Hi wa8xym,
I did rent 50 amp sites before I had my autoformer. There was a better change of not having as much voltage drop on the 50 amp circuit.
I do have a break out box which allows me 30 amp on one leg and twin 20 amp outlets on the other. I know it is not perfectly balanced but it is wonderful for extreme cold--and great when I wish to run the water heater on the electric setting.
I'm currently at a 50 amp site--but it is rural and a long ways from the transformer--so I'm using the autoformer to support the voltage.
Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.