387 Watts to Amps

387 watts is 3.23 amps at 120V (DC). The exact amperage depends on your voltage and whether the circuit is DC or AC.

387 Watts to Amps at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
32.25A 37.94A 21.91A
24V
DC, industrial control
16.13A 18.97A 10.95A
100V
Japan residential
3.87A 4.55A 2.63A
120V
US residential
3.23A 3.79A 2.19A
208V
US commercial three-phase
1.86A 2.19A 1.26A
220V
Legacy international / parts of Asia
1.76A 2.07A 1.19A
230V
UK / EU residential
1.68A 1.98A 1.14A
240V
US residential (dryer, range, HVAC)
1.61A 1.9A 1.1A
277V
US commercial lighting
1.4A 1.64A 0.949A
400V
UK / EU commercial three-phase
0.9675A 1.14A 0.6572A
460V
US industrial motor (NEC 430.250 column)
0.8413A 0.9898A 0.5714A
480V
US industrial three-phase
0.8063A 0.9485A 0.5476A
575V
Canadian industrial three-phase
0.673A 0.7918A 0.4572A

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.