todintexas wrote:
Interesting, thank you, I'll need to look into it further this evening. When plugged into shore power, the moment you plug the fridge in it kicks the GFCI at the pole. On one occasion, it kicked the GFCI both in the coach and at the pole simultaneously. It was running correctly on the genset, but only for a short time. I'll check polarity, leave it run for a while on the genset, then pursue the troubleshooting avenue suggested. I see where the 30 amp shore power plug has been replaced,just the plug and not the cord, I assume that any bleed through inside that repair could cause this also?
It is not at all likely that the plug could cause what you're seeing, as the ground fault would exist whether or not the fridge is in use. I'd say it's impossible, but I've learned to avoid using that word when analyzing problems...but practically speaking, it's not possible to match what you're seeing.
A GFCI compares the current flowing through the hot wire with the current returning through the neutral wire. If they are not exactly balanced, it trips, as the excess current is flowing through some other path. If there were a fault in the replacement plug, any electrical use in the RV at all would cause the GFCI to trip--and sometimes that would not even be required, depending on the GFCI and the exact nature of the fault. The camper GFCI would not trip, however, as from its point of view the currents would be balanced.
