4,479 Watts to Amps

4,479 watts is 37.33 amps at 120V (DC). The exact amperage depends on your voltage and whether the circuit is DC or AC.

4,479 Watts to Amps at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
373.25A 439.12A 253.52A
24V
DC, industrial control
186.63A 219.56A 126.76A
100V
Japan residential
44.79A 52.69A 30.42A
120V
US residential
37.33A 43.91A 25.35A
208V
US commercial three-phase
21.53A 25.33A 14.63A
220V
Legacy international / parts of Asia
20.36A 23.95A 13.83A
230V
UK / EU residential
19.47A 22.91A 13.23A
240V
US residential (dryer, range, HVAC)
18.66A 21.96A 12.68A
277V
US commercial lighting
16.17A 19.02A 10.98A
400V
UK / EU commercial three-phase
11.2A 13.17A 7.61A
460V
US industrial motor (NEC 430.250 column)
9.74A 11.46A 6.61A
480V
US industrial three-phase
9.33A 10.98A 6.34A
575V
Canadian industrial three-phase
7.79A 9.16A 5.29A

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.