I am planning out my first ground up installation with a Multiplus 3kVA in a cargo trailer buildout. I'm trying to figure out how to plan circuit breakers and panel layout for using both AC out 1&2.

Inverter input will draw from either a 30 amp shore inlet or a 3.5kW generator with 30 amp 120v output. On AC out 1 I will have one main and two branch GFCI circuits. On AC out 2 will be an air conditioner.

In theory, the powerassist will only come on to supply the inverter AC out 1 with power when necessary, such as when the AC unit is drawing a large load on the generator.

My question is, when 30 amp shore/gen power is present and the Multiplus offers power assist, is it possible for AC out 1 to output more than 30 amps of power? And in this case do I need to put a 50 amp main circuit breaker on the inverter AC out 1?

Ideally, I'd like to use a Progressive Dynamics PD5500 panel with two 30 amp main circuits to house both AC out 1 and AC out 2, but this is not possible if one of them needs to be fused at 50 amps.

Thanks for you input!