401 Watts to Amps

401 watts is 3.34 amps at 120V (DC). The exact amperage depends on your voltage and whether the circuit is DC or AC.

401 Watts to Amps at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
33.42A 39.31A 22.7A
24V
DC, industrial control
16.71A 19.66A 11.35A
100V
Japan residential
4.01A 4.72A 2.72A
120V
US residential
3.34A 3.93A 2.27A
208V
US commercial three-phase
1.93A 2.27A 1.31A
220V
Legacy international / parts of Asia
1.82A 2.14A 1.24A
230V
UK / EU residential
1.74A 2.05A 1.18A
240V
US residential (dryer, range, HVAC)
1.67A 1.97A 1.13A
277V
US commercial lighting
1.45A 1.7A 0.9833A
400V
UK / EU commercial three-phase
1A 1.18A 0.6809A
460V
US industrial motor (NEC 430.250 column)
0.8717A 1.03A 0.5921A
480V
US industrial three-phase
0.8354A 0.9828A 0.5674A
575V
Canadian industrial three-phase
0.6974A 0.8205A 0.4737A

Other Wattages

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.