You need a generator of 6.357 kVA to power a 3560 W house. To calculate this yourself, follow these steps:
Assume a generator efficiency of 80%, giving us a power factor of 0.8.
Divide 3560 W by 0.8 to get the generator's apparent power:
3560/0.8 = 4450 W = 4.45 kW
Convert the apparent power from kilowatts to kilo-volt-amperes (1 kW = 1 kVA) to get:
4.45 kW = 4.45 kVA
Assume the generator operates at 70% of its max capacity.
Divide the apparent power by 0.7 to calculate the generator size:
4.45/0.7 ≈ 6.357 kVA.
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