The interesting thing about a GFI is that it doesn't actually need a ground to do its thing. It senses an imbalance in current between hot and neutral, or for a 240v GFI, between the hot legs and/or neutral.
If any portion of the current drawn from a hot leg isn't balanced by a return via the other hot or neutral, it assumes that the errant current is going to ground. Since this could be happening via a person, with the possibility of shock or electrocution, it trips. Apart from tripping a GFI, the hazard in using equipment ground for a neutral is that if the equipment ground bonding at the main panel should be loose or damaged, the entire building's equipment ground wiring is energized - and so is the frame of any appliance connected to that ground. That's not good. So don't use ground as a neutral substitute, even without a GFI present. Couldn't you solve your RV problem with an isolation transformer? You could also potentially use the same transformer to derive 120v for conversion EV charging. David Roden, EVDL moderator & general lackey To reach me, don't reply to this message; I won't get it. Use my offlist address here : http://evdl.org/help/index.html#supt = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = If you made a column of things you're pretty sure you know, and then made another column of how you know those things, most of that column is like: "Some guy told me." It's just clickbait and hearsay. Goes into the head, locks onto a feeling, you're like: "That sounds good. I'm gonna tell other people that." And that's how brand marketing works, and also fascism, we're finding. -- Marc Maron = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ Address messages to [email protected] No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
