42,900 Watts to Amps

42,900 watts is 357.5 amps at 120V (DC). The exact amperage depends on your voltage and whether the circuit is DC or AC.

42,900 Watts to Amps at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
3,575A 4,205.88A 2,428.27A
24V
DC, industrial control
1,787.5A 2,102.94A 1,214.13A
100V
Japan residential
429A 504.71A 291.39A
120V
US residential
357.5A 420.59A 242.83A
208V
US commercial three-phase
206.25A 242.65A 140.09A
220V
Legacy international / parts of Asia
195A 229.41A 132.45A
230V
UK / EU residential
186.52A 219.44A 126.69A
240V
US residential (dryer, range, HVAC)
178.75A 210.29A 121.41A
277V
US commercial lighting
154.87A 182.2A 105.2A
400V
UK / EU commercial three-phase
107.25A 126.18A 72.85A
460V
US industrial motor (NEC 430.250 column)
93.26A 109.72A 63.35A
480V
US industrial three-phase
89.38A 105.15A 60.71A
575V
Canadian industrial three-phase
74.61A 87.77A 50.68A

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.