Originally Posted by Brian B-P
I've never heard of a 50 amp appliance in an RV. Even in RVs with 50-amp service (which allows 240-volt appliances), 240 volts is very rarely used. Although large RVs often have more power demand, it is mostly due to more of the same kind of stuff found in smaller RVs, so the risks are the same; for instance, the 30 amp service in an Escape will run the small (11,000 BTU/hr) air conditioner plus some other stuff, while a large trailer or motorhome will often have two larger (13,000 BTU/hr or more) air conditioners... but they both have air conditioners which could be damaged by low voltage.
The only appliance I've seen in a large RV that I haven't also seen in Escape-sized RVs is a clothes washer/dryer.
While they don't have 50 amp appliances (that would be a full sized electric stove with oven) many of the $500,000.00 + all electric motorhomes have 240v appliances.
They make use of the 240V available when connected to a 50 amp pedestal, and use a pair of synced inverters to make 240V when connected to a 30 amp (or when dry camping on as many as 8 6V batteries). These things are on a scale that is hard to believe (or want).