I have a 2006 Crossroads Cruise 5th wheel. I have a GFCI that is tripping and killing the circuit. The breaker does not trip and the fuse does not blow. I changed the GFCI and I get the same result. A...
Is this an inside GFCI or an outdoor one? I've had an outside one do something similar if it had been raining or if the trailer had recently been washed. It was water getting into the receptacle. Try unplugging everything that is plugged in downstream of the GFCI receptacle and reconnecting one item at a time to try to narrow it down.