PowerCalc calculates electrical power loads.

• How much power do I need for these lights?
• How much wattage can this 12 volt supply handle?
• How much wattage can this multi-phase service handle?

Enter a wattage to determine the electrical current in amps. Or enter rated ampacity of a device and see maximum wattage load. Works for any voltage.

In resistive mode, select two or three phase service to see amps per leg and total wattage for a multiphase power distribution.

AC Inductive mode allows setting of power factor and selection of single phase or three phase motor power calculations.