## 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 phase current I in amps is equal to 1000 times the apparent power S in kilovolt-amps, divided by the RMS 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 phase current in amps when the apparent power is 3 kVA and the RMS voltage supply is 110 volts?

Solution:

I= 1000 × 3kVA / 110V = 27.27A## 3 phase kVA to amps calculation formula

## Calculation with line to line voltage

The phase 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 line to line RMS voltage V in volts:

I_{(A)}= 1000 ×S_{(kVA)}/ (√3 ×V_{L-L(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 phase current in amps when the apparent power is 3 kVA and the line to line RMS voltage supply is 190 volts?

Solution:

I= 1000 × 3kVA / (√3 × 190V) = 9.116A

## Calculation with line to neutral voltage

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

I_{(A)}= 1000 ×S_{(kVA)}/ (3 ×V_{L-N(V)})So amps are equal to 1000 times kilovolt-amps divided by 3 times volts.

amps = 1000 × kVA / (3 × volts)

or

A = 1000 · kVA / (3 × V)

## Example

Question: What is the phase current in amps when the apparent power is 3 kVA and the line to neutral RMS voltage supply is 120 volts?

Solution:

I= 1000 × 3kVA / (3 × 120V) = 8.333A

## See also