DC Volts to watts calculation formula
P(W) = I(A) x V(V)
The power P in watts (W) is equal to the phase current I in amps (A), multiplied by the voltage V in volts (V).
So,
W = A x V
watt = amp x volt
For example:
Current (I) = 2,5A
Voltage (V) = 110V
Power (P) = 2,5A x 110V = 275W
AC single phase volts to watts calculation formula
P(W) = PF × I(A) × V(V)
The power P in watts (W) is equal to the power factor PF, multiplied by the phase current I in amps (A), multiplied by the RMS voltage V in volts (V).
So,
W = PF x A x V
watt = PF x amp x volt
For example:
Current (I) = 2,5A
Voltage (V) = 110V
PF = 0,7
Power (P) = 0,7 x 2,5A x 110V = 192,5W
AC three phase volts to watts calculation formula
P(W) = √3 × PF × I(A) × VL-L(V)
The power P in watts (W) is equal to square root of 3, multiplied by the power factor PF, multiplied by the phase current I in amps (A), multiplied by the line to line RMS voltage VVL-L in volts (V).
So,
W = √3 × PF x A x V
watt = √3 × PF x amp x volt
For example:
Current (I) = 2,5A
Voltage (V) = 110V
PF = 0,7
Power (P) = √3 × 0,7 x 2,5A x 110V = 333,42W
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