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How to convert kVA to amps

How to convert apparent power in kilovolt-amps (kVA) to electric current in amps (A).

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

Single phase kVA to amps calculation formula

The current I in amps is equal to 1000 times the apparent power S in kilovolt-amps, divided by the voltage V in volts:

I(A) = 1000 × S(kVA) / V(V)

So amps are equal to 1000 times kilovolt amps divided by volts.

amps = 1000 × kVA / volts

or

A = 1000 · kVA / V

Example

Question: What is the current in amps when the apparent power is 3 kVA and the voltage supply is 110 volts?

Solution:

I = 1000 × 3kVA / 110V = 27.27A

3 phase kVA to amps calculation formula

The current I in amps is equal to 1000 times the apparent power S in kilovolt-amps, divided by the square root of 3 times the voltage V in volts:

I(A) = 1000 × S(kVA) / (√3 × V(V) )

So amps are equal to 1000 times kilovolt amps divided by the square root of 3 times volts.

amps = 1000 × kVA / (√3 × volts)

or

A = 1000 · kVA / (√3 × V)

Example

Question: What is the current in amps when the apparent power is 3 kVA and the voltage supply is 110 volts?

Solution:

I = 1000 × 3kVA / (√3 × 110V) = 15.746A

 

How to convert amps to kVA ►

 

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