Just have a little guy.. 30 amps.
My point was that since RVs have no 240Vac appliances the rig is looking for two 120Vac circuits.. 120/240 is ok.. 208Y/120 is OK and if one uses adapters, boxes and special cords just two 120Vac (same phase) will please it.
I use 50 amp on occasion, when that's all there is or there is an issue with the 30 amp (like not there sometimes) or every Fall at the festival of crokpots where we run 50 amp to a 30 amp #10 cord to a quad 20 box..
We can settle this with wet cocktail napkins and dull pencils while we eat Madam's Utz chips at the Dollywood Rally..
Jeanie & Joe
2006 "Collector Edition" Arctic Fox 24-5N