As far back as 2003 the Safari line of gas coaches came with 50 amp service and the Xantrex inverter/charger as standard equipment as well as a bank of four batteries for the house. ONE AC unit on the roof.
Monaco and Holiday Rambler also had 50 amp service as standard on some gas units as far back as 2000 with inverter/chargers. Size of the tires did not matter nor did the number of AC units.
I believe that those RV's with the Workhorse P chassis came with 30 amp service and that all of those on the W series chassis had 50 amp service.
