ELECTRICAL / CALCULATOR

Single-Phase Current

Calculate single-phase operating current from power, voltage, power factor and efficiency.

Input Parameters

Edit the example values. Results update as you type.

Power P

Power Unit

RMS Voltage U

Power Factor cosφ

Enter a decimal greater than 0 and no greater than 1.

Efficiency η

Enter 1 when the input is electrical active power.

I = P / (U × cosφ × η)

I = 2,000 / (220 × 0.85 × 1) = 10.695 A

Convert input power to 2,000 W.
Use efficiency to obtain electrical input power, then divide by RMS Voltage and power factor.

The calculation assumes a steady-state single-phase circuit.Use efficiency 1 when electrical input power is known.

I = P / (U × cosφ × η)

What efficiency should I enter for electrical input power?

Enter 1. Efficiency is needed when the entered power is output power.