4.21 kW to Amps
4.21 kilowatts is 17.55 amps at 240V (DC). The exact amperage depends on your voltage and whether the circuit is single-phase or three-phase.
4.21 kW to Amps at Every Voltage
| Voltage | DC | AC 1-Phase (PF 0.85) | AC 3-Phase (PF 0.85) |
|---|---|---|---|
| 12V DC, automotive, solar |
351.08A | 413.04A | 238.47A |
| 24V DC, industrial control |
175.54A | 206.52A | 119.23A |
| 100V Japan residential |
42.13A | 49.56A | 28.62A |
| 120V US residential |
35.11A | 41.3A | 23.85A |
| 208V US commercial three-phase |
20.25A | 23.83A | 13.76A |
| 220V Legacy international / parts of Asia |
19.15A | 22.53A | 13.01A |
| 230V UK / EU residential |
18.32A | 21.55A | 12.44A |
| 240V US residential (dryer, range, HVAC) |
17.55A | 20.65A | 11.92A |
| 277V US commercial lighting |
15.21A | 17.89A | 10.33A |
| 400V UK / EU commercial three-phase |
10.53A | 12.39A | 7.15A |
| 460V US industrial motor (NEC 430.250 column) |
9.16A | 10.77A | 6.22A |
| 480V US industrial three-phase |
8.78A | 10.33A | 5.96A |
| 575V Canadian industrial three-phase |
7.33A | 8.62A | 4.98A |
Also Calculate
Other kW Values
0.5 kW2.08A at 240V
0.75 kW3.13A at 240V
1 kW4.17A at 240V
1.5 kW6.25A at 240V
2 kW8.33A at 240V
2.5 kW10.42A at 240V
3 kW12.5A at 240V
3.5 kW14.58A at 240V
4 kW16.67A at 240V
5 kW20.83A at 240V
6 kW25A at 240V
7.5 kW31.25A at 240V
8 kW33.33A at 240V
10 kW41.67A at 240V
12 kW50A at 240V
15 kW62.5A at 240V
18 kW75A at 240V
20 kW83.33A at 240V
22 kW91.67A at 240V
25 kW104.17A at 240V
30 kW125A at 240V
35 kW145.83A at 240V
40 kW166.67A at 240V
50 kW208.33A at 240V
60 kW250A at 240V
75 kW312.5A at 240V
100 kW416.67A at 240V
125 kW520.83A at 240V
150 kW625A at 240V
200 kW833.33A at 240V
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.