Just a thought but I have seen this in real life.
Many RVers have.. well, a few screws loose.. (read on then laugh)
I would open the power distribution center (Breaker box) so you can see the wires within.. I'm guessing either the black wire hooked to the CONVERTER breaker or the matching WHITE wire on the buss bar will show evidence of high heat.
TURN OFF THE MAIN BREAKER, Or better yet UNPLUG
Tighten ALL screws, a #2 Square bit may be best for this..
Ok, Why do I think this?
Loose screw causes both make/break as you walk around and it viberates a bit, even tossing and turnign in bed vibrates it, this can cause the breaker to .. well, break (Trip)..... Arcing as this happens overheats the wire.
NOTE: This is but one possible cause.. Just one, and perhaps not the cause, but the good news is the cost of repair is $0.00, which is why it's what I check first.
