Unbalanced current is what is *measured* in a GCFI. And also, it is the unbalanced current that is the cause and the voltage droop is an after effect. Bob
From: Roland [mailto:e...@msn.com] Sent: Wednesday, October 07, 2015 2:07 AM To: Robert Bruninga; Electric Vehicle Discussion List; David Nelson Subject: Re: [EVDL] OEM EV charging on 120V with no ground? Current is the effect, voltage is the cause. Current cannot flow without voltage. If you have a leakage of the current or another parallel path, the voltage will drop causing increase ampere, there will be a differential of ampere and voltage, thus different current effects. You can either use a voltage relay or a current relay that detects the under voltage or over current of circuits which can disconnect the circuit. We normally use program devices on large transformers installation that detects phase loss and current faults. Roland ----- Original Message ----- From: Robert Bruninga via EV To: David Nelson ; Electric Vehicle Discussion List Sent: Tuesday, October 06, 2015 8:04 PM Subject: Re: [EVDL] OEM EV charging on 120V with no ground? Correction: > If either the Line Wire (Hot) or a color conductor which will be black, red > > or blue has voltage that is different then the Neutral Wire (White), the > the > > GFI will detect this unbalance and will open up the circuit. > No, it is not voltage it is current. If the current is not identical in both conductors, then there is a 3rd leakage path which might be your body, so it trips. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20151006/d8b764 27/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
