Re: [RE-wrenches] Inverter back feed liability

Hi drake, My follow up question would be, how many inverters are there up and running at this point? Jay > On Nov 24, 2015, at 6:34 AM, Drake > wrote: > > Is there any any recorded case to date of a UL 1741 inverter backfeeding the > grid and

Re: [RE-wrenches] Odd battery problem - very low SG in only one cell

Thanks everyone for the replies and ideas both on and off list. Based on your input, next week when the system is in Float I plan to have the class isolate the faulty battery and measure voltage, let it rest for a couple days, then load test at about C/10. Predicted result is that it will show

Re: [RE-wrenches] Odd battery problem - very low SG in only one cell

Having one cell die seems to be an emerging pattern. At 09:49 AM 11/22/2015, you wrote: Esteemed Wrenches; I'm looking for input on what could be going on with a battery bank at the college I teach for. It's a stand-alone system with 4 Trojan 12v T-1275 in series / parallel for 24v, 660w

Re: [RE-wrenches] Inverter back feed liability

Is there any any recorded case to date of a UL 1741 inverter backfeeding the grid and causing harm? At 05:27 PM 11/23/2015, you wrote: Gary: Here in the North Texas area, for the Oncor TDSP (Transmission and Distribution Service Provider), an 8-page Interconnection Agreement (IA) is

Re: [RE-wrenches] Inverter back feed liability

Hahaha. Here in Florida where everyone is a retired something, everyone is an engineer, doctor, or lawyer, or they slept at a Holiday Inn Express last night. On a serious note, the way I usually handle engineers is to ask their particular area of work. Understanding whether they are focused on

Re: [RE-wrenches] Inverter back feed liability

Hilton, Would not an appropriate (and respectful) rejoinder be, "Why are you coming to me?" Your experience and expertise beyond Physics 101 may be primary driving reasons. A long time ago, I think it was Dave P. who shared he talked to a potential customer for a half hour for free, after