I suggest Cyberfly offers the most valid reason, in as much as all have correctly stated Gauge size. The longer the cord, the more resistance, lowering the effectiveness.
I also suggest, and don't think he would mind, that you contact "John Himself" here in the top 10.
Have a licensed electrician check the converter and the specifications of the 50 ft. extension cord.If you can find any instruction manual of the camper,it would give you some hints. An under rated extension cord is dangerous.It could cause fire.
Mr Pscador is correct. Use a short cord--- make it your self using #10 AWG. And the house supply must have a 30 amp breaker which will also have # 10 wire.
Mr Pscador is correct. Use a short cord--- make it your self using #10 AWG. And the house supply must have a 30 amp breaker which will also have # 10 wire.
one problem is the 50ft cord that has a lot of resistance which will lower the amount of current reaching your camper. you would need a 10 gage wire or better. using a small plug is not good either you could get a generator to power the camper