Apparent power in volt-amps (VA) to electric current in amps (A).

You can calculate amps from volt-amps and volts, but you can't convert volt-amps to amps since volt-amps and amps units do not measure the same quantity.

The current I in amps is equal to the apparent power
*S* in volt-amps (VA), divided by
the RMS voltage *V* in volts (V):

*I*_{(A)} = *S*_{(VA)}* */ *V*_{(V)}

So amps are equal to volt-amps divided by volts.

amps = VA / volts

or

A = VA / V

Question: What is the current in amps when the apparent power is 3000 VA and the voltage supply is 110 volts?

Solution:

*I* = 3000VA / 110V = 27.27A

The current I in amps is equal to the apparent power
*S* in volt-amps (VA), divided by
the square root of 3 times the line to line voltage *V*_{L-L} in volts
(V):

*I*_{(A)} = *S*_{(VA)}* */ (*√*3
× *V*_{L-L}_{(V)}* *)

So amps are equal to volt-amps divided by the square root of 3 times volts.

amps = VA / (*√*3
× volts)

or

A = VA / (*√*3
× V)

Question: What is the current in amps when the apparent power is 3000 VA and the voltage supply is 110 volts?

Solution:

*I* = 3000VA / (*√*3
× 110V) = 15.746A

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