- Outback Power Systems, Inc. Battery Charger User Manual

Planning
900-0111-01-00 Rev A 13
A generator should be sized to provide enough power for all the loads and the battery charging.

Available generator power may be limited by ratings for circuit breakers and/or generator connectors.
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The generator must be able to provide current to all inverters on a given phase or leg. Minimum generator
wattage* is usually recommended to be twice the wattage of the inverter system. Many portable generators
may not be able to maintain AC voltage or frequency for long periods of time if they are loaded more than
80% of rated capacity.
(*after de-ratings for peak versus continuous power, for load power factor considerations, for altitude, and
for ambient temperature.)