Artum Snowbird wrote:
If it worked just fine for a couple of hours, then tripped out in the house, it could be because you have really reached the limit of the breaker. I wonder if they have Christmas lights and displays on the same circuit somehow?
Or are you plugged into the same circuit as the stove, oven, or hot water tank? Maybe even a hot tub perhaps?
x2, also in your post you said there was a 40A fuse, 50A service in your RV if maxed out would blow a 40A fuse. You mentioned possibly your power cord, with it disconnected does the fuse/breaker still trip? JMT