Our Suncruiser had 2 A/Cs, 30 amp service, and a 6.5kW generator (1 20amp breaker for the rear A/c, 1 30 amp breaker for the house and front A/C).
Bot A/Cs could be run on the generator, and there was a switch to select which A/C would run on shore power.
I did a big rewire of the electrical: I broke out the rear A/C to a plug cord and outlet. Plugged into the outlet, the A/C would run as it was designed. Unplugged, I could plug it into an extension cord and run it off a 15-20 amp outlet in a camp pedestal, alongside the 30 amp cord for the front A/C and house.
I also added a 50 amp outlet tied to each of the generator breakers. That allowed me to plug our home into the generator and judiciously run whatever we wanted during a power failure. I had the whole house run through a manual transfer switch.
The only exception was the 240 V hot tub, since the generator only had 1 120 volt winding.
2014 Itasca Sunstar 31KE
1988 Itasca Suncruiser 31RQ
1968 Travco 21'