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...
If everything is ok with the microwave unplugged then the problem is an internal one with the microwave. Trips as soon as you plug it in, or, as soon as you turn the micro on? Not unusual. Common with blow dryers plugged into bathroom GFI. One blow dryer trips another won't.
Plug something else in the micro outlet and see what happens or if you have another microwave plug that in.