Quote:
Originally Posted by DutchmenSport
Maybe after the fact, but to prevent the arching on your plugs, plug in your camper first to the power cord. Plug in the power cord to the power source pedestal (shore power). THEN flip the breaker at the shore power source.
If you connect and disconnect the power cord while it has power, the arching that occurs will pit-up your connection points (pins) real fast. Always connect and disconnect with the breaker switched flipped off.
When disconnecting, flip the breaker at the power source first. Then unhook all the wire connections.
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You are absolutely correct. In the OPs situation the arcing or heat causing issue apparently happened over time and not the initial plug in. That resistance heating, if that is what it was, could be caused by repeated damage to the conductors in the plug/receptacle but I doubt that plugging in while the receptacle was charged caused the melting of the plug at that moment - but excellent points as to the process to connect the cables, plugs etc.