KVA to Amperage Calculator
Convert kVA to amperes for single-phase and three-phase electrical systems.
Converting kVA to Amperage
When sizing conductors, breakers, or fuses, you need current in amperes from a known apparent power rating. This calculator converts kVA to amps for single-phase and three-phase AC systems.
Formulas
Single-phase:
$$I = \frac{kVA \times 1000}{V}$$Three-phase:
$$I = \frac{kVA \times 1000}{\sqrt{3} \times V}$$Practical Notes
These formulas assume balanced loads and do not include power factor. For real power calculations, use the KVA Calculator with power factor included.
Frequently Asked Questions
Which voltage should I use for three-phase?
Use line-to-line voltage (e.g., 400 V or 480 V) in the three-phase formula.
Does power factor affect this conversion?
This calculator converts apparent power (kVA) to current. Power factor affects real power (kW), not the current from kVA alone.
Can I use this for breaker sizing?
Use the result as a starting point. Apply local electrical code requirements and safety margins for final sizing.
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