We have just brought home (new to us) a 2015 Cruiser Aire fifth wheel. Plugged it into our outside 20A outlet and it trips the GFCI. I have isolated the problem to the 15A microwave circuit. I have u...
It is most likely in the wiring between the microwave breaker and outlet; or, at the outlet itself. It could be the black (hot) wire touching the ground. It could also (more likely) be the white (neutral) wire touching ground. Either will cause the GFCI to trip.