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Alternator kVA & Power Factor Sizing
Size the alternator end, not just the engine: power factor, non-linear load, and starting kVA all land on the winding.
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Sizing calculators
Pick kW/kVA, duty rating, and load factor from the load you actually have.
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Duty Rating Selector (ESP / PRP / COP)
Map the application and hours to the ISO 8528 rating to specify and the NEC article that governs the installation.
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Generator Derating: Altitude & Temperature
Altitude and ambient temperature reduce every rating. Convert your site conditions into usable kW and the nameplate you must order.
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Generator Load Factor Check
See how loaded a set will actually run, and whether a light load puts it into wet-stacking territory.
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Generator Sizing Calculator
Running load plus the largest motor start, a growth margin, and the duty rating you actually need, expressed in kW and kVA.
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Non-Linear Load & Alternator Derating
Harmonic currents heat alternator windings. Turn a non-linear load share into the kVA a set really has to carry.
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Standby Generator Size Match
Turn a required kW into the residential or light-commercial size class you can actually buy, with the ATS and breaker that go with it.
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