PowerCalc

PowerCalc performs basic electrical power calculations with watts, volts, amps, and motor power factor. It works in three modes:

DC mode - simple watts, volts, amps calculations. Set the voltage, then enter a wattage to determine the electrical current drawn in amps. Or enter the rated ampacity of a device and see maximum wattage load.

AC Resistive mode - (incandescent lighting, heaters) - same as above, plus the ability to choose 1, 2, or 3 phase power service and calculate load distribution across phases.

AC Inductive mode - (motors and fluorescent lighting) - adds power factor, and calculates inductive loading. Choose single phase or three phase power.

Works for any voltage, in any country.