42.1 Amps to Watts

42.1 amps is 5,052 watts at 120V (DC). The wattage depends on your circuit voltage.

42.1 Amps to Watts at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
505.2W 429.42W 743.78W
24V
DC, industrial control
1,010.4W 858.84W 1,487.55W
100V
Japan residential
4,210W 3,578.5W 6,198.14W
120V
US residential
5,052W 4,294.2W 7,437.77W
208V
US commercial three-phase
8,756.8W 7,443.28W 12,892.14W
220V
Legacy international / parts of Asia
9,262W 7,872.7W 13,635.92W
230V
UK / EU residential
9,683W 8,230.55W 14,255.73W
240V
US residential (dryer, range, HVAC)
10,104W 8,588.4W 14,875.55W
277V
US commercial lighting
11,661.7W 9,912.45W 17,168.86W
400V
UK / EU commercial three-phase
16,840W 14,314W 24,792.58W
460V
US industrial motor (NEC 430.250 column)
19,366W 16,461.1W 28,511.46W
480V
US industrial three-phase
20,208W 17,176.8W 29,751.09W
575V
Canadian industrial three-phase
24,207.5W 20,576.38W 35,639.33W

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.