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The phase current I in amps (A) is equal to the real power P in watts (W), divided by the power factor PF times the RMS voltage V in volts (V):
I(A) = P(W) / (PF × V(V) )
So amps are equal to watts divided by power factor times volts.
amps = watts / (PF × volts)
A = W / (PF × V)
What is the phase current in amps when the power consumption is 330 watts, the power factor is 0.8 and the RMS voltage supply is 110 volts?
I = 330W / (0.8 × 110V) = 3.75A