550 Watts to Amps

550 watts is 4.58 amps at 120V (DC). The exact amperage depends on your voltage and whether the circuit is DC or AC.

550 Watts to Amps at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
45.83A 53.92A 31.13A
24V
DC, industrial control
22.92A 26.96A 15.57A
100V
Japan residential
5.5A 6.47A 3.74A
120V
US residential
4.58A 5.39A 3.11A
208V
US commercial three-phase
2.64A 3.11A 1.8A
220V
Legacy international / parts of Asia
2.5A 2.94A 1.7A
230V
UK / EU residential
2.39A 2.81A 1.62A
240V
US residential (dryer, range, HVAC)
2.29A 2.7A 1.56A
277V
US commercial lighting
1.99A 2.34A 1.35A
400V
UK / EU commercial three-phase
1.38A 1.62A 0.9339A
460V
US industrial motor (NEC 430.250 column)
1.2A 1.41A 0.8121A
480V
US industrial three-phase
1.15A 1.35A 0.7783A
575V
Canadian industrial three-phase
0.9565A 1.13A 0.6497A

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.