GFCI and an Open Ground
Given: A 120 VAC GFCI supplying power to a 30 AMP RV. The RV has one problem, the 3rd Prong Ground wire at the 30 AMP plug is not making connection. (The RV chassis is floating because there are no ot...
Forum Discussion
nebster wrote:
So here's a follow-up question to confirm something I have been presuming for a while:
If the RV is powered via a line+neutral shore cord, with no EGC, and an inline GFI is provided in the shore cord... is a hot chassis event with a human inadvertently providing a low impedance path to earth ground something that the GFI will (should) protect against?
Yes.
Any time current is flowing unequally in the neutral and hot wires, it will trip. If the human is providing at least some of the ground conductor, the current in neutral wire is reduced but the hot remains the same.
This is consistent with those who have said a GFCI works in an old house with a 2-wire system.
