Originally Posted by gomotomoto
I noticed when it was at my house, it kept tripping my outdoor GFI outlet.
There are 4 typical causes.
1) Wet wiring in the outdoor convenience outlet on the trailer. Solution is to disconnect shore power, remove the outlet cover, and dry with a hair dryer. (Rarely, other wet wiring due to condensation)
2) Miswired breaker box. Common problem on older trailers and ones with recent wiring changes. RVs require the neutral (white) and ground (green or bare) wires to be kept separate with no bonding between them. Sometimes the fix is just a matter of removing a bonding screw, other times a ground bar has to be added.
3) Short between neutral and ground, usually at the air conditioner, but not always. Sometimes a visual check of the wiring at the air conditioner will show an obvious probelm. Otherwise, difficult to diagnose, with shore power disconnected and all the breakers off each of the neutral wires has to be disconnected one at a time from the bus and checked with an ohmmeter for continuity to ground.
4) Failed MOVs in a surge protector, either a plug in one, or the surge protection built into the converter or some piece of electronics. Easiest thing to do is unplug all this stuff and see if the problem goes away.
Common problem, good luck.