kVA to Amps (A) Calculator
Current in amps:
Calculation Formulas
Single phase kVA to amps calculation formula
I(A) = 1000 × S(kVA) / V(V)
Where:
- I(A) is the current in amps
- S(kVA) is the apparent power in kilovolt-amps
- V(V) is the voltage in volts
Three phase kVA to amps calculation formula
Line to line voltage
I(A) = 1000 × S(kVA) / (√3 × VL-L(V))
Where:
- I(A) is the current in amps
- S(kVA) is the apparent power in kilovolt-amps
- VL-L(V) is the line to line voltage in volts
- VL-N(V) is the line to neutral voltage in volts
How to Convert kVA to Amps
To convert from kilovolt-amps (kVA) to amps (A), you need to know:
- Whether the circuit is single phase or three phase
- The voltage of the circuit
- For three phase circuits, whether the voltage measurement is line-to-line or line-to-neutral
Example Calculations
Single phase example
What is the current in amps when the apparent power is 3 kVA and the voltage supply is 110 volts?
I = 1000 × 3kVA / 110V = 27.27A
Three phase example (line to line voltage)
What is the current in amps when the apparent power is 3 kVA, the voltage supply is 110 volts (line to line), and the connection is three phase?
I = 1000 × 3kVA / (√3 × 110V) = 15.75A
kVA to Amps Conversion Table
| kVA | Voltage (V) | Current (A) | Phase |
|---|---|---|---|
| 1 kVA | 120 V | 8.33 A | Single |
| 5 kVA | 120 V | 41.67 A | Single |
| 10 kVA | 240 V | 41.67 A | Single |
| 15 kVA | 208 V | 41.64 A | Three (line-line) |
| 25 kVA | 480 V | 30.07 A | Three (line-line) |
| 50 kVA | 480 V | 60.14 A | Three (line-line) |