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AC / DC Formulas

To Find

  • Amps when HP is known
  • Amps when KW is known
  • Amps when KVA is known
  • Kilowatts
  • Kilovolt-Amps
  • Horsepower

Direct Current

  • (HP * 746)/(E * Eff)
  • (KW*1000)/E
  • N/A
  • (I * E) / 1000
  • N/A
  • (I * E * Eff) /746)

AC/1phase All Voltages

  • (HP * 746)/(E * Eff * PF)
  • (KW * 1000) / (E * PF)
  • (KVA * 1000) / E
  • (I * E * PF) / 1000
  • (I * E)/ 1000
  • (I * E * Eff * PF)/746

AC/3phase All Voltages

  • (HP * 756)/(1.73 * E * Eff * PF)
  • (KW * 1000) / (1.73 * E * PF)
  • (KVA * 1000) / (1.73 * E)
  • (I * E * 1.73 * PF) / 1000
  • (I * E * 1.73) / 1000
  • (I * E * Eff * 1.73 * PF) / 746

Electrical Variables

  • E = Voltage
  • I = Amps
  • W = Watts
  • PF = Power Factor
  • Eff = Efficiency
  • HP = Horsepower

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