Useful Electrical Formulas

Useful Formulas

To Obtain

  • Kilowatts

  • kVA

  • Amperes when
    motor hp known

  • Amperes
    when kW known

  • Amperes when
    kVA known

Single Phase AC

  • Volts x Amps x PF

    1000

  • Volts x Amps

  • HP x 746

    Volts x PF x Efficiency

  • kW x 1000

    Volts x PF

  • kVA x 1000

    Volts

Three Phase AC

  • 1.732 x Volts x Amps x PF

    1000

  • 1.732 x Volts x Amps

    1000

  • HP x 746

    1.732 x Volts x PF x Efficiency

  • kW x 1000

    1.732 x Volts x PF

  • kVA x 1000

    1.732 xVolts

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