2013, at 9:38 AM, August Goers wrote:
Hi All –
On a related note, I’ve become good friends with some of the inspectors in
San Francisco and they called me yesterday with a question
Hi All –
I’m not sure whether Hellermann Tyton is related to Heyco, but I know of
the SunBundler product through Heyco:
http://www.heyco.com/Alternative_Energy_Products/pdf/1-15-new.pdf
-August
*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
in the
box. Luckily it didn’t spread to the roof – it was still arcing away when I
busted open the rusted lid. That seems like a workmanship the materials
selection issue to me.
Best,
August
August Goers
Luminalt Energy Corporation
o: 415.641.4000
m: 415.559.1525
www.luminalt.com
*From
they might be worth checking out. -August
*August Goers*
Principal
Luminalt Energy Corporation
o: 415.641.4000
m: 415.559.1525
www.luminalt.com
On Fri, Oct 18, 2013 at 9:45 AM, August Goers aug...@luminalt.com wrote:
Hi Bill -
Thanks, this is helpful info. Do you know how to calculate
Chris,
Good point, we've installed a few of these P1 10k units and have been
relatively happy. My understanding is that the first batch being sold in
the US was very problematic but I think they're ironing out the kinks now.
We have had a couple of failures but P1 tech support swapped them with
Hi Bill -
Thanks, this is helpful info. Do you know how to calculate or approximate
how we would keep the unbalanced voltage to less than 3%? I guess I need to
check out ANSI/C84.1-2011 but I thought maybe there are some ballpark rules
of thumb.
Thanks,
August
*August Goers
Don -
Unfortunately I believe the Sunny Tripower is only good for 480 V
applications. I'm not aware of other 240 V 3-phase inverters on the market
(other than the Fronius). We run into a lot of 208 V 3-phase here in the
Bay Area and unfortunately can't use these cool new 3-phase inverters from
yet where
it didn't work. Our pricing has this cost worked into it.
Best, August
*August Goers*
Principal
Luminalt Energy Corporation
o: 415.641.4000
m: 415.559.1525
www.luminalt.com
On Wed, Oct 16, 2013 at 1:01 PM, ma...@berkeleysolar.com wrote:
Guys,
I am thinking of getting back
Wrenches,
Have you folks seen this:
http://www.greentechmedia.com/articles/read/SolarCity-Acquires-Zep-Solar-For-158-Million
Lots of interesting ramifications for us smaller guys as the bigger
companies move closer and closer to vertical integration.
-August
William,
You have 9 M190s each running at 800 mA according to spec sheet. That
equals 7.2 A nominal output current. Plus you have 10 M250s (if you look at
your drawing) each running at 1 A = 10 A. 7.2 A + 10 A = 17.2 A * 1.25 =
21.5 A min breaker size. So, you'll need to round your breaker to a
All -
Just a quick follow up to this thread. My understanding is that you can use
black USE-2 or PV Wire under the 2008 and 2011 NEC for all grounded and
ungrounded conductors.
2008 NEC has section 200.6(A)(2) Grounded Conductors which reads (it is
section 200.6(A)(6) in 2001 NEC):
A
Jason,
There is a small ex-Satcon employee group supporting their inverters for a
fee. If you're interested contact me off list and I'll get you a contact or
two.
Best,
August
*August Goers*
Luminalt Energy Corporation
o: 415.641.4000
m: 415.559.1525
*From:* re-wrenches
All -
If you haven't already seen it, you might want to try playing with the
numbers on Enphase's online calculator:
http://enphase.com/module-compatibility-calculator-m250-update/
-August
*August Goers*
Principal
Luminalt Energy Corporation
o: 415.641.4000
m: 415.559.1525
] transformerless inverters and conductor colors
Thanks.
Does this wire have “PV Wire” written on the insulation jacket?
*From:* re-wrenches-boun...@lists.re-wrenches.org [
mailto:re-wrenches-boun...@lists.re-wrenches.orgre-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *August Goers
*Sent
they say Photovoltaic in the spec sheet, I am not sure that
this is PV Wire. I don't see anywhere that it actually uses those exact
words, and that is the designation in the NEC.
Blessings,
Kelly
On Sep 27, 2013, at 10:38 AM, August Goers wrote:
Marco,
Yes, there is single jacketed PV
Here's a good place to go to find mileage:
http://www.fueleconomy.gov/feg/Find.do?action=sbsid=32557
38 kW-hrs/100 mi for the Tesla Model S.
Todd, isn't your estimate below off by a decimal?
Best,
August
*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
Hi Charlie,
I can't help but be intrigued by your setup here. It seems like the
complete opposite of where our commercial systems are going with
transformerless 1000 V inverters entering the market. Anyway, I'm sure it's
an interesting project and there may very well be advantages to the system
to
be the issue here.
Looks like a nice building!
Best,
August
*August Goers*
Luminalt Energy Corporation
o: 415.641.4000
m: 415.559.1525
*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Nik Ponzio,
Building Energy
*Sent
://solar.hollaender.com/
I'm looking forward to seeing if anyone else knows about off the shelf
longer stanchions. Unirac used to make custom longer lengths of their steel
standoff but no longer offer it.
Best,
August
*August Goers*
Luminalt Energy Corporation
o: 415.641.4000
m
wondering if multiple 7 Unirac 2-piece Stand-Offs cylinders threaded
together with all-thread would be a structurally sound solution. I'll pass
that option by the engineers...
Still hoping for an off-the-shelf solution...
J
ason
On Tue, Sep 10, 2013 at 4:38 PM, August Goers aug
Marco,
You might try http://pv-cables.com/ my contact there is Bryan. They sell
all kinds of PV wire, connectors, etc for good prices.
Do you have 1000 V TL inverters or just 600 V? If you are using 1000 V the
whole wiring game changes quite a bit.
Best,
August
Luminalt
*From:*
also use a Seaward Solar PV150 solar test kit for testing strings.
On Thu, Aug 22, 2013 at 4:03 PM, August Goers aug...@luminalt.com wrote:
Hi Wrenches,
It's new tool time!
We're starting engineering for our first 1000 V small and medium commercial
systems. There are all kinds of details
376 which also measures AC and DC
current but it is a bit expensive. The Fluke T5 is much cheaper, measures
1000 VDC, but doesn't measure DC current. Anyone have a meter that they
like that can handle 1000 V?
Best,
August
*August Goers*
Luminalt Energy Corporation
o: 415.641.4000
m
battery power to the grid.
Thoughts?
-August
*August Goers*
Luminalt Energy Corporation
o: 415.641.4000
m: 415.559.1525
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Change email address settings
. I am skeptical to say the least.
Best,
August
*August Goers*
Luminalt Energy Corporation
o: 415.641.4000
m: 415.559.1525
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Change email address
. These two circuits in parallel will be fine for
your MPPT, you'll have essentially the same voltages but slightly higher
current in your new second string.
DKC
On 2013/7/12 19:27, August Goers wrote:
Hi Wrenches,
I have a client with a small system consisting of 6 SunPower 230s and a SMA
SB
Hi Benn,
This sounds tricky. We've occasionally painted silver rail black on the
ends with Rust-Oleum matte black paint. It always seems to adhere well but
I don't know for sure how long it will last. I've never tried painting
silver over black.
Is the client unhappy with black rail and silver
Hi Dave,
I'm not sure I'm understanding your scenario clearly but I'll take a crack
at it. The Enphase system should have a bare #6 GEC for each micro and can
then transition to a #8 green GEC once in conduit and run all the way back
to the main ground electrode system. The #6 and #8 should be
PM, August Goers aug...@luminalt.com wrote:
Hi Dave,
I'm not sure I'm understanding your scenario clearly but I'll take a crack
at it. The Enphase system should have a bare #6 GEC for each micro and can
then transition to a #8 green GEC once in conduit and run all the way back
to the main ground
The most common mistake I've seen is not correctly using white/gray for
the grounded conductor on the DC side. I've seen errors most commonly with
positive grounded systems (SunPower) but often times installers use black
in place of white or something along those lines. It definitely gets
Hi Carl,
I'm glad you're making some progress. I've always had good luck following
the Schuco table for setting the expansion tank pressure. I would expect
the pressure in the expansion tank to be higher than the glycol charge
pressure under most fully charged circumstances. For example, if you
Hi Carl,
Daniel's points all seem good.
We have had a Schuco system with a blown expansion tank bladder exhibiting
similar behavior to what you describe. It sounds like you said that the
expansion tank has the correct pressure at 26 psi but you might want to
bleed the expansion tank through
Jeff,
Why are you looking to do a supply side connection? If you're going with
new equipment you could go with a 225 A main panel with a 200 A main
breaker and do a load side connection.
Best, August
*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
Hi All -
Thanks for all the valuable advice. I think all of our recommendations are
right on and we will take them into account when coming up with our revised
policies. As always, the Wrenches list is indispensable!
Best,
August
*August Goers*
Luminalt Energy Corporation
o
and
expectations for their monitoring systems? Any ideas out there on how to
put more responsibility on the client while still keeping them happy?
Thanks in advance,
August
August Goers
Luminalt Energy Corporation
o: 415.641.4000
m: 415.559.1525
___
List sponsored
Does PVWatts really account for hourly weather data such as overcast
conditions in the afternoon? I think it just accounts for average solar
radiation for a particular location on a monthly basis but I could be
wrong. Anyone care to chime in?
-August
*August Goers*
VP, Engineering
o
This is fascinating - the majority of the Enphase failures reported on this
list seem to be near coastal areas. I know that is true for us. We've had
extensive failures on the M190 and M210 units close to the ocean. We have
yet to have a single M215 failure so I have my fingers crossed.
SMA has
Most jurisdictions around here allow the AC and DC wires to be
bundled/separated by cable ties.
Best, August
*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Aaron Mandelkorn
*Sent:* Saturday, April 27, 2013 2:07 PM
*To:*
I too share the concern about standard plastic zip ties. However, I started
in the industry in 1997 and have yet to see zip ties that are falling
apart. Does anyone on the list have firsthand experience with failed
plastic zip ties?
Best,
August
August Goers
Luminalt Energy
.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 4/15/2013 2:20 PM, August Goers wrote:
Hi Drake,
The Sunny Island System runs at 48 V nominal so I don't believe 250.162(A)
applies. We have some really
, X 747
M: 530.277.4894
*From:* re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.orgre-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *August Goers
*Sent:* Wednesday, April 10, 2013 9:45 AM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Fuse sizing
Eric,
NABCEP just had an annual continuing education conference in Sacramento
with three days of various hands on classes including a good deal focusing
on battery backup systems. It was initially only open to NABCEP certified
folks but registration was eventually opened up to others. You might
:
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules etiquette:
www.re-wrenches.org/etiquette.htm
Check out participant bios:
www.members.re-wrenches.org
--
August Goers
Luminalt Energy Corporation
1320 Potrero Avenue
San Francisco, CA 94110
O: 415.641.4000
M
the manufacturer to list the entire service and line tap
in my experience. You might want to look into that if you think your
jurisdiction might have similar concerns.
Good luck!
Best,
August
August Goers
Luminalt Energy Corporation
1320 Potrero Avenue
San Francisco, CA 94110
m
Jeremy,
Good point. Even under the 2008 NEC 690.64(B)(2) you can install up to a 40
Amp breaker on the load side as long as it is on the opposite side of the
input feed per 690.64(B)(7). Garrison, do you need a 60 A breaker?
I haven't used this product myself, but if the continuous output
rather than through the battery inverter but this definitely has the
potential to open up doors and potentially reduce equipment cost.
Best,
August
August Goers
Luminalt Energy Corporation
1320 Potrero Avenue
San Francisco, CA 94110
m: 415.559.1525
o: 415.641.4000
aug
Hi William,
You may have already seen this corrugated bracket from S-5:
http://www.s-5.com/clamps/index_2624.cfm
I believe it’s best to have the screws go into purlins. These are fairly
low cost; contact me offlist if you want me to send you distributor contact
info.
As far as figuring out
Hi Wrenches,
I imagine that all of us working in rooftop PV have put some good hard
thought on the best way to get the modules up to the roof. There are
various lifts on the market, you can hoist them with ropes manually, or
walk them up a ladder (sling them over your back). I find that the
-0950
*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *August Goers
*Sent:* Thursday, February 07, 2013 12:44 PM
*To:* RE-wrenches
*Subject:* [RE-wrenches] getting PV modules up to the roof
Hi Wrenches,
I imagine that all
Hi Jason,
Perhaps you can point out that NEC 690 addresses photovoltaics and points
to other sections of the code as necessary. I don't think NEC 690 mentions
that PV is mechanical equipment.
-August
*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
clarification point and directs you to 250.92(B)(2) through
(B)(4).
Best,
August
August Goers
Luminalt Energy Corporation
1320 Potrero Avenue
San Francisco, CA 94110
m: 415.559.1525
o: 415.641.4000
aug...@luminalt.com
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
Hi Chris,
Here are my thoughts on your questions/notes below. Please note that I'm in
no way an expert in this field, I've only had to deal with it from time to
time through our workings with various situations and AHJs.
1. I believe terminal and equipment ratings can vary within one
Marco,
Nearly all jurisdictions in the SF Bay Area require design drawings in
order to obtain a permit. However, the City of San Francisco has an
expedited permit process for systems of 4 kW or less. If you sign off on
all for their requirements on a checklist you do not need to submit
drawings
All -
This thread brought up a question I've been mulling over for a while - what
is the best flush mount rack out there these days on the market? I've tried
a lot of different racks and am always on the hunt to find something better
but the more experience I get I keep going back to Pro Solar
that
justifies stocking another type of panel and or racking system.
Best,
August
August Goers
Luminalt Energy Corporation
1320 Potrero Avenue
San Francisco, CA 94110
m: 415.559.1525
o: 415.641.4000
aug...@luminalt.com
*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
re
Thanks Brian. This has been a helpful thread for me. Mark Frye, thanks for
kicking it off.
Best, August
August Goers
Luminalt Energy Corporation
1320 Potrero Avenue
San Francisco, CA 94110
m: 415.559.1525
o: 415.641.4000
aug...@luminalt.com
*From:* re-wrenches-boun...@lists.re
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of August
Goers
Sent: Monday, January 14, 2013 4:32 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] GEC for Micro-Inverters and ACPV Modules
Hi Mark,
There have
Hi Mark,
There have been some recent threads on this list touching on this topic.
As far as I understand, Enphase microinvertes still require a GEC up to
and including the 2011 NEC. I don't know about the 2014 NEC. Enphase bonds
the positive DC module conductor to ground. Pages 16 and 17 of
Hi Larry -
Chem Curbs might work for the application you're describing:
http://chemlink.com/content/docs_new/brochures/brochure3.pdf
The curb is about 2 high if I remember correctly so a 3 stanchion will
work.
Best,
August
*From:* re-wrenches-boun...@lists.re-wrenches.org
I haven't seen Enphase units interfering with any radio equipment and we do
have several clients with really specialized radio gear. However, I've seen
all sorts of relatively unexplainable electrical interference affecting the
communications with the Envoy box. This may either be between the
Hi All --
Thanks for the feedback. Yea, we've always used Sunny Islands with
batteries for anything that needs to run off grid. This was more of just a
theoretical question. From what I heard, it sounds like the excess current
from the PV might damage the generator (or I suppose anything
Hi Wrenches,
I have a quick theoretical question related to trying to run a standard
grid tied PV system off grid with a generator. A client called me wondering
if he could run his small Honda generator off grid connected to his load
center and then turn on his PV system. What would happen if
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Power One Microinverters
Hi August. I'm curious about these inverters as well. Have you learned
anything outside of the Wrenches list about their track record?
Take care.
Bruce
On 10/30/2012 9:08 AM, August Goers wrote:
Hi Wrenches -
Has anyone
installed costs.
Best,
August
August Goers
Luminalt Energy Corporation
1320 Potrero Avenue
San Francisco, CA 94110
m: 415.559.1525
o: 415.641.4000
aug...@luminalt.com
*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
re-wrenches-boun...@lists.re-wrenches.org] *On Behalf
device called Aurora CDD communicates
wirelessly with the microinverters compared to power line communications
with Enphase. They also seem to be at a higher price point compared to
Enphase although they are higher wattage at 250 and 300 Watts.
Best,
August
August Goers
Luminalt Energy
the SolarBridge AC
module but I'm not sure about availability.
Good luck with it.
Best,
August
August Goers
Luminalt Energy Corporation
San Francisco, CA 94110
m: 415.559.1525
o: 415.641.4000
aug...@luminalt.com
*From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
re
Jason,
Glenn's point below sounds correct to me. We've run several microinverter
projects with romex, but always have to do the transition in the attic
because romex is not rated for wet locations. Some of the local
jurisdictions around the Bay Area are onto this point.
Also, NEC 250.64(B)
tenKsolar has contacted me several times recently about their product. They
have a slightly interesting concept with the cross woven cell wiring but
otherwise I'm not sold. Not only am I not sold but I'd stay away with a 10'
pole. At least for me, the last thing I need is to be experimenting with
, is it okay to install our inverter breaker on either the
bottom or the top? If not, then our only resort is to either upgrade the
service or downsize the main breaker which isn't always possible to do.
Thanks for your thoughts in advance.
Best,
August
August Goers
Luminalt Energy
Mountain Solar, Inc.
www.bluemountainsolar.com
On 10/15/2012 9:32 AM, August Goers wrote:
Hi Wrenches,
Here is yet another 120% rule question as it relates to center fed main
panels. 2011 NEC 705.12 deals with inverter point of connection and
705.12(D)(7) reads:
*Inverter Output Connection
Hi David and Rebecca -
We're still in the 2008 code cycle here in California so AFCI hasn't become
an issue yet. I just listened to a webinar by SMA last week and I believe
that their AFCI Sunny Boys wont' be shipping for at least a couple of
months.
Rebecca, have you already installed this
replacing PV arrays and other products may
be far more costly than installing an AFCI detector.
Bill.
*From:* re-wrenches-boun...@lists.re-wrenches.org [
mailto:re-wrenches-boun...@lists.re-wrenches.orgre-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *August Goers
*Sent:* Sunday
Hi Wrenches,
Do any of you know the reason why we might use an independent trip versus a
common trip two pole breaker for a solar inverter? My understanding is that
the independent trip will only trip the individual line effected by the
overcurrent condition compared to the common trip which
William,
Good points. Keep in mind that both of these breakers have handle ties
(both are two pole), it's just that one can trip independently and the
other forces both to trip. What is the correct solution for 240 V solar
inverters? It seems like common trip is the best way to go but I've not
nipple to
corrode so quickly. I wonder if there is a grounding issue with the tank or
maybe it's just the nature of galvanized fittings.
Best,
August
August Goers
Luminalt Energy Corporation
1320 Potrero Avenue
San Francisco, CA 94110
m: 415.559.1525
o: 415.641.4000
aug
William,
You might try calling Enphase again. I was discussing a similar issue with
them recently and they said that they have a noise filter option for
handling noisy lines. As with all tech support, some representatives are
better than others.
-August
August Goers
Luminalt Energy
All -
We attempted a couple of jobs with the S5! kit and no rails and lining
everything up was tough. Pro Solar rail directly to the S5! clamps works
great or Unirac with L feet even gives more installation flexibility.
Sounds like almost all of the responses are along these same lines.
Hi Eric,
We've used TTi, EcoFasten, and Quick Mount. I like Quick Mount the best but
they are a bit pricy so we've been using Eco Fasten for the majority of our
work over the last year. If anything, I've found that TTi requires more
labor and is more likely to require shingle cutting plus I'm
Hi All Wind Wrenches,
We have 5 turbines recently installed in the Golden Gate National park
land in San Francisco. They are small 1 kW vertical axis units - I was not
happy about installing vertical axis but that was what the client wanted.
The good news is that each turbine is being monitored
) to see.
Thank you,
Jason Lerner
Waldron Power and Light Co.
On Jun 22, 2012, at 8:01 AM, August Goers wrote:
Hi All Wind Wrenches,
We have 5 turbines recently installed in the Golden Gate National park
land in San Francisco. They are small 1 kW vertical axis units - I was
not happy about
Jeff,
Yea, sounds like a pain. We've been through this before with several high
profile projects in the Bay Area. Luckily, we have a lawyer on staff and
have gone through the waiver process in order to obtain marketing approval.
It might be possible to obtain a waiver that blankets the future
busbars) seems to be more prevalent on the common trip models. Anyone a
breaker guru who can explain why one might one or the other?
Thanks,
August
August Goers
Luminalt Energy Corporation
1320 Potrero Avenue
San Francisco, CA 94110
o: 415.641.4000
aug...@luminalt.com
that there's an enormous fusion reactor
safely banked a few million miles from us. It delivers more than we could
ever use in just about 8 minutes. And it's wireless!
~William McDonough
On Mon, May 7, 2012 at 10:55 AM, August Goers aug...@luminalt.com wrote:
Hi Wrenches,
Please see question below
Hi Wrenches,
Please see question below forwarded from one of my fellow engineers.
Thanks, August
*From:* Eric Schoonbaert [mailto:e...@luminalt.com]
*Sent:* Monday, May 07, 2012 9:38 AM
*To:* August Goers
*Subject:* 120% Rule
The 120% rule, and how it is applied to panel board bus size
We have over 1000 Enphase units installed of multiple types - mostly M210s
and M190s. We just had our first overt failure of an M190. It just went
dead after a couple of months of operation. I'll keep my eye out for
underperforming units but haven't noticed any yet.
-August
*From:*
Hi Wrenches,
We have several installations from a few years ago where we're noticing
strange discoloration around the corners of the absorber plate:
I'll keep the manufacturer anonymous at this point but I'm wondering if any
of you have experience with this and if so what the problem might
LinkedIn
August Goers requested to add you as a connection on LinkedIn:
--
Doug,
I'd like to add you to my professional network on LinkedIn.
- August
Accept invitation from August Goers
http://www.linkedin.com/e/-xy4d8h-gsvto1jz-3
to be mounted above a sloped
driveway.
Any opinions and interpretations would be appreciated.
Thanks,
August
August Goers
Luminalt Energy Corporation
1320 Potrero Avenue
San Francisco, CA 94110
m: 415.559.1525
o: 415.641.4000
aug...@luminalt.com
and the modules were
operated at to high a voltage above the Vmp voltage, I replaced the inverter
and problem fixed.
--
*From:* August Goers aug...@luminalt.com
*To:* RE-wrenches re-wrenches@lists.re-wrenches.org
*Sent:* Thu, February 3, 2011 6:01:11 PM
*Subject:* [RE
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