20,520 Watts to Amps

20,520 watts is 171 amps at 120V (DC). The exact amperage depends on your voltage and whether the circuit is DC or AC.

20,520 Watts to Amps at Every Voltage

VoltageDCAC (PF 0.85)AC 3-Phase (PF 0.85)
12V
DC, automotive, solar
1,710A 2,011.76A 1,161.49A
24V
DC, industrial control
855A 1,005.88A 580.75A
100V
Japan residential
205.2A 241.41A 139.38A
120V
US residential
171A 201.18A 116.15A
208V
US commercial three-phase
98.65A 116.06A 67.01A
220V
Legacy international / parts of Asia
93.27A 109.73A 63.35A
230V
UK / EU residential
89.22A 104.96A 60.6A
240V
US residential (dryer, range, HVAC)
85.5A 100.59A 58.07A
277V
US commercial lighting
74.08A 87.15A 50.32A
400V
UK / EU commercial three-phase
51.3A 60.35A 34.84A
460V
US industrial motor (NEC 430.250 column)
44.61A 52.48A 30.3A
480V
US industrial three-phase
42.75A 50.29A 29.04A
575V
Canadian industrial three-phase
35.69A 41.98A 24.24A

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.