We downsized from a Montana 5th wheel with 50 amp to this unit. With 50 amps we could run everything in the RV without popping any breakers.
The idea of 50 amp is to split up the power loads between the two 120 VAC power sources.
One source for one A/C, water heater and outlets. The other source for one A/C, Microwave and outlets.
When we boon-docked we would use propane for the water heater when needed as we used a generator to power the RV.