4,000 Watts to Amps
4,000 watts is 33.3 amps at 120 volts and 16.7 amps at 240 volts (amps = watts ÷ volts, at unity power factor). Every common voltage below.
4,000 Watts to Amps conversion table
| Voltage | Amps (PF 1.0) | Amps (PF 0.8) |
|---|---|---|
| 12 V DC | 333 A | — |
| 24 V DC | 167 A | — |
| 48 V DC | 83.3 A | — |
| 120 V AC | 33.3 A | 41.7 A |
| 208 V AC | 19.2 A | 24 A |
| 240 V AC | 16.7 A | 20.8 A |
| 277 V AC | 14.4 A | 18.1 A |
| 480 V AC | 8.33 A | 10.4 A |
PF = power factor. Resistive loads (heaters, incandescent lights) are PF 1.0; motors and compressors typically run PF 0.8-0.9. For a different value, use the interactive converter.
What draws about 4,000 watts?
Frequently asked questions
33.3 amps (4,000 W ÷ 120 V). On a circuit, a 4,000 W resistive load needs at least a 35 A breaker — and 25% more if it runs 3+ hours continuously.
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