3.8 Amps to Watts

3.8 amps is 456 watts at 120V (DC). The wattage depends on your circuit voltage.

3.8 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
45.6W 38.76W 67.13W
24V
DC, industrial control
91.2W 77.52W 134.27W
100V
Japan residential
380W 323W 559.45W
120V
US residential
456W 387.6W 671.34W
208V
US commercial three-phase
790.4W 671.84W 1,163.66W
220V
Legacy international / parts of Asia
836W 710.6W 1,230.8W
230V
UK / EU residential
874W 742.9W 1,286.74W
240V
US residential (dryer, range, HVAC)
912W 775.2W 1,342.69W
277V
US commercial lighting
1,052.6W 894.71W 1,549.68W
400V
UK / EU commercial three-phase
1,520W 1,292W 2,237.81W
460V
US industrial motor (NEC 430.250 column)
1,748W 1,485.8W 2,573.48W
480V
US industrial three-phase
1,824W 1,550.4W 2,685.37W
575V
Canadian industrial three-phase
2,185W 1,857.25W 3,216.85W

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.