3 kW to Amps
3 kW is 12.5 amps at 240 V single-phase and 3.61 amps at 480 V three-phase (at unity power factor). Single- and three-phase tables below.
3 kW to Amps conversion table
| System | Amps (PF 1.0) | Amps (PF 0.8) |
|---|---|---|
| 120 V single-phase | 25 A | 31.3 A |
| 240 V single-phase | 12.5 A | 15.6 A |
| 208 V three-phase | 8.33 A | 10.4 A |
| 480 V three-phase | 3.61 A | 4.51 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.
Frequently asked questions
12.5 amps single-phase (3 kW = 3,000 W ÷ 240 V). For a continuous 3 kW load — an EV charger, for instance — the circuit must be sized 25% above that.
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