Three Phase Amperes = (HP X 746) / (E X EFF X PF X 1.732)
Single Phase Amperes = (HP X 746) / (E X EFF X PF)
Direct Current Amperes = (HP X 746) / (E X EFF)
Horse Power, "HP"
Voltage, "E"
Efficiency, "EFF"
Power Factor, "PF"
NOTE: PF is ignored for the direct current Calculation.