hed-roof-array-layout-for-fire-code-compliance?v=disable_pagination
<http://solarprofessional.com/articles/design-installation/pitched-roof-array-layout-for-fire-code-compliance?v=disable_pagination>
If you’d like a PDF copy of the article, just send me a direct message.
David Brearley
Sen
there are established standards that
apply to flashing and waterproofing according to roof type.
David Brearley
Senior Technical Editor, SolarPro
NABCEP Certified PV Installation Professional
david.brear...@solarprofessional.com
Direct: 541.261.6545
Follow us on Twitter: @SolarPro
Check out
os or expertise you’d like to share, please contact me
directly via email:
david.brear...@solarprofessional.com
<mailto:david.brear...@solarprofessional.com>
Thanks!
David Brearley
Senior Technical Editor, SolarPro magazine
NABCEP Certified PV Installation Professional
circuits on the building within 10 seconds. Further, labeling must
clearly identify all of the initiation devices and all of the steps required to
complete rapid shutdown.
Here’s a link to the complete article: http://bit.ly/1xuDxx7
<http://bit.ly/1xuDxx7>
I hope this is of some assistance,
August,
Here's some additional info:
http://solarprofessional.com/articles/design-installation/fire-classification-for-roof-mounted-pv-systems?v=disable_pagination
Best regards,
David Brearley
Senior Technical Editor, SolarPro magazine
NABCEP Certified PV Installation Professional
david.
ystem in Yellow Springs, Ohio—on a coffee nerd
forum. I forget how the PV system came up, but the guy clearly has good taste
in espresso equipment and PV installers. Keep up the good work!
Best regards,
David Brearley
Senior Technical Editor, SolarPro magazine
NABCEP Certified PV Installati
want to use
a central inverter, it looks like you'll have to spend 2X as much money on your
source circuit combiners as you are now in order to meet these code
requirements.
David Brearley
Senior Technical Editor, SolarPro magazine
NABCEP Certified PV Installation Professional
david.brear...@so
e: 858-864-2821
> Office: 858-565-2284
> Fax: 858-565-2903
> Email: <>j...@toolup.com
Best regards,
David Brearley
Senior Technical Editor, SolarPro magazine
NABCEP Certified PV Installation Professional
david.brear...@solarprofessional.com
Direct: 541.261.6545
There are several SolarABCs reports that speak to this. For example:
http://bit.ly/1bD8wM7
The complete list of reports is found here:
http://www.solarabcs.org/current-issues/fire_class_rating.html
David Brearley
Senior Technical Editor, SolarPro magazine
NABCEP Certified PV Installation
http://www.solarabcs.org/current-issues/fire_class_rating.html
David Brearley
Senior Technical Editor, SolarPro magazine
NABCEP Certified PV Installation Professional
david.brear...@solarprofessional.com
Direct: 541.261.6545
On Feb 6, 2014, at 12:20 PM, re-wrenches-requ...@lists.re-wrenches.org wrote:
&
photo, under the text "Inside this
Article." It is the Kern County Administration Building case study.)
We also profiled a Solar Service project on a parking garage in Illinois that
may be relevant:
http://bit.ly/1gabDd4
David Brearley
Senior Technical Editor, SolarPro magazine
NABC
Wrenches,
Matt Paiss is wanted to chime in here. He's a member of the Code-Making Panel
No. 4 Firefighter Safety Task Group, as well as SEIA's PV Industry Forum.
Since he can't post to the list, I am sharing his comments with the group:
> Drake,
>
> After reading your initial comments, I th
that coincide with Intersolar. Those
are very informative sessions. I think the sessions are even archived online at
solarancs.org.
David Brearley
Senior Technical Editor, SolarPro magazine
NABCEP Certified PV Installation Professional
david.brear...@solarprofessional.com
Direct: 541.261.6545
O
the exact reasons that
you touch on below.
Not sure if this link has been published on the Wrenches list or not, but it
provides some background on the topic:
http://www.youtube.com/watch?v=sUXShMZJorQ
David Brearley
Senior Technical Editor, SolarPro magazine
NABCEP Certified PV Installation
With regards to the second part of your question, Trina has a glass-on-glass PV
module:
http://www.trinasolar.com/us/product/PDG5.html
I suspect that the glass-on-glass module from SolarWorld is Class A fire rated
as well.
___
List sponsored by Home
ure Bill Brooks will chime in shortly and provide more clarity.
Best regards,
David Brearley
Senior Technical Editor, SolarPro magazine
NABCEP Certified PV Installation Professional
david.brear...@solarprofessional.com
Direct: 541.261.6545
___
Li
cheap compared to the
alternative.
Best regards,
David Brearley
Senior Technical Editor, SolarPro magazine
On Nov 11, 2013, at 1:02 PM, re-wrenches-requ...@lists.re-wrenches.org wrote:
>
> From: "William Miller"
> Subject: [RE-wrenches] House fire news
> Date: November 11
there are new labeling
requirements on the way.
If you're in the market for a new labeling solution, you might want to sign up
for one of these webinars. There are 2 or 3 more scheduled in the near future.
David Brearley
Senior Technical Editor, SolarPro magazine
NABCEP Certified PV Install
t;
>
>
> From: re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of David Brearley
> Sent: Monday, March 25, 2013 6:01 PM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] Cable tray
>
> Ouch. I promise I'm n
(12 in.) and secured at intervals not to exceed
> 1.4m (4.5’).
>
> I hope this helps. It is a very big deal.
>
> Bill.
>
>
>
> From: re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of David Brearley
&g
Ouch. I promise I'm not advocating for anything like that. What I may be
missing is the Code reference that says "no cable tray on roofs" or similar.
There is so much room for improvement in wire management practices, that being
able to use cable tray seems like a step forward. I understand som
Uses permitted. 392.10(B)(1) requires that single conductor cable in cable tray
be size 1/0 or larger.
Here's the deal, though. NEC 2014 will add "Service Entrance Cable: Types SE
and USE" to Table 392.10(A). It is not in that table now, which is why
inspectors turn to 392.10(B). That means tha
SMA is hosting a webinar on this product line on April 2nd:
http://www.sma-america.com/en_US/smasolaracademy/seminar-calendar/seminar-registration/seminars/sunny_boy_tl_us_series_eps_overview_live_webinar.html
On Mar 25, 2013, at 11:11 AM, Bob-O Schultze wrote:
> Hiya Nick,
> SMA is bringing out
+1 for Maui Software. It is really helpful for finding the
array-to-battery-to-generator capacity sweet spot. You can also use it to model
things like the impact of various generator start/stop triggers. If you have
monthly kWh meter readings for the site, you can build a daily average load
pro
hes-boun...@lists.re-wrenches.org] On Behalf Of David Brearley
> Sent: Friday, March 22, 2013 8:43 AM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] P1 micro performance
>
> Thanks for the clarification.
>
> FWIW: Flat topping is exactly what occurs. Inverter limiting clips the
Thanks for sharing the screen capture, Marco.
Interesting issues to think about here. This is actually prime clipping season
in many places (not sure about Hawaii) due to the cool weather. While there are
more sun-hours in the summer, the cell temperatures are often high enough that
you won't t
FWIW: I recently saw something similar at an installation in Central Texas that
uses a similar product. The cracking in the weatherproof coating was highly
localized, affecting ±8 out of ±48 modules. The affected modules differed from
the others only in terms of the amount of reflected light inc
It is confusing that they refer to this as a "light soaking" effect. When we
worked on this thin film article in SolarPro magazine a couple years ago, a
researcher at NREL referred to this specific phenomenon as a "dark soaking"
effect (see discussion under "Performance Transients"):
http://sol
Hi Carl,
Check out the sidebar by Stephen Kane in this article for info on a couple
"squirrel guard" product suppliers:
http://solarprofessional.com/article/?file=SP6_2_pg30_Jacoby
I do think that the same system can serve both purposes. Once the screen is in
place it should be self-evident wh
I assume the device just operates the module away its MPP. That would reduce
its power output.
On Jan 29, 2013, at 8:48 AM, Larry Crutcher, Starlight Solar Power Systems
wrote:
> Nick,
>
> You said "the microinverter only draws enough current..." Could you explain
> how this works? I primar
Someone earlier suggested contacting Solmetric in Sebastapol:
http://www.solmetric.com/contact-us.html
Their PVA I-V curve tracer is a great troubleshooting tool, and they also carry
a Megger MIT 430 insulation tester:
http://www.solmetric.com/megger-mit430.html
Maybe they have a kit (PVA + Me
Let us know what the megohmmeter says. FWIW: There is some precedent for
premature product failure in a roof-integrated product manufactured by Energy
Conversion Devices (Uni-Solar):
http://www.utsandiego.com/news/2012/sep/14/tp-flawed-solar-panels-removed-at-schools/?print&page=all
On Nov 27,
+1. John Wiles is awesome—and he would never mistake PV source or array
circuits for a service. Not only are PV power circuits not a service, but PV
systems (inverter output circuits) are not a service. The NEC defines all of
this as power production equipment (705.2).
By definition a service
Sorry, per the OP this appears in 690.31(E)...
On Nov 3, 2012, at 11:19 AM, David Brearley wrote:
> FWIW: In the 2011 Code, Section 690.31(D) is changed to include the following:
>
> "Where dc photovoltaic source or output circuits…are run inside a building or
> restructu
FWIW: In the 2011 Code, Section 690.31(D) is changed to include the following:
"Where dc photovoltaic source or output circuits…are run inside a building or
restructure, they shall be contained in metal raceways,Type MC metal-clad cable
that complies with 250.118(10), or metal enclosures…"
On
s this.
Have any wrenches here actually had an inspector required dc AFCI? Also, is the
dc AFCI test standard actually finalized and adopted at this point or are
companies testing to a draft standard?
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Insta
If this is simply a Code consideration, then the NEC does not require a
visible/lockable disconnect. You can refer to this SolarABCs document for a
thorough discussion of the subject:
http://www.solarabcs.org/about/publications/reports/ued/pdfs/ABCS-05_studyreport.pdf
On Oct 2, 2012, at 5:21 P
Jason,
You might also check out SunPower's ac modules:
http://us.sunpowercorp.com/homes/products-services/solar-panels/AC-home-solar-panel/
On Sep 26, 2012, at 5:49 PM, Sequoya Cross wrote:
> I haven’t seen a full compatibility list on the new SMA-240US. At this point
> technical downloads
Steve,
Have you checked out SolarNexus?
http://www.solarnexus.com/
As I understand it, their goal is to provide all of the functionality you
describe in a single platform.
Best regards,
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer ™
david.brear
Here's a link:
http://us.sunpowercorp.com/commercial/products-services/rooftop-solar-systems/T5/
On Aug 31, 2012, at 11:13 PM, benn kilburn wrote:
> Ray,
> Are those the BIPV ones?
> Can you provide a model or a link?
> Thanks,
> Benn
>
> DayStar Renewable Energy Inc.
> www.daystarsolar.ca *
table!
>
> On 2012/8/30 16:47, David Brearley wrote:
>> I'm assuming it's a balanced 3-phase interconnection, which fits with the
>> reported phase current of 42 A:
>>
>> (3 x 5000 W) / 208 V / 1.73 = 41.7 A
>>
>> Or more simply:
>>
>>
I'm assuming it's a balanced 3-phase interconnection, which fits with the
reported phase current of 42 A:
(3 x 5000 W) / 208 V / 1.73 = 41.7 A
Or more 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,
;cfgid=1073741824&version=versionless&parent_id=1073988940&sequence=1
>>
>> The GuideInfo for Grounding & Bonding Equipment lists:
>> Grounding and Bonding for Photovoltaic (PV) Systems — Grounding and bonding
>> equipment intended for use in PV systems are
Off the top of my head...Power-One?
You can download an Excel file with comprehensive string inverter specs here:
http://solarprofessional.com/webexclusive/
On Aug 27, 2012, at 4:06 PM, William Miller wrote:
> Friends:
>
> We have a client that wants to divest of 8 Fronius LG-4500 LV inverte
utdoor use. It's always good to
> double-check, of course.
>
> Jason Szumlanski
> Fafco Solar
>
>
>
> On Mon, Aug 27, 2012 at 4:11 PM, David Brearley
> wrote:
> Some of the aluminum lugs are indoor-rated. They have a set screw will rust
> in an outdoor environ
Some of the aluminum lugs are indoor-rated. They have a set screw will rust in
an outdoor environment. That's one of the classic John Wiles slides. I'd just
watch out for that
On Aug 27, 2012, at 3:04 PM, Jay Peltz wrote:
> Hi Brian
>
> Isn't another way to go:
> Use the AL lugs and AL gro
Eric,
These two SolarPro magazine articles may be relevant to your troubleshooting
efforts:
http://solarprofessional.com/article/?file=SP2_6_pg34_Gleason
http://solarprofessional.com/article/?file=SP2_2_pg16_QandA_3&search=
Best regards,
David Brearley, Senior Technical Editor
Sola
SolarPro magazine's module specifications tables. The excel versions are on our
website under the Web extras" tab, which is found via the "magazine" pull down
menu. We have temp coefficients for both Voc and Pmp. You can use the
coefficient of Pmp in place of Vmp since temperature has little eff
ative
> funding, too.
>
> If you are really interested in eliminating the "irresponsible, fly-by-night,
> subsidy chasers" one easy way may be to eliminate the subsidy.
> Bill Loesch
> Solar 1 - Saint Louis Solar
>
>
> On 04-Jul-12 10:07 AM, David Brearley w
Presumably most solar contractors benefit from increased sales due to the
availability of a 30% federal tax credit. Arguably, that's not the same thing
as "receiving public funds," but the net effect is the same. My point is simply
that as an industry we are dependent upon public support and a v
In some cases, you can install blocking to get up on the ridge consistently.
One alternative to hangar bolts is to use corrugated mounting bridges from DPW
Solar or something similar from another company.
Sorry I can't link to the PDF. Google: "corrugated mounting bridges"
Since exposed-fastene
nce your mind seems to be made
up, Todd, that question is addressed to List at large.)
Happy Independence Day,
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer ™
david.brear...@solarprofessional.com
Direct: 541.261.6545
On Jul 3, 2012, at 10:37 PM, toddc.
a possible construction negligence claim.
Drive straight,
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer ™
david.brear...@solarprofessional.com
Direct: 541.261.6545
On Jul 3, 2012, at 4:11 PM, Garrison Riegel wrote:
> The EcoFasten GF1 flashing is easy
intentioned colleagues.
That¹s my experience and my 2 cents,
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
On 6/2/12 9:34 AM, "William Miller" wrote:
> Colleagues:
>
> I have been debating in my own mind the merits and demer
s.org
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of David Brearley
> Sent: Thursday, March 29, 2012 8:25 AM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] WOW Something Gone Very Wrong
>
> Perfect example of why it¹s a good idea to start designing and deploying
:
http://solarprofessional.com/article/?file=SP4_3_pg14_QA_2&search= (Bill
Brooks article on Fuse Servicing disconnect requirements)
http://solarprofessional.com/article/?file=SP4_3_pg64_Hren&search= (Changes
to Code in 2011; See content under ³690.6, Fuses² subheading)
David Brearley
settings:
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>
>> List-Archive:
>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>
>> List rules& etiquette:
>> www.re-wrenches.org/etiquette.htm
>>
gt;> <http://www.re-wrenches.org/etiquette.htm>
>>>>>>
>>>>>>
>>>>>>
>>>>>> Check out participant bios:
>>>>>>
>>>>>> www.members.re-wrenches.org <http://www
VERY small, as seem in the Isc values.)
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
david.brear...@solarprofessional.com
Direct: 541.261.6545
On 11/30/11 12:18 AM, "Ray Walters" wrote:
>I pulled the voltage temp coefficient off
about the distinction between the two possible
interpretations.
David Brearley, Senior Technical Editor
SolarPro magazine
On 9/29/11 1:50 PM, "Mark Frye" wrote:
> OK, this subject has come up before and this is a gray area in the Code. What
> is the definition of "the ou
ither my code book is an
> incomplete printing or perhaps John Wiles was referring to a 1987 proposal
> that didn't make it into the code until the 1990 NEC.
>
> Regards,
> -Hans
>
>
> From: re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@l
the HP archives. If not, it is summarized above.
Best,
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
david.brear...@solarprofessional.com
Direct: 541.261.6545
On 7/19/11 2:19 PM, "Hans Frederickson" wrote:
> Kent,
> I'm not a geeze
Eric,
Marvin Hamon, a PE in CA, wrote an article for SolarPro magazine on this
topic that may be of assistance:
http://solarprofessional.com/article/?file=SP3_1_pg66_Hamon&search=
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
david.b
type
diagrams that may be helpful:
http://solarprofessional.com/article/?file=SP1_1_pg32_Berdner
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
david.brear...@solarprofessional.com
Direct: 541.261.6545
On 4/7/11 11:06 PM, "Aladdin Solar" wrot
om Wiles that may help.
> http://www.fafcosolar.com/download/409/690%2064%28B%29%282%29TECH-1.pdf
>
> It¹s still my contention that the conductors need to be sized for 150A in this
> example, unless an exception is made by the AHJ. If David Brearley¹s post
> about Wiles¹ clarificatio
ze these.
Hope that¹s cleared than mud,
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
david.brear...@solarprofessional.com
Direct: 541.261.6545
On 3/30/11 11:12 AM, "Kent Osterberg" wrote:
> Jason,
>
> Now you are opening up a
_
>> List sponsored by Home Power magazine
>>
>> List Address: RE-wrenches@lists.re-wrenches.org
>> <http://RE-wrenches@lists.re-wrenches.org>
>>
>> Options & settings:
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-
>> 780-906-7807
>> HAVE A SUNNY DAY
>
>
> ___
> List sponsored by Home Power magazine
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Options & settings:
> http://lists.re-wrenches.org/options.cgi/re-wre
ess: RE-wrenches@lists.re-wrenches.org
>
> Options & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive:
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> www.re-wre
for the rant,
David Brearley
On 2/8/11 2:04 PM, "hol...@sbcglobal.net" wrote:
>
> My electrician was out of pocket, so I hired a master electrician with NABCEP
> citification from a highly reputable company to complete a battery based
> system for me with the expectat
shingles installed on a north facing roof without
enough modules in series to actually reach the inverter start voltage. At
least it didn¹t blow away or fall off the roof!)
David Brearley, Senior Technical Editor
SolarPro magazine
On 1/28/11 11:57 AM, "Keith Cronin" wrote:
hich
can be used for even more conservative voltage or ampacity calculations.²
I realize you are talking about a different set of calculations, but the
rationale for which data to use may still apply.
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
david.b
minute averages than in
> the 10-second data. Inspect the graph and label which you think is 10-second
> data and which you think is 1-minute data. Then compare to the original. The
> two graphs appear to be mislabeled.
>
> Kent Osterberg
> Blue Mountain Solar, Inc.
>
>
>
per square
> meter are fleeting and disappear in hourly averages. Such occurrences are
> also masked to a small extent by 1-minute averages.
>
> Kent Osterberg
> Blue Mountain Solar, Inc.
>
>
>
> David Brearley wrote:
>> Re: [RE-wrenches] Inverter oversizing This
This reminds me of a scholarly article I came across about a year ago while
doing some research. Here¹s a link to it if anyone is interested:
www.lepten.ufsc.br/publicacoes/solar/eventos/2005/PSC/burger_ruther.pdf
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV
s title,
"Understanding NEC Requirements for Photovoltaic Systems."
Looking forward to getting my hands on a copy,
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
david.brear...@solarprofessional.com
Direct: 541.261.6545
On 1/13/11 10:35
ist Address: RE-wrenches@lists.re-wrenches.org
>
> Options & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive:
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
&
:
http://solarprofessional.com/article/?file=SP3_1_pg66_Hamon&search=
Best regards,
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
On 12/7/10 8:47 AM, "Glenn Burt" wrote:
> Al,
>
> SMA has a good whitepaper on their site c
Drake,
Chris Freitas wrote an article on this topic in SP1.1, ³Form 12S Metering
for Grid-Tied Systems w/ Battery Backup.² Here¹s a link to the article and a
wiring diagram:
http://solarprofessional.com/article/?file=SP1_1_pg16_QandA_3&search=
David Brearley, Senior Technical Editor
Sola
.7131
> NABCEP Certified PV Installer
> WA Electrical Administrator
>
>
> On Aug 1, 2010, at 8:24 AM, David Brearley wrote:
>
>> Kelly,
>>
>> When I came across language like this in an RFP, my assumption was that we
>> needed to work with a specialty ligh
. They should be able to tell you
what will work best, based on the general project description and your
specific equipment grounding scheme.
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
david.brear...@solarprofessional.com
On 7/31/10 3:28 PM, "
Peter,
You can address the inspector's first complaint by pointing to the new
language (NEC 2008) in 690.64(B)(2):
"In systems with panelboards connected in series, the rating of the first
overcurrent protection device directly connected to the output of a
utility-interactive inverter(s) shall b
Mick,
THWN-2 is 90°C rated per Table 310.16. This is key for conductors in conduit
on a roof. On a roof in full sun ambient temperatures are such that a 75°C
rated conductor will have a severely diminished allowable ampacity, if any
allowable ampacity.
Jollily,
David
On 7/23/10 11:52 AM, "Mick
local
supplier can¹t confirm this cross-listing for you, I¹d try tracing back to
ask their supplier or the manufacturer.
David Brearley, Senior Technical Editor
SolarPro magazine
On 7/23/10 12:52 AM, "Marco Mangelsdorf" wrote:
> Finding that wire in these here parts is pretty mu
=SP3_2_pg92_Projects_1&search=
David Brearley, Senior Technical Editor
SolarPro magazine
On 6/11/10 2:50 PM, "Nick Soleil" wrote:
> Did you notice that in my calculation I divided the total amperage by 2 to get
> the average ampacity across the string. This seems to be the best way
s existing module clients.
Motech has been a supplier of solar cells to GE Energy for the past four
years."
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
On 6/8/10 10:13 AM, "Carl Hansen" wrote:
> I have a warrantee issue with an Astropo
process will better serve everyone in the
long run.
Best,
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
On 6/3/10 8:57 AM, "Jason Szumlanski" wrote:
> Hi Wrenches,
>
> Has anyone dealt with a jurisdiction that requires FSEC or sim
SEIA has an official insurance broker:
www.kessleradvisors.com/contentnt.aspx?id=212
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
david.brear...@solarprofessional.com
Direct: 541.261.6545
>
> On 4/20/10 4:35 PM, "Marco Mangelsdorf"
SEIA has on offician insurance broker:
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
david.brear...@solarprofessional.com
Direct: 541.261.6545
On 4/20/10 4:35 PM, "Marco Mangelsdorf" wrote:
> I¹m in search for an insurance co.
question below can’t be answered using PVWatts, it can be
answered using the Solar Advisor Model (SAM), which was developed by NREL
and Sandia w/ DOE funding. SAM is available for free download here:
www.nrel.gov/analysis/sam/
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified
e Power magazine
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Options & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive:
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> Lis
y from 2009 or the last couple of months?
>
>
>
>
> On Wed, Mar 3, 2010 at 10:52 AM, David Brearley
> wrote:
>> Look for a super comprehensive article on the topic of production modeling in
>> the Apr/May issue of SolarPro (SP3.3) by Tarn Yates and Bradley Hibber
/pubs/redbook/
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
david.brear...@solarprofessional.com
On 3/3/10 9:35 AM, "Andrew Truitt" wrote:
>
> Is anyone aware of a resource for finding local historical irradiance data?
> We
ly as simple and balanced as they think it is. If one phase
always (or usually) has a higher current than the others, you may be able to
use your load reduction appliance to improve an existing phase imbalance.
Hope this helps.
Best regards,
David Brearley, Senior Technical Editor
SolarPro maga
Jay,
You might want to consider a multi-purpose tool:
http://solarprofessional.com/article/?file=SP2_3_pg20_TheWire_5&search=
Best, David
On 2/13/10 4:57 PM, "jay peltz" wrote:
> I'm in the market for a Tyco connector tool .
>
>
> (I already have the MC tool)
>
> Any recommendations ?
>
Is it a Form 12-S meter? If not, that¹s the reason its not working. Here¹s
an article you can refer to:
http://solarprofessional.com/article/?file=SP1_1_pg16_QandA_3&search=
David Brearley, Senior Technical Editor
SolarPro magazine
NABCEP Certified PV Installer
david.b
give him the benefit of the doubt.
>
> I still use my basic rule similar to the rule for politicianshow do you know
> if a marketing guy is lying?== his lips are moving.
>
> Bill.
>
>
> From: re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lis
approved by a testing lab such as UL.
>
> Kent Osterberg
> Blue Mountain Solar, Inc.
>
>
> David Brearley wrote:
>> Re: [RE-wrenches] Square D DC disconnects Thanks, Bill.
>>
>> Glad to hear you think the HU series is still a good option.
>>
>&
e of the
> Eaton rep. The Eaton product was not properly rated or listed for the voltage
> while the Square D product was. This is the insanity that needs to stop.
>
> Bill.
>
>
>
> From: re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lists.re-
(Unless, of course, you are working with a transformerless inverter and an
ungrounded array, in which case both the positive and negative conductors
would need to be switched, since both are ungrounded.)
On 1/10/10 9:10 AM, "Drake Chamberlin"
wrote:
> At 05:14 PM 1/9/2010, you wrote:
>> I recen
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