# how many amps in 3 phase power

The Wye configuration is used to distribute power to everyday single-phase appliances found in the home and office. The higher the voltage, the more efficient and powerfull the circuit will be. Three phase kW to Amps calculations involve a ration of 1000 times kW to the power factor times voltage and an additional factor 1.73 that represents an equivalent of √3 and is added because the circuit is three phase in nature. The power factor of resistive impedance load is equal to 1. A 3 phase power outlet will have 3 wires for power, and if it is 220 volts you could measure 220 volts between any combination of the 3 wires. Single- phase loads are connected to one leg of the wye between line and neutral. Single-Phase Motors - HP and Full-Load Currents. Figure 7 – Delta connection – three phase, three wires. Decided to check the amps on a three hp motor. For example, if the motor is drawing 30 amps at 250 volts, you have 30 x 250 x sqrt 3 (about 1.73) = 12,975 watts). FORMULAS USED IN CALCULATOR: 1-Phase KVA = Volts x Amps / 1000 1-Phase Amps = KVA / Volts x 1000 3-Phase KVA = Volts x Amps x 1.732 / 1000 3-Phase Amps = KVA / Volts / 1.732 x 1000 As an example, consider a balanced three phase load consuming 36 kW at a power factor of 0.86 and line to line voltage of 400 V (V LL) : the line to neutral (phase) voltage V LN = 400/√3 = 230 V three phase power is 36 kW, single phase power = 36/3 = 12 kW now simply follow the above single phase method. 3 Phase in N. America is normally available in 208, 220 or 240 or 480 or 600 volts (Canada). Calculate three-phase motor power consumption by multiplying amps by volts by the square root of three (W = AV(sqrt 3). I should of checked the voltage. What is causing the .6 reading on one leg? I got 9-.6-9 It sounds good. 3 PHASE AMPERES - 80% POWER FACTOR* (Extended Table) kW Times 1000 divided by (Volts*1.73) *.80 This chart approximates the amperage of a generator based on the size of the generator and the load on the generator at 100 percent of capacity. 230 volts motor - 3-phase : 2.5 amps/hp; 460 volts motor - 3-phase : 1.25 amps/hp; Always check nameplate information before designing protective devices, wiring and switch gear. Three phase Amps = [HP * 746] / [E * %age Efficiency * PF * 1.73] Example: Determine the current flowing through a three-phase, 2 HP, 400-volt motor having an efficiency rating of 93% and a power … A motor of a given rated horsepower is expected to deliver that quantity of mechanical power at the motor shaft. Jraef. Convert watts to kilowatts by dividing the number of watts by 1,000. Three phase kW to Amps. Easy enough. Amps per leg on three phase?? 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