What I have it plugged in at is a dedicated 30 amp plug in with a breaker. What it was I had a hot tub plugged in there and I put a 30 amp plug in and got rid of the hot tub. BUT the plug is fine. Iv have a fifth wheel I plugged in and ran the a.c and the fridge and everything else and never tripped. I plug in the puma without having anything on and it trips it at the breaker. No breakers inside the camper every trip. When I kick the water heater or the GEN breaker it kicks it. When I was at the dealer and it was plugged in.. Everything was fine.. Last season it kept kicking the breaker at the plug in as well a couple of times at the camp ground. I took it to the dealer and they said it was fine. And I replaced the shore cord already. I am guessing I have a short somewhere? But how do I locate a short?