340 Amps to Watts

340 amps is 40,800 watts at 120V (DC). The wattage depends on your circuit voltage.

340 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
4,080W 3,468W 6,006.75W
24V
DC, industrial control
8,160W 6,936W 12,013.5W
100V
Japan residential
34,000W 28,900W 50,056.27W
120V
US residential
40,800W 34,680W 60,067.52W
208V
US commercial three-phase
70,720W 60,112W 104,117.04W
220V
Legacy international / parts of Asia
74,800W 63,580W 110,123.79W
230V
UK / EU residential
78,200W 66,470W 115,129.42W
240V
US residential (dryer, range, HVAC)
81,600W 69,360W 120,135.04W
277V
US commercial lighting
94,180W 80,053W 138,655.86W
400V
UK / EU commercial three-phase
136,000W 115,600W 200,225.07W
460V
US industrial motor (NEC 430.250 column)
156,400W 132,940W 230,258.83W
480V
US industrial three-phase
163,200W 138,720W 240,270.09W
575V
Canadian industrial three-phase
195,500W 166,175W 287,823.54W

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.