how many amps in 3 phase power

Thus the current in amps is equal to horsepower times 746 divided by the voltage times the efficiency η times the power factor. For example, let's find the current draw in amps of a 1 horsepower motor that runs at 120 volts with a 90% efficiency. Amps = 1 HP × 746 W 120 V × .9. Amps = 746 120 V × .9. Someof these deviations can make your three-phase voltages reach 440v, but other than this normally your 3-phase voltage is not 440v. In a 3-phase system, the voltage between any two phases is greater than a single-phase voltage by a factor of √ 3 or 1.73 roughly. That means if your single-phase voltage is 120v like in the US or Canada, your UnderCode-section 430.52 (C) (1) (c), we find an exception to the permission (s) granted for sizing an inverse time circuit-breaker, located in Table 430.52. We read: Where the circuit-breaker rating determined by T430.52 is not sufficient for the starting current (inrush current) experienced by the motor, the electrician is allowed to Todetermine the load, add up the wattage of all electrical devices that will be on the circuit and divide this total by the voltage of the circuit, usually 120 volts or 240 volts. 120 Volt, Conductor size (AWG or kcmil) Single Phase, Max 3% Voltage Drop*. Length of Run. 25'. Next determine the voltage of the motor. This motor receives a voltage of 120V. Finally, calculate the locked rotor amps using the formula above: LRA = 1000* (kVA/HP)/V. LRA = 1000* (500/100)/120. LRA = 41.666 amps. Enter the total kVA, horsepower, and voltage into the calculator to determine the locked rotor amps. Cashberry Lừa Đảo.

how many amps in 3 phase power