20.5 Amps to Watts

20.5 amps is 2,460 watts at 120V (DC). The wattage depends on your circuit voltage.

20.5 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
246W 209.1W 362.17W
24V
DC, industrial control
492W 418.2W 724.34W
100V
Japan residential
2,050W 1,742.5W 3,018.1W
120V
US residential
2,460W 2,091W 3,621.72W
208V
US commercial three-phase
4,264W 3,624.4W 6,277.64W
220V
Legacy international / parts of Asia
4,510W 3,833.5W 6,639.82W
230V
UK / EU residential
4,715W 4,007.75W 6,941.63W
240V
US residential (dryer, range, HVAC)
4,920W 4,182W 7,243.44W
277V
US commercial lighting
5,678.5W 4,826.72W 8,360.13W
400V
UK / EU commercial three-phase
8,200W 6,970W 12,072.39W
460V
US industrial motor (NEC 430.250 column)
9,430W 8,015.5W 13,883.25W
480V
US industrial three-phase
9,840W 8,364W 14,486.87W
575V
Canadian industrial three-phase
11,787.5W 10,019.38W 17,354.07W

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.