DutchmenSport wrote:
I did not read all the post, but the problem is, the camper is not grounded. Simple, that's your problem. Make sure the power source is actually grounded. Plug in the next item and make sure it's still grounded, then all the way to the camper.
Does your standard 110 extension cord have the 3rd pin for grounding?
I had this problem only once, and that was several years ago with our previous camper. I was using an extension cord with the ground pin broken off, and when baefoot touching the trailer door, I'd get zapped.
OP found the problem..
It was their heavy duty 10 ga extension cord.