Generator Sizing Calculator
Size a generator for both steady-state and motor-starting demand. Enter your total running load, the largest motor and its starting multiplier, power factor, and a headroom margin to get the recommended kW and kVA.
Connected Load
Generator Size
Peak = other loads running + largest motor's starting surge. kVA = kW ÷ power factor. Sizing guidance — confirm with the genset manufacturer for motor-start voltage dip.
Peak demand is modeled as the rest of the load running plus the largest motor's starting surge (≈3× running for across-the-line induction motors). kVA = kW ÷ power factor. This is sizing guidance — confirm with the genset manufacturer, especially for motor-starting voltage dip and step-load limits.
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