Electrical formulas for computing alternator amperage

Desired data Single-phase Three-phase Direct current
Kilovolt-Amps (kVA) Volts x Amps / 1,000 Volts x Amps x 1.732 / 1,000
Kilowatts (kW) kVA x Power Factor (PF) kVA x Power Factor (PF) Volts x Amps / 1,000
AMPS – When kW are known kW x 1,000 / Volts x PF kW x 1,000 / 1.732 x Volts x PF kW x 1,000 / Volts
AMPS – When kVA is known kVA x 1,000 / Volts kVA x 1,000 / 1.732 x Volt