Generally yes, they do require 50 amps.. If you have an enegery management system they may well insist on 50 amps.
On my coach, a 50 amp model, there is no EMS, as a result I have on two occasions, just 2, been able to do it.
1: When the coach was brand new
2: This last week, When I parked I climbed up and CLEANED the condenser coils so that air moves through them way better.
In between (The rig is 5 years old) I've not had success doing it.
Regular cleaning is now on the routine maintenance list.
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Home is where I park it!
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