20.25 Amps to Watts

20.25 amps is 2,430 watts at 120V (DC). The wattage depends on your circuit voltage.

20.25 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
243W 206.55W 357.76W
24V
DC, industrial control
486W 413.1W 715.51W
100V
Japan residential
2,025W 1,721.25W 2,981.29W
120V
US residential
2,430W 2,065.5W 3,577.55W
208V
US commercial three-phase
4,212W 3,580.2W 6,201.09W
220V
Legacy international / parts of Asia
4,455W 3,786.75W 6,558.84W
230V
UK / EU residential
4,657.5W 3,958.88W 6,856.97W
240V
US residential (dryer, range, HVAC)
4,860W 4,131W 7,155.1W
277V
US commercial lighting
5,609.25W 4,767.86W 8,258.18W
400V
UK / EU commercial three-phase
8,100W 6,885W 11,925.17W
460V
US industrial motor (NEC 430.250 column)
9,315W 7,917.75W 13,713.95W
480V
US industrial three-phase
9,720W 8,262W 14,310.2W
575V
Canadian industrial three-phase
11,643.75W 9,897.19W 17,142.43W

Other Amperages

This calculator provides estimates for reference purposes only. Always consult a licensed electrician and verify compliance with the National Electrical Code (NEC) and local electrical codes before performing any electrical work.