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] 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

Re: [RE-wrenches] Inverter back feed liability

Gary: Here in the North Texas area, for the Oncor TDSP (Transmission and Distribution Service Provider), an 8-page Interconnection Agreement (IA) is required before a DG (distributed generation) system can become grid-interactive. The Oncor IA is a legal

Re: [RE-wrenches] Inverter back feed liability

OMG!…I thought I was the only one that had to deal with those experts. My favorite was a fellow leaned over the counter and announced to me that he was retired from NASA. Well, guess I better pad my estimate by 25%. Good one, Hilton. On Nov 23, 2015, at 4:59 PM, Hilton Dier

Re: [RE-wrenches] Inverter back feed liability

As long as the inverter carries a UL listing, it is the manufacturer's liability. On Sun, Nov 22, 2015 at 6:10 PM, wrote: > worst case scenario, a battery based inverter system trying to power the > grid would immediately shutdown on overload as the "infinite load" of

Re: [RE-wrenches] Inverter back feed liability

Subject: Re: [RE-wrenches] Inverter back feed liability As long as the inverter carries a UL listing, it is the manufacturer's liability. On Sun, Nov 22, 2015 at 6:10 PM, <toddc...@finestplanet.com> wrote: worst case scenario, a battery based inverter system trying to power the grid

[RE-wrenches] Inverter back feed liability

Hello Wrenches, I have an electrical engineer customer that asked me a "what if" that I had not heard before. If an inverter somehow back feeds the grid during an outage and damages something or hurts someone who is liable? -- Gary Easton Appalachian Renewable Power Stewart, Ohio 45778 NABCEP

Re: [RE-wrenches] Inverter back feed liability

worst case scenario, a battery based inverter system trying to power the grid would immediately shutdown on overload as the "infinite load" of the grid would look like a dead short. also, all utility workers treat lines as "live" and routinely short out feeders before working on them... so

Re: [RE-wrenches] Inverter back feed liability

That was basically my reply and we're not even talking about battery back up inverters only direct grid tie. He just persisted with the what if. Is it actually "impossible" for a direct grid tied inverter to back feed any voltage to a dead grid ? On Sunday, November 22, 2015,