![]() Thus, the power P in kilowatts is equal to the current I in amps squared multiplied by the resistance R in ohms, divided by 1,000. ![]() It’s also possible to convert amps to kilowatts using circuit resistance with this formula: How to Convert Amps and Ohms to Kilowatts This formula is correct for the power delivered by all three wires in the three-phase system, but if you’re considering one wire in the three-phase system, you’ll need to divide by three. ![]() Thus, the power P in kilowatts is equal to the current I in amps multiplied by the voltage V in volts multiplied by the power factor PF multiplied by 3, divided by 1,000. The formula to convert amps to kilowatts for three-phase AC circuits where the line to neutral RMS voltage is known is: This equation is correct when considering one pair of wires in the three-phase system, but when considering all three pairs of wires in the three-phase system, you would need to multiply it by three. Thus, the power P in kilowatts is equal to the current I in amps multiplied by the voltage V in volts multiplied by the power factor PF multiplied by the square root of 3, divided by 1,000. The formula to convert amps to kilowatts for three-phase AC circuits where the current, line to line RMS voltage, and power factor is known is: Three-Phase AC Circuit Amps to Kilowatts Conversion Using Line to Line Voltage Try our power factor calculator to get the power factor if needed. Thus, the real power P in kilowatts is equal to the current I in amps multiplied by the voltage V in volts multiplied by the power factor PF, divided by 1,000. The PF is a property determined by the AC frequency and the amount of inductive or capacitive elements in the circuit. The magnitude of both real and reactive together is called the apparent power, and the PF gives the ratio of real power to apparent power. P (kW) = 1.44 kW Single-Phase AC Circuit Amps to Kilowatts ConversionĬonversion of amps to kilowatts for single-phase alternating current (AC) circuits using the current, RMS voltage, and power factor (PF) can be done with a slightly different formula.ĪC electrical power is composed of a real part, expressed in watts (W), and a reactive part, expressed in volt-amps (VA). Motor current ratings based on kilowatt output at 120, 208, 240, 277, and 480 volts three-phase AC with an efficiency of 0.8 and a power-factor of 1.For example, let’s find the kilowatts of power for a circuit with 12 amps of current at 120 volts. of 0.9 Motor Current Ratings (Three-Phase AC) Table 3 – Single Phase AC Kilowatts to Amps (kW to Amps) at a P.F. Here is the table for single-phase AC Kilowatts to Amps (kW to Amps) at a power factor of 0.9 in 120 and 240 volts single-phase AC for power 1 kW to 1000 kW: Power (kW) ![]() Table 2 – DC Kilowatts to Amps (kW to Amps) Single Phase AC Kilowatts to Amps (kW to Amps) at a P.F. Here is the kW to Amps Conversion Table at 110 VDC and 220 VDC for 1 kW to 1000 kW: Power (kW) Table 1 – typical power factor values kW to Amps Conversion Tables DC Kilowatts to Amps (kW to Amps) Here are typical power factor values in table: Device/Loadįluorescent lighting (electronic ballast) The formula states that the phase current is equal to 1000 times the power in kilowatts, divided by 3 times the power factor and the line to neutral RMS voltage. This formula relates the phase current I (in amps) to the power P (in kilowatts), power factor PF, and line to neutral RMS voltage VL-N (in volts). ![]()
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