How Many Amps Is 11 kW?
11 kW = 11,000 W. At 240 V single-phase (PF 0.8): 57.2917 A. At 400 V three-phase (PF 0.8): 19.8464 A per phase. As DC at 240 V: 45.8333 A. Use the calculator below for any voltage or circuit type.
Real example: an 11 kW three-phase EV charger
11 kW is the standard three-phase EV-charger and 15 HP motor size. As a near-unity-PF EV load on a 400 V three-phase supply it draws 16 A per phase — the "11 kW / 16 A" wallbox seen across Europe. At 208 V (US commercial) the same power needs about 38 A.
11 kW to Amps — Reference Chart
| Circuit | Voltage | PF | Amps |
|---|---|---|---|
| DC | 120 V | — | 91.6667 A |
| DC | 240 V | — | 45.8333 A |
| DC | 480 V | — | 22.9167 A |
| AC 1Ø | 120 V | 1.0 | 91.6667 A |
| AC 1Ø | 240 V | 1.0 | 45.8333 A |
| AC 1Ø | 240 V | 0.8 | 57.2917 A |
| AC 3Ø (L-L) | 208 V | 0.8 | 38.1662 A |
| AC 3Ø (L-L) | 400 V | 0.8 | 19.8464 A |
| AC 3Ø (L-L) | 480 V | 0.8 | 16.5387 A |
Wire & breaker: An 11 kW wallbox on 400 V three-phase pulls ~16 A per phase at unity PF, so it sits on a 16 A (or next-size-up 20 A) three-phase breaker. EV charging is continuous, so the charger itself limits to 80% of the circuit. Confirm with an electrician. Background: watts vs amps.
Frequently Asked Questions
How many amps is 11 kW at 240V single-phase?
11 kW at 240V DC or PF 1 = (11 × 1,000) ÷ 240 = 45.8333 amps. For AC single-phase with PF 0.8: 11,000 ÷ (240 × 0.8) = 57.2917 amps.
How many amps is 11 kW on a 400V three-phase supply?
11 kW on 400V three-phase at PF 0.8 = (11 × 1,000) ÷ (√3 × 400 × 0.8) = 19.8464 amps per phase. At unity PF: 15.8771 amps.
Why is an 11 kW EV charger 16 A?
Three-phase power is √3 × V × A. At 400 V: √3 × 400 × 16 ≈ 11,085 W, i.e. 11 kW. That is why the common European home charger is rated "11 kW / 16 A three-phase." A 22 kW unit simply doubles the current to 32 A.