Forum Discussion

BFL13's avatar
BFL13
Explorer II
Mar 22, 2015

GFCI Risks? Update

Updated 24 March
------------

Having a new GFCI problem I have been unable to locate in the "receptacle circuit".

While on shore power (from house) The GFCI receptacle on that string itself had power, showing two lights on the tester as "normal", but the GFCI was popped and would not reset. The rest of the receptacles all dead.

The other 120v circuits in the trailer, including the GFCI "galley" receptacle on its own cicuit are ok.

Swapped over to inverter with shore power plugged into that, and now the receptacle circuit is fine and the GFCI button can be reset so everything seems ok. Back to shore power and not ok.

To get a quick fix, I took out the GFCI receptacle and replaced it with an ordinary one, so now everything seems ok even when plugged into the house.

However, whatever was causing that GFCI to pop is still there of course. I checked for that by plugging the trailer into the house bathroom GFCI receptacle and it popped.

So just what is the risk here? If I don't plug into a shore power GFCI receptacle, I would never know, and when off-grid on inverter I would never know.

Hunting for that GFCI would take hours and hours taking out each receptacle I guess, since the usual swapping things around didn't find it. So until I get that ambitious, should I care?

Thanks

43 Replies

  • I think, in simple terms, the GFCI detects differences in current between conductors ... if there's more current flowing out than coming back, there's a potential "ground fault"... meaning current has found a return path to "earth" that bypasses the correct return path (the neutral and ground conductors).

    In terms of human safety, this is because someone has contacted an energized appliance and a water source (IE hair drier in the bathtub)

    You could have a failed appliance somewhere on the circuit, that is leaking current into the RV frame or your inverter could be miswired (neutral bonding for example). It could be as simple as a loose connection inside an outlet, an open neutral for example.
  • Change or replace the gfci.Just had one go bad in the condo.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,273 PostsLatest Activity: Jun 22, 2025