kVA to Amps conversion formulas are used to calculate current from known kVA rating of AC electrical power equipment. Given below is the list of formulas:

  • Single Phase kVA to Amps: I = (kVA * 1000) / E
  • Two-phase Four wire AC kVA to Amps: I = (kVA * 1000) / (E*2)
  • Three phase kVA to Amps: I = (kVA * 1000) / (E*1.73)

Single Phase kVA to Amps Examples

Example: Find the current drawn by a 230 V, 10 kVA single phase load.

Solution: I = (10 * 1000)/230

= 10000/230 Amps

= 43.4 Amps


Two phase Four Wire AC System

Example: Find the current drawn by two phase, four wire 220 V, 5 kVA load.

Solution: I = (5 * 1000) / (220 * 2)

= 5000/440

= 11.36 Amps


Three phase AC System

Example: Find the current supplied by a 400 V, 20 kVA three-phase generator operating at full load.

Solution: I = (20*1000) / (400 * 1.73)

= 28.9 Amps