387 Amps to Watts

387 amps is 46,440 watts at 120V (DC). The wattage depends on your circuit voltage.

387 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
4,644W 3,947.4W 6,837.1W
24V
DC, industrial control
9,288W 7,894.8W 13,674.19W
100V
Japan residential
38,700W 32,895W 56,975.81W
120V
US residential
46,440W 39,474W 68,370.97W
208V
US commercial three-phase
80,496W 68,421.6W 118,509.69W
220V
Legacy international / parts of Asia
85,140W 72,369W 125,346.78W
230V
UK / EU residential
89,010W 75,658.5W 131,044.37W
240V
US residential (dryer, range, HVAC)
92,880W 78,948W 136,741.95W
277V
US commercial lighting
107,199W 91,119.15W 157,823W
400V
UK / EU commercial three-phase
154,800W 131,580W 227,903.25W
460V
US industrial motor (NEC 430.250 column)
178,020W 151,317W 262,088.73W
480V
US industrial three-phase
185,760W 157,896W 273,483.89W
575V
Canadian industrial three-phase
222,525W 189,146.25W 327,610.92W

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.