Re: [RE-wrenches] Enphase M190 source?

2011-09-29 Thread Howie Michaelson
Hey Dave, We have 4 of these left over from a job earlier in the year. Do you still have need for these? Sorry for the delayed response. Hope you are well, Howie -- Howie Michaelson NABCEP Certified Solar PV Installer™ Catamount Solar, LLC Renewable Energy Systems Sales and Service VT Solar E

Re: [RE-wrenches] GNB Battery Contact

2011-09-29 Thread Philip Boutelle
Mac, Try Paul Mattaliano , paul.mattali...@exide.com. When I asked him about using two parallel strings of that same 100A33 battery configuration at 48V, he told me this: "C100 rating of 100G33 is 2100 so 2 parallel strings is 4200. 5%=210A. Since their 300A charging current exceeds 5%, recommend

[RE-wrenches] GNB Battery Contact

2011-09-29 Thread mac Lewis
Hello wrenches, Does anyone have a good technical contact at GNB? Specifically, I am looking for good charging setpoints for the Absolyte IIP Type 100A33. Oddly, on all the spec sheets I've found they call this a 6V battery, however these are 2V batteries. Thanks -- Mac Lewis * "Yo solo

Re: [RE-wrenches] Home Depot solar?

2011-09-29 Thread Jesse Dahl
I just bid against them here in Northern MN. I saw BP modules, I had heard BP was leaving the residential market. Jesse Sent from my iPhone On Sep 29, 2011, at 10:48 AM, Andrew Truitt wrote: > HD hires local contractors to install their systems. I've worked for a > couple of quality-oriente

Re: [RE-wrenches] ground

2011-09-29 Thread dan
Seems to me you're in 250.52(A)3 land. I'd guess not likely.Dan BrownFoxfire Energy Corp.Renewable Energy Systems(802)-483-2564www.Foxfire-Energy.comNABCEP #092907-44 Original Message Subject: [RE-wrenches] ground From: toddc...@finestplanet.com Date: Thu, September 29, 2011 4:1

Re: [RE-wrenches] Adding on to existing PV System

2011-09-29 Thread David Brearley
Agreed. The intent of the change to 690.64(B) in NEC 2008 was not to restrict the use of a dedicated inverter aggregation subpanel for amp-shaving purposed (meaning the panel is being used to reduce the PV CB size ultimately used for 120% rule calculations). The intent was to clarify the that there

Re: [RE-wrenches] Adding on to existing PV System

2011-09-29 Thread Mark Frye
OK, this subject has come up before and this is a gray area in the Code. What is the definition of "the output of the inverters." I have sucessfully argued that the output of the inverters is the last point in the circuit where the circuit is free of premise load circuits. In this case it would b

Re: [RE-wrenches] ground

2011-09-29 Thread Kent Osterberg
See NEC 250.52. If there is 10 feet of pipe in the ground, that qualifies as a grounding electrode. The foundation rebar qualifies as a grounding electrode too, but it must have a length of at least 20 feet. If using multiple pieces to get 20 feet they must be bonded (or simply wired) together

Re: [RE-wrenches] Adding on to existing PV System

2011-09-29 Thread Jason Szumlanski
I understand what you are saying about the 40A breaker, but according to 690.64(B)(2), "...with panelboards connected in series, the rating of the *first* overcurrent device connected *directly* to the output of the inverters shall be used in the calculations for *all* busbars and conductors." The

Re: [RE-wrenches] Adding on to existing PV System

2011-09-29 Thread Mark Frye
Jason: SB 5000 = 21A @ 240V, 21A x 1.25 = 26.3A needs 30A breaker M215 = 0.9 A @ 240V, 0.9A x 9 = 8.1 A, 8.1 x 1.25 = 10.1A needs 15A breaker. (Or that rounded to 10A and use a 10A breaker)? 26.3A + 10.1A = 36.4 A needs 40A breaker So, get a new 100A main lug subpanel. Connect it to a 40A bre

[RE-wrenches] ground

2011-09-29 Thread toddcory
Does anyone know if it is ok to use the rebar in a pole mount foundation as a ufer ground? I need to ask the inspector too, but thought I'd ask here first. Todd Sent from Finest Planet WebMail. ___ List sponsored by Home Power magazine List Ad

Re: [RE-wrenches] Adding on to existing PV System

2011-09-29 Thread Jason Szumlanski
That's not a bad idea, except that 690.64(B)(2) requires that the breaker directly connected to each inverter(s) must be used for the calculation. I have an existing SB5000 with a 30A breaker and a new string of nine Enphase M215's requiring a 15A breaker. If you combine these in a 100A or high

Re: [RE-wrenches] Adding on to existing PV System

2011-09-29 Thread Jesse Dahl
Maybe you can put in a smaller main breaker? Jesse Sent from my iPhone On Sep 29, 2011, at 1:39 PM, "Glenn Burt" wrote: > How about feeding both systems into an AC combining subpanel before feeding > the main load center? > > Often the calculations required will allow you to do more backfee

Re: [RE-wrenches] Adding on to existing PV System

2011-09-29 Thread Glenn Burt
How about feeding both systems into an AC combining subpanel before feeding the main load center? Often the calculations required will allow you to do more backfeeding than the simple backfeeding a load center with individual breakers. -Glenn From: re-wrenches-boun...@lists.re-wrenches.org

Re: [RE-wrenches] Home Depot solar?

2011-09-29 Thread Andrew Truitt
HD hires local contractors to install their systems. I've worked for a couple of quality-oriented companies that have explored this relationship but both determined that the margins were just too thin. Andrew Truitt MSc, LEED GA Truitt Renewable Energy Consulting 202 486-7507 http://www.linkedin

Re: [RE-wrenches] Adding on to existing PV System

2011-09-29 Thread Max Balchowsky
Check the specs on the buss rating for that 200 amp panel. A lot of the 200 amp panels actually have a 225 amp rated buss   Max Balchowsky Design Engineer SEE Systems 1048 Irvine Ave Suite 217 Newport Beach, Ca. 92660 760-403-6810 From: Jason Szumlanski To:

Re: [RE-wrenches] Home Depot solar?

2011-09-29 Thread Max Balchowsky
We sold for Home Depot (actually through HD for Astropower in 2000- 2001 in the Palm Springs area. It lasted about a year before they started shopping install labor - then it fell apart with competitors slinging lowball prices to get the work.   Max Balchowsky Design Engineer SEE Systems 1048 Ir

Re: [RE-wrenches] Home Depot solar?

2011-09-29 Thread Joel Davidson
Solar Electrical Systems (SES) in Westlake Village California was a Home Depot installer for BP Solar systems for a few years. SES does excellent work. SES no longer installs BP Solar or Home Depot systems but occasionally replaces BP modules that fail on the systems that they installed. Joel

re-wrenches@lists.re-wrenches.org

2011-09-29 Thread Ray Walters
We have a few Kohler 20kw, 30 kw, and 40 kw units on big off grid stuff. Great machines, get about 5000 hours before they need work. 2 wire start, 1800 rpm water cooled. Ours had 4 to 6 cylinder Ford motors. I don't know what they use now, or if they've changed the line recently. I found over t

Re: [RE-wrenches] Home Depot solar?

2011-09-29 Thread wirewiz
Andrew, Koyaanisqatsi is also a great movie by Francis Ford Copolla. You should all see it. It's been awhile since I've seen it but if I remember correctly it's a Hopi Indian term meaning once we start digging from the earth, we're screwed beyond repair. Larry Liesner Design and Installations Ele

Re: [RE-wrenches] Home Depot solar?

2011-09-29 Thread Solar Energy Solutions
Home Depot IS selling PV in Portland Oregon through Solar City.    Seirrabuton Club is marketing PV to their members in Oregon.  They have chosen a single contractor for the entire state to install all of their member's systems.  Payola is $300.00/system installed.    Andrew Koyaanisqatsi Presi

re-wrenches@lists.re-wrenches.org

2011-09-29 Thread Jeff Clearwater
Fellow Wrenchers, What's folks favorite Propane Gen line in the 30 KW range for off-grid backup? SMA has limited exposure to larger generators for the SI for approval to their list. Anybody out there know which SI's in the 30 KW range that the SI likes? Thanks! jc -- Jeff Clearwater Villa

[RE-wrenches] Adding on to existing PV System

2011-09-29 Thread Jason Szumlanski
We've been contracted to add on to an existing PV system in a residence. The existing system has a 30A 2P Breaker on a 200A rated panel with a 200A main breaker. The new system would require a 15A breaker, which would exceed the limit in NEC 690.64(B)(2). The existing system has a fusible AC di

Re: [RE-wrenches] Home Depot solar?

2011-09-29 Thread Jason Szumlanski
We were recently asked to fix a royal mess by a SDHW installer contracted via Home Depot. Not fun. 60+ systems with various deficiencies. The installer was to blame, not HD. HD is not selling PV in our market (fortunately). Jason Szumlanski -Original Message- From: re-wrenches-boun...@l

[RE-wrenches] Home Depot solar?

2011-09-29 Thread Jesse Dahl
Anyone out there have any experience with Home Depot's solar installers? Jesse Sent from my iPhone ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/r