338 Amps to Watts

338 amps is 40,560 watts at 120V (DC). The wattage depends on your circuit voltage.

338 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
4,056W 3,447.6W 5,971.42W
24V
DC, industrial control
8,112W 6,895.2W 11,942.84W
100V
Japan residential
33,800W 28,730W 49,761.82W
120V
US residential
40,560W 34,476W 59,714.18W
208V
US commercial three-phase
70,304W 59,758.4W 103,504.58W
220V
Legacy international / parts of Asia
74,360W 63,206W 109,476W
230V
UK / EU residential
77,740W 66,079W 114,452.19W
240V
US residential (dryer, range, HVAC)
81,120W 68,952W 119,428.37W
277V
US commercial lighting
93,626W 79,582.1W 137,840.24W
400V
UK / EU commercial three-phase
135,200W 114,920W 199,047.28W
460V
US industrial motor (NEC 430.250 column)
155,480W 132,158W 228,904.37W
480V
US industrial three-phase
162,240W 137,904W 238,856.73W
575V
Canadian industrial three-phase
194,350W 165,197.5W 286,130.46W

Other Amperages

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.