I always look at the campground pedestal connectors for burn marks or badly corroded/burned sockets. The 30-Amp connectors really get used more than the 50 Amp ones. I will plug into the cleanest one I see...
Plugging into a socket that shows burned arcing marks may destroy your 30A RV Cable plug requiring replacement.
The 50-Amp service actually has 50 Amps on both hot leads and true your 50A-30A Adapter only uses one of the 50-Amp legs. Your Trailer 30A MAIN breaker will keep you from using more than the 30Amps.
50A to 30A RV Dogbone Adapter (DMBRUSS)
Roy Ken
