Accurately determine the amperage (current) of your 3-phase motor using our easy online calculator. Input the motor's power in kilowatts (kW), voltage, power factor, and efficiency to get instant results, essential for proper wiring, protection, and system design in industrial and commercial settings.
Formula:
The formula to calculate 3-phase motor amperage is:
I = (P × 1000) / (√3 × V × PF × Eff)
Where:
- I = Amperage (Amps)
- P = Power (kilowatts, kW)
- V = Line-to-line Voltage (Volts)
- PF = Power Factor (unitless, typically between 0 and 1)
- Eff = Motor Efficiency (unitless, typically between 0 and 1)
- 1000 = Conversion factor from kW to Watts
- √3 ≈ 1.732 (Square root of 3)