660 Watts to Amps

660 watts is 5.5 amps at 120V (DC). The exact amperage depends on your voltage and whether the circuit is DC or AC.

660 Watts to Amps at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
55A 64.71A 37.36A
24V
DC, industrial control
27.5A 32.35A 18.68A
100V
Japan residential
6.6A 7.76A 4.48A
120V
US residential
5.5A 6.47A 3.74A
208V
US commercial three-phase
3.17A 3.73A 2.16A
220V
Legacy international / parts of Asia
3A 3.53A 2.04A
230V
UK / EU residential
2.87A 3.38A 1.95A
240V
US residential (dryer, range, HVAC)
2.75A 3.24A 1.87A
277V
US commercial lighting
2.38A 2.8A 1.62A
400V
UK / EU commercial three-phase
1.65A 1.94A 1.12A
460V
US industrial motor (NEC 430.250 column)
1.43A 1.69A 0.9746A
480V
US industrial three-phase
1.38A 1.62A 0.9339A
575V
Canadian industrial three-phase
1.15A 1.35A 0.7796A

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.