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DC Amps to Watts calculation The power P in watts (W) is equal to the current I in amps (A), times the voltage V in volts (V): P_{(W)} = I_{(A)} / V_{(V)} |
AC Single Phase Amps to Watts calculation The power P in watts (W) is equal to the power factor PF times the phase current I in amps (A) times the RMS voltage V in volts (V): P_{(W)} = PF * I_{(A)} * V_{(V)} |
AC Three Phase Amps to Watts calculation Calculation with line to line voltage The power P in watts (W) is equal to the square root of 3 times the power factor PF times the phase current I in amps (A), times the line to line RMS voltage V_{L-L} in volts (V): P_{(W)} = √3 * PF * I_{(A)} * V_{L-L(V)} Calculation with line to neutral voltage The power P in watts (W) is equal to 3 times the power factor PF times the phase current I in amps (A), times the line to neutral RMS voltage V_{L-N} in volts (V): P_{(W)} = 3 * PF * I_{(A)} * V_{L-N(V)} |
Common power factor values NOTE: It is NOT recommended to use common power factor values for accurate results.
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