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roachmon avatar image
roachmon asked

Possible to combine x3 shore power inlets for ~90A?

A customer had this question about a possible system for a van running a chemlab/test equipment. Ideally, when the opportunity is there, they would like to charge the batteries as quickly as possible via shore power.

The system:

Quatro 48v/8000

x2 Smart Lithium 25v batteries in series
AC-in 1 shore power

AC-in 2 generator

Is it possible to have 3 shore power inlets combine before entering the Quatro? The idea would be to have each shore power cord plugged into a different outlet (each on its own breaker). Each cord would be able to bring in ~20-30A totaling ~90A of 120V charging.

Is this possible? Would the 'combining' of circuits cause the outlet circuits to trip their breakers?

MultiPlus Quattro Inverter Chargerbattery chargingshorepower
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1 Answer
snoobler avatar image
snoobler answered ·

Only if the three outlets are in phase and on separate supply circuits.

Even then, I would not expect that each source would stay within it's 15-20A limit. extension cord gauge/length (resistance) and the outlet wiring itself (can't control that) would influence how power is drawn from each outlet.

I think a better solution would be a separate charger - specifically the EG4 Chargeverter. it can operate on either 120V or 240V (will require a custom adapter) and supply 50A @ 120v input and 100A @ 240V output with adjustable current and absorption voltage. On a 15A circuit, it would be limited to ~30A.


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