Flipping through the '04 plumbing code I see a few slopes called out
(1/4" per 1' for fixture vents, 1" per 1' for circuit vents, 1/2" per 1'
for combination drain/vent...). Fixture vents have a maximum distance of
a few feet from fixture trap to vent, but I don't think this prevents
you from t
William,
Just to pile on here, if you're running 4 pairs of low-voltage dc for
400' you may be better off just sticking the inverters right there at
the array and making the long run as 240Vac. #2s on each inverter output
(22A?) would work, keeping voltage drop to 1.3%. If you choose to
combi
There is some pressure on NM specifically to postpone adoption of 690.12
until more products are available, so that may help you out. To my
knowledge, micro-inverters don't need to comply with 705.12(D)(6) since
there are no suitable products available [90.4]. Equipment does need to
be listed,
And... after seeing boB's email I realize that my last sentence is
incorrect given the existence of the MNPVHV8-DLTL-3R for exactly this
purpose.
DKC
On 2014/10/9 15:29, Dave Click wrote:
There is some pressure on NM specifically to postpone adoption of
690.12 until more product
I think that someone on this list recommended Solar Scrim a while back
to make the conductors no longer readily accessible after they're
supported; two options, depending on how picky the QA inspector is.
http://www.solarscrim.com/
DKC
On 2014/10/12 10:55, Christopher Warfel wrote:
I looked
I believe that I was told in a 2005-ish Xantrex GT training that their
minimum clearance (~30") requirement came from the need to be above lawn
sprinklers. I can't remember offhand seeing this reason given in any
recent manual, so any bottom clearances required in the manual may apply
to you ev
Bill, typically inverters have a max OCPD that can be installed on their
output, and these sizes are generally not large enough to accommodate
two same-model inverters. And manuals often note that you need to have a
dedicated OCPD anyway. At least if I were ever to double-up two
inverters on a
The inverter to generator ratio is entirely the designer's call and
comes into play for large generators (for residential systems as
mentioned in earlier replies, it's a bad idea).
Interconnecting in spot networks in dense urban areas has a similar
issue in that the distribution system can't h
Mark-
690.56(C) provides the placard you're looking for and 690.56(B) tells
the first responder where that 690.12 switch is, right?
For 2017 there are a couple of proposals out there. One is trying to
better educate that first responder (quickly!) as to what hazards exist.
Another is clarify
Regarding the clipping, which the power electronics guys would rather I
call "power limiting"...
To be clear, "Longer 100% production around noon" (implied in that image
that this is somehow beneficial) means "this system could have produced
more energy but didn't because the inverter was too
m/Products/Documents/SMA_Rapid_Shutdown.pdf
Dave
On 2014/10/9 14:00, Randy wrote:
Steve,
Will there be a retro kit?
Thanks
Randy
Randy Sadewic
Cell: 505 570-0137
ra...@positiveenergysolar.com <mailto:ra...@positiveenergysolar.com>
http://positiveenergysolar.com/admin/content/upload
SAM is what you're looking for:
https://sam.nrel.gov/
I didn't have much luck last time I tried to import TOU utility data,
but you can enter your parameters manually if the auto-import doesn't
work for you.
Dave
On 2015/4/8 16:15, Mick Abraham wrote:
Hello, Mechanix~
A cli
could run that E-W to your
inverters/combiner boxes in combination with N-S rolls of scrim).
Or of course, look to plethora of excellent wire management options
provided by your racking manufacturer. Ha ha ha.
Dave
On 2015/4/17 7:20, AE Solar wrote:
Hey Wrenchers,
Does anyone have suggestions f
g with SMA ahead of time in case the AHJ complains about it
during the field inspection.
Dave
On 2015/5/13 15:47, AE Solar wrote:
Great thanks. SMA says 36" to the bottom of the disco so will go with
that.
On Wednesday, May 13, 2015, August Goers <mailto:aug...@luminalt.com>&
expensive-- encountering a 60A interconnection on a 150A service
makes this worth fighting for, especially on all-in-ones or older
equipment that the homeowner isn't ready to replace.
Dave
On 2015/5/25 19:58, toddc...@finestplanet.com wrote:
wow, engenius. thanks for post
alternative is to just get a whole new inverter.
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
109 S. Albany Street, Ithaca, NY 14850
Voice: (607) 277-1118 x121
www.taitem.com
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Thanks guys for the recommendations.
-Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
109 S. Albany Street, Ithaca, NY 14850
Voice: (607) 277-1118 x121
www.taitem.com
On Wed, Oct 21, 2015 at 6:38 PM, Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote
Slightly different issue, but I have recently had multiple SB-TL screens
not work correctly on arrival. The knock feature was not working and the
backlight would not turn on. Called SMA (or Sunpower) and they are going to
send us new screens.
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer
the shingles when we are done.
On a related note, does anyone have a good product to use on a trapezoidal
(agricultural) metal roof?
Currently we tie ropes to large trees and/or structural members on the
opposite side of the roof.
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Ta
If the customer is very particular, we'll replace the shingle. But most of
the time we just put in an aluminum flashing under the shingle.
-Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
109 S. Albany Street, Ithaca, NY 14850
Voice: (607) 277-1118 x121
www.taitem.co
Solar BOS makes some good disconnects. 4 pole disconnect: F2SK32-1-4XP.
Less Expensive than Midnite Solar, but you have to buy directly from Solar
BOS and the lead times can be longer.
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
109 S. Albany Street, Ithaca
It is not Square D, but a Milbank U5168-XTL-200 would do the trick.
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
109 S. Albany Street, Ithaca, NY 14850
Voice: (607) 277-1118 x121
www.taitem.com
On Wed, Feb 17, 2016 at 3:31 PM, Patrick A. Shortell
wrote
Recently we have had the AFCI trip in a couple SB-TL-22 inverters.
Restarted the inverter, the fault was not still present. It has not tripped
in the month since at either site. Maybe an issue with the inverter? Only
time will tell.
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem
?
Thanks,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
109 S. Albany Street, Ithaca, NY 14850
Voice: (607) 277-1118 x121
www.taitem.com
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to go with metal, I would plan to use an equipment ground sized
for the 175A breaker the is on the battery cables...
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
109 S. Albany Street, Ithaca, NY 14850
Voice: (607) 277-1118 x121
www.taitem.com
On Wed, Jun 1, 2016
ove ground conductor length is
<5' you can go with the 30 degree C ambient temperature.
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
109 S. Albany Street, Ithaca, NY 14850
Voice: (607) 277-1118 x121
www.taitem.com
On Thu, Jun 23, 2016 at 4:41 PM, Peter Pa
here, so I would
assume that they would be pretty good.
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
109 S. Albany Street, Ithaca, NY 14850
Voice: (607) 277-1118 x121
www.taitem.com
On Sun, Aug 21, 2016 at 5:33 PM, wrote:
> i have bought from these folks
Wrenches,
I will be presenting a class on "Solar Home Fire Fighter Safety" to our
local volunteer fire department this coming weekend. I will tour them around
my off grid neighborhood so that we can review various PV, micro-hydro,
different inverters and battery systems, various back-up generat
tting off the fuel sources and or throwing disconnect switches as required.
Dave Palumbo
Independent Power LLC
Hyde Park, VT
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of d...@foxfire-energy.com
Sent: Tuesday, September 20, 2016 9:10 AM
To: RE-wrenches
Su
his can be caused by the generator?
Has anyone run into a situation like this or something similar?
Thanks for your help,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
109 S. Albany Street, Ithaca, NY 14850
Voice: (607) 277-1118 x121
www.
Daryl,
That is what I thought at first. Very rare, but I suppose not impossible
that I
would have two inverters with bad arc fault detectors. But since we are
still
getting arc faults after replacing the inverters, I am thinking that it
must be
something else.
Cheers,
Dave
*--*
*Dave Tedeyan
things you mentioned,
although there
may be a well pump. They also do have a large water storage tank for
heating, but they
say that they have not needed to use it yet this year. Then there is also
the generator...
Thanks for your recommendations.
-Dave
*--*
*Dave Tedeyan*
*Project Engineer
test for this? eGague unit maybe?
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
109 S. Albany Street, Ithaca, NY 14850
Voice: (607) 277-1118 x121
www.taitem.com
On Fri, Nov 11, 2016 at 10:15 AM, Drake <
drake.chamber...@redwoodalliance.org> wrote:
> E
conditions for the faults.
I know that the inverters have fairly recent firmware (2.62.30R) but SMA is
soon to push new
firmware to their -22 inverters. I already have the update and can install
it next time I am there.
It will be interesting to see if new firmware will have any effect.
Cheers,
Dave
ebsite so that we can check
it before we all waste hours on the phone with tech support and on site
tracking down issues that simply cannot be fixed by us.
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
109 S. Albany Street, Ithaca, NY 14850
Voice: (607) 277-1118 x121
ery charging
respectively.
Thanks for your time,
Dave
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
802-371-8678 cell
802-888-4917 home
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be upgraded to 8k in the future?
I will reach out to you, off wrench list, for more info on your Radian GSLC
cabinet methods.
Dave Palumbo
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of William Miller
Sent: Thursday, December 15, 2016 2:18 PM
To
.
. 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
production due to snow and shade.
. Other ideas?
Thanks for the help!
Dave
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
802-371-8678 cell
802-888-4917 home
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he course of the next six years, the
corrosion grew, contaminating the entire connection; but was NOT visible
externally at all! >>
Best regards,
Dave
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
802-371-8678 cell
802-888-4917 home
ening (very tight - tight as I
could without breaking the hardware, lead starts to compress). I've been
very happy with doing it this way for 30+ years. Learned much of this from
Peter Talmage and Rob Wills here back east as well as from Richard Perez
(RIP).
Dave
From: RE-wrenches [mailto:r
connections.
Dave
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of Ray Walters
Sent: Saturday, January 21, 2017 3:05 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Hidden corrosion caused catastrophic battery
system failure
HI Dave;
Based on the
Mac,
I have had good success using Full River AGM's in difficult situations. One
system near the Canadian border here in Vermont had no homeowner care for two
months in the winter. PV array became covered with snow and they had left their
inverter on to run a refrigerator. Of course the batteri
n, or can I get the internal
fan sent out to me so I can repair it myself?
. I used to perform internal power board swaps myself 10 or 12 yrs
ago.
. It's not on warranty so I'd be paying for the parts.
Thanks for your time,
Dave
David Palumbo
Independent Power LLC
needed during rainy periods.
ยท Diesel Gen set charges at 160 Amps, so during the cloudy, snowy
winter periods the hydro and gen combined charge at about a C/7 rate.
Dave
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
802-371-8678 cell
802-888-4917
Not familiar with LG RESU 10 battery. What are they and why do you like them
Dave?
Thanks,
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
802-371-8678 cell
802-888-4917 home
-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re
m the
inverter and also resetting the inverter (off/on).
OutBack tech support says the control board is the most likely cause of this
problem and that I should buy a new board and swap that in. Or, as another
option he said I could let the fan continue to run 24/7.
Any advice?
Thanks,
No
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of Jay
Sent: Sunday, April 30, 2017 10:27 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] OutBack FX Internal Fan running 24/7
Hi Dave,
Did you replace the temp sensor?
Jay
Peltz power.
On Apr 30
e inverter closer to the meter.
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
10 Verizon Lane, Lansing, NY 14882
Voice: (607) 930-3481 x6
www.taitem.com
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Jay,
I just called them about an hour ago about a FP2 system with a failed
inverter. They said they'd have the new control board sent out today,
hopefully they actually will.
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
10 Verizon Lane, Lansing, NY 14882
This one in particular is a warranty repair. They did say that if it was
not warranty that I would be better off getting it through a distributor.
We've used Ameresco in the past.
-Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
10 Verizon Lane, Lansing, NY 14882
source
of this figured out. I had talked to both Sunpower and SMA at the time of
this issue,
and neither was able to give much help.
Cheers,
Dave
*--*
*Dave Tedeyan*
*Project Engineer*
*Taitem Engineering, PC*
10 Verizon Lane, Lansing, NY 14882
Voice: (607) 930-3481 x6
www.taitem.com
On S
Hi August,
We have understood that exception to apply only to the DC side. The inverter
output circuit would fall into typical ground sizing requirements which do
state
that the EGC should be upsized proportionally to the other conductors that
are
upsized for a voltage drop.
Cheers,
Dave
One solution for plumbing vents:
http://www.ipscorp.com/studor
Florida's plumbing code allows these AAVs to be used as long as "within
each plumbing system, a minimum of one stack vent or vent stack shall
extend outdoors to the open air." So you may be able to replace some,
but not all, of you
Zephyr vent fans have a small vent hole located on the pvc housing below the
damper flap so if/when the fan fails the gasses are still able to escape
from the battery box and dissipate into a larger space.
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
www.independent
Dan,
Any worries with inverters located out in 30 below zero temps with either
Electrolytic Caps or Film Capacitors? It's very cold here this AM (minus
twenty something F) and it makes me wonder about all the inverters, both
micro's and string, outside in cold weather areas. We've been told in the
Chris,
It would be very helpful if you quote "run hours" rather than "years".
For example we have seen:
. Inexpensive small generators (generally not worth rebuilding) 300
to 500 hours. These are gasoline models of various brands and Generac LP gas
models. 3kW to 10kW in size typi
We try and install inverters in the basement, or garage, whenever possible
but have many outdoors with no problems so far.
All Earth Renewables have been installing hundreds of trackers here in
Vermont and they all have Sunny Boys mounted on the pole.
Best,
Dave
From: re-wrenches
this year.
If I walk 300 feet away from the house and take a reading in a field 40 feet
in elevation below the house, the temperature is 6 to 8 degrees lower there.
Dave
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of
hursday, January 19, 2012 6:14 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Electrolytic Caps vs. Thin Film Caps
Dave,
That is really good news. I went through this with Steve Jefferson and SMA
recently. They said that -13F was the limit. Steve has posted to this
effect on the list, but I cou
Regarding NEC Article 250.30 does Informational Note #1 mean that a standard
(no battery) grid-tied PV system is not a Separately Derived System?
I'm primarily interested on the consensus view of Bonding the Neutral
(grounded conductor) to Equipment Ground in a 60 Amp Fused Disconnect
located b
P5_1_pg20_TheWire_3
(hat tip to Eric Thomas, who I now see posted about this last April-- I
don't see that anyone's commented on it since)
Also, note that the tap rules don't apply here, so you're better off
calling it something other than "tap" when talking
m basing this off the SEIA tax credit guide v1.2 from 2006
(back when it was publicly available), so your mileage may vary.
Not actually a tax expert,
Dave
On 2012/2/7 16:31, Ray Walters wrote:
Hi All;
I just had a customer ask if he could take the federal solar credit for
his PV system on hi
If you're running them on a rooftop (i.e. not buried),
expansion/contraction is a bigger issue with aluminum than copper-- so
plan for that as best you can, like with loops in pull boxes and sweeps
rather than LBs.
On 2012/2/13 13:39, Exeltech wrote:
AL advantage:
Weight (especially in long o
You may want to look into some of the IREC reports for the technical
information you'd need to help push for net metering.
http://www.irecusa.org/irec-programs/publications-reports/
That of course is based on the assumption that you're dealing with
rational people down there. That's actually go
As Abraham Lincoln famously said, "I'll give it my best shot, but I'm no
Bill Brooks."
A DC ground fault is not impossible on an AC module but it's not the
issue that it is on large DC systems where numerous high-voltage
parallel strings can feed an array fault. When the unit is listed it's
te
Dan,
Thanks for the news. Richard was a wonderful man. One of my first mentors in
the solar business.
Dave Palumbo
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William,
Try Cobra Wire & Cable (215) 674-8773
www.cobrawire.com
Their X-Flex is UL listed
Dave
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
www.independentpowerllc.com
NABCEP Certified PV Installer
Vermont Solar Partner
24 Years Experience, (802) 888-
Allen, UL 1703 simulates a 1" hailstone @ 50mph by dropping a 1.18lb 2"
diameter steel ball 51" onto the glass "at any point considered most
vulnerable." IEC 61215 actually uses a 1" ice ball (what a weird thing
to use when simulating hail, right?) and shoots it at 11 points on the
module at 50
My take: if you have no more than two strings feeding your inverter,
this is NEC compliant. If you have a ten-string array and you're
planning to use a 5-fuse combiner, you're probably out of luck.
Reason 1:
For a typical 240W-ish module your Isc is around 8.5A. 8.5 x 1.56 =
13.3A. If you have
Nick, I don't see that name (or an alternate term) in the report on
proposals (do a search for "120%" or "4-375a").
http://www.nfpa.org/Assets/files/AboutTheCodes/70/70_A2013_NEC-P04_ROPballot.pdf
On 2012/3/9 16:45, Nick Vida wrote:
Hello,
I was wondering if any of you wise wrenches know if 's
Wrenches,
I am trying to chase down NABCEP credit hours from the Feb 28/29th ALT E
Dealer Conference in Waterville Valley, NH.
The trainers said they would send the certificates out to folks when they
got back to their offices. 4 weeks later and no certificates (needed for
recertification for
You can calculate this yourself pretty easily for the many modules that
don't explicitly state their efficiency (or for those that just state
the cell efficiency). Get the total *metric* length and width of the
module from the cut sheet. Multiply to get your area in square meters.
235W / (1.63
Wrenches,
We have an installation in place since 2008 working well with a Solectria
PVI 2500 feeding a supply side grid connection.
Homeowner wants us to double the system size now. I can buy a SB3000
inverter for $ 300 less than the Solectria PVI 2500 (with upcharge for 10 yr
warranty) and I
e a good
fit, and it would replace your fused disconnect. It only has space for
two 2P breakers (no main).
On 2012/4/19 12:29, Dave Palumbo wrote:
Wrenches,
We have an installation in place since 2008 working well with a
Solectria PVI 2500 feeding a supply side grid connection.
Homeowner wants
Dave,
Very good. Thanks for the pick up on the 650A Service Disconnect issue.
Dave Palumbo
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click
Sent: Thursday, April 19, 2012 1:39 PM
To: re-wrenches
All,
We are considering using Solar World 2.0 framed modules. Not having put
hands on these yet, we are looking for testimonials and opinions on these
"top mount only" modules.
And while we're at, it what about Solar World's 2.5's with the bottom mount
flange?
David Palumbo
Independent P
It's my understanding that shingles would not be included, just as you
can't build a house and then claim that it's a 5kW PV rack, for an
$80,000 tax credit. The act of installing PV doesn't necessarily require
that the shingles be replaced.
Electrical panel work may be OK if, say, you're putt
Square D probably has a similar "solar-ready" panel; I remember seeing
some monster (4' tall? they were big) Cutler Hammer panelboards at SPI
2010 that had it too. On my house I have a Square D RC2M200S which has
simply a 200A main plus a 2P 50A breaker (perfect for PV). This is a
much smaller
Here's the Paul Mync / John Berdner article from SolarPro 2.5:
http://solarprofessional.com/article/?file=SP2_5_pg60_Mync
-David Brearley... er... Click
On 2012/5/22 22:36, Bob Clark wrote:
Wrenches:
Sorry to bring up this situation again, but I could not find a previous
discussion thread that
We did a paper on this back in 2000 that folks may find interesting. A
bit outdated- two 10W (thin film) fans were used for a 1000 sf home.
http://www.fsec.ucf.edu/en/publications/html/FSEC-GP-171-00/index.htm
Conclusion:
"Comparing periods with similar weather conditions, the test revealed
tha
the
modules so your higher-voltage modules are on the 10-module strings...
fun, right?
Dave
On 2012/6/26 11:38, Allan Sindelar wrote:
Wrenches,
We have been hired to serve as independent consultants on a large Sunny
Boy/Sunny Island off grid project. The array and the battery bank (of
unknown
ifically RE-B's either L-16, or T-105. And have
used Trojan Industrial IND 13-6V on one system with good success with
another set ordered.
Dave
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of SunHarvest
Sent: Friday, June
I always thought that installing lag screws was tough enough with pilot
holes- I should hit the gym. I'm not a structural PE, but I think that
not drilling pilot holes violates the American Wood Council's National
Design Specs and therefore violates the IBC too. I would imagine that
you'd be mu
our target). Is this programmable automatically with this OutBack
setup or do we need to trigger a bulk charge manually?
. If so. What is the easiest, and or best way, to trigger the bulk
charge?
Thanks,
Dave
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde
As a note for tile roofs: the tile keeps most of the water on top of it
but it's not the actual sealed layer. The underlayment is the true
waterproofing layer, so be sure you seal the penetration through the
underlayment as well as the hole you cut in the tile.
On 2012/7/18 23:42, Parrish, Pe
http://solarabcs.org/about/publications/reports/module-grounding/index.html
(see the Issues & Recommendations report)
Phil is right that UL 2703 isn't finalized yet so it's not actually a
requirement. However, I imagine that module installation manuals and UL
1703 will both refer to 2703 soon,
or" applies to the largest conductor in the PV
system (likely your homerun DC).
Dave
On 2012/7/20 15:06, Garrison Riegel wrote:
Wrenches,
I have GEC sizing issue and would greatly appreciate any advice you can
share.
We have a small commercial grid-tie system installing on a facility with
(A)(1). So if you're
going to building steel or a water pipe, 250.166(B) is applicable and so
8 AWG Cu should be acceptable for this connection.
Hope that clarifies!
DKC
On 2012/7/23 13:27, Garrison Riegel wrote:
Hi Dave (and all)
Thank you for your response.
I appreciate your pers
Enphase already positive-grounds the module:
http://enphase.com/support/installation-wiring/
Q: The Enphase Microinverter manual states that the device is positively
grounded. Don't most PV modules have negative grounds? Is this a problem
for Enphase?
A: Enphase made the decision to positively
Dave,
Sounds like a great solution. We have an OB Radian net-metered PV with
battery back-up coming up this fall. Where do we source an "Elkor" meter?
Thanks,
Dave
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
www.independentpowerllc.co
I've seen that one a lot, too. And not to quibble, but the 1-line
depicts this correctly (no inline fuse shown in the inverter DC
disconnect box), though there should be a note making this more explicit.
Speaking of sunny days turning off the system, how about the 3 30A
inverter breakers' comb
ore simply:
24 A per inverter x 1.73 = 41.5 A
However, no one reviewing a single-line should have to guess about the service
type
On Aug 30, 2012, at 3:12 PM, Dave Click wrote:
I've seen that one a lot, too. And not to quibble, but the 1-line depicts this
correctly (no inline fuse shown
Short-circuiting should be OK for crystalline cells, but some thin film
manufacturers ask you not to do this. On the jumper-cutting, I agree
with the others that you probably shouldn't create arcs just for fun!
On 2012/9/17 23:50, Mark Frye wrote:
Wrenches,
True or False: In a nominal sort of
Mr. Brooks had an email on this topic on 5/8, 12:58pm ET. NEC officially
says that the conductor needs to be upsized but the 2014 will fix it
because that is dumb. I've copied some of Bill's email below.
**
The key distinction was used in my proposal to the 2014 NEC that removed
the statement
Good input on the Atlantis options-- does anyone have experience with
the www.bipvinc.com or www.lumetasolar.com products?
On 2012/10/2 13:06, Robert Evans wrote:
I installed the BOS for an Atlantis Sunslates system back in 2003-04,
and commissioned the system. Based on my experience I couldn't
dirty, dirty dirty
Holt E. Kelly
Holtek Fireplace & Solar Products
500 Jewell Dr.
Waco TX. 76712
254-751-9111
www.holteksolar.com
- Original Message - From: "Dave Click"
To:
Sent: Tuesday, October 02, 2012 1:22 PM
Subject: [RE-wrenches] BIPV Options
Good input on the Atla
Check out the new SMA Smartformer, though I'm not sure whether it's
actually shipping yet. I'm thinking about this for my house eventually
(SB5000US).
http://www.sma-america.com/en_US/products/off-grid-and-back-up-solutions/smartformer-for-sunny-island.html
Alternatively, the new SMA TL invert
flammable things anywhere
close to it. I had a couple of Todds spark off a number of years ago. Caused
some excitement.
-Dave
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
www.independentpowerllc.com
NABCEP Certified PV Installer
Vermont Solar Partner
24 Years
Erika, I think the takeaway here is that the Island only has that surge
power capacity on the protected load side- you wouldn't see this surge
on the utility side. SMA should be able to provide this sort of
documentation for you.
On 2012/10/18 9:38, Erika Weliczko wrote:
Greetings all.
I rec
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