RCGUY1:

Yup, ianober is right. But it takes quite a bit of current to heat it up and melt it. I don't think your going to be pulling 20 amps through the trailer wiring for any extended period of time. Maybe a surge or two and even then I doubt your going to pull that many amps. Unless you plan on having all the club members plugged into your trailer at once with a refrigerator or two running, plus AC to keep things cool....(Hey, you never know)...Then there maybe that fire hazard. Pulling 15 to 20 amps through the circuit for 10-15 minutes would heat things up real good..but by that time the breaker should pop (but might not if under rated load) but the heat would be there. (In fact a steady 20 amp draw at 5 minutes would heat things up well.)