Considering the Multiplus 12/2000. Am I correct that when in charger only mode, the unit should pass through whatever AC power comes in? ie, with 30 amp, 120v shore power service, should I expect to see 30 amps at the distribution panel? Would this be the same across the Multiplus series? I do not need a 3000 watt inverter but do not want to be limited by the capacity of the inverter when on shore power. Thanks.