I have a 2007 Rockwood Travel Trailer. I can plug it into my garage with a 110 adapter and can run everything in my camper that I want without problems, I go to many State Parks in my state and try to plug into the 30 amp GFI pole at the site and it trips the breaker on the pole. Does anyone have any suggestions that I can try? This has been going on for 4 years and I can't get Rockwood to do anything about it, and my dealer is stumped also. Thanks:)

We have to assume that all the parks you plug into the wiring is correct.

I assume you are not plugging into a GFI at home.

Therefore, there must be a ground fault in the camper wiring.