I plug in my trailer a couple of days before a trip so we can stock the refrigerator/freezer. The trailer is a 30 amp. system. I run an extension cord from a regular house outlet to the trailer usin...
I know that the cord in my previous RV would "heat" when I did not pull it all the way out. I never bothered to measure the temperature--but from then on I always pulled it clear of the RV.
While it probably doesn't make much difference I believe that the shorter the cord to shore power, the better it is, provided such a cord can safely carry the number of amps being used.
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