[RE-wrenches] Outback Gen starting case study

Colleagues: I had posted earlier that I was having problems reliably starting a particular generator using an Outback Mate. My resolve was to determine conclusively if the Outback mate was at fault or if I could trust it in the future. I installed a data monitoring system to check battery vo

Re: [RE-wrenches] Inspectors on ladders and roofs

Keith, Here in rural Mendocino & Sonoma county, our inspectors love to climb on the roof, and look at everything. I've opened combiner boxes, explained WEEBS, talked about sub-structure in the roof, etc. I always get to the job early on inspection day, and set up a ladder in an easy to climb locati

Re: [RE-wrenches] 120 volt grid tie inverter

Has anyone tried string sizing 60 cell modules to an SMA 700. It is not possible. David Katz Founder & CTO AEE Solar T(707) 825-1200 C(831) 325-9582 F(707) 825-1202 dk...@aeesolar.com www.aeesolar.com On 11/15/2010 5:29 PM, Glenn B

[RE-wrenches] Inspectors on ladders and roofs

Wrenches Today, when I ran into one of our electrical inspectors, we had a discussion about having the ability to have thorough inspections for solar. In our jurisdictional, they are not allowed/required to go on to the roof. So, how do they ever get to see all of the grounding and mounting

Re: [RE-wrenches] 120 volt grid tie inverter

Agreed, Glenn~ and that SMA unit has a nice low input voltage requirement. Bob, might your client be wanting a "grid intertie capable" inverter which can run on a 120 volt battery bank--the medium voltage battery system which Chad Lampkin had championed? If so, it's game over for several reasons,

Re: [RE-wrenches] String Level Monitoring in Combiners

Hi Matt: If it were inexpensive and reliable, then it would be a good thing. Until it is, the clamp-on meter works for me. This ties into the conversations about burned up modules, which I frequently see on projects that I service. I find that most of the module failures occur due

Re: [RE-wrenches] 120 volt grid tie inverter

Bob, Do you mean they have a nominal 120 Vdc input? Or do you mean that they want a 120 Vac (RMS) output? If the former, what output voltage do you want? If the latter, what is their nominal dc input voltage (better yet the range of DC input voltages over a range of typical temperatures and irradi

Re: [RE-wrenches] 120 volt grid tie inverter

I think there is still an SMA 700W inverter available that uses 120VAC. -Glenn -Original Message- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Bob Ellison Sent: Monday, November 15, 2010 11:14 AM To: RE-wrenches Subject: [R

Re: [RE-wrenches] 120 volt grid tie inverter

Hi, I don't know if you mean "120 volt nominal" or 120 volt peak power voltage, but assuming the latter: * Consider the PV Powered 2000 watt unit. Operating range begins at 114 volts DC which is still borderline, OR: * Enphase if the volts & amps happen to work out with serendipity, OR: * Aurora

[RE-wrenches] 120 volt grid tie inverter

I have a customer who wants to grid tie a 120 volt dc system Does anyone know of an inverter that can do this? Thanks Bob ellison > ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http:/

Re: [RE-wrenches] Head Spinning..(Con) fused.

Eric, Your concern over shorting the current carrying conductors to a single conductor would require multiple faults-not that this is impossible-but we generally are not required to design for it. Squirrels would probably be the most likely way to cause such an event. Since all four strings

[RE-wrenches] String Level Monitoring in Combiners

Hola Wrenches, The topic of string level monitoring keeps coming up in my circles. Personally, i think it's dumb in most non-R&D applications. Dumb is actually a little weak for how i really feel about it, but that's the word i'll use today. For the purpose of keeping it straight, i'm talking abo

Re: [RE-wrenches] eternabond or epdm?

Hi Mark, Having learned of Eternabond on this list, we've since used the doublestick version on two, raised rib type metal roofs. Of course, it's way too early to tell how it will perform over time, but we were quite impressed during installation. It's ferociously sticky. You'll want to place

[RE-wrenches] eternabond or epdm?

Wrenches, It has been a while since I have seen this subject and I was wondering if there has been more experience in the field with using either EPDM or products such as http://www.eternabond.com/DoubleStick-p/cr-ds.htm for sealing L-feet or stand-offs directly to metal roofing. . . Seems to mak