kW to Amps Calculator
Convert kilowatts to amps — or amps to kW — for DC, single-phase, and three-phase circuits. Set the voltage and power factor, and WattSimple also shows the NEC breaker and copper wire size for the resulting current.
Current
40 A
- Power in
- 9.6 kW
- At voltage
- 240 V
NEC wire & breaker for this load
- Breaker
- 40 A
- Min. copper wire (75°C)
- 8 AWG
Copper, 75°C terminations, NEC Table 310.16. Real installs may need derating for ambient heat, conduit fill, or voltage drop. Full wire & breaker chart. Always confirm with a licensed electrician + local AHJ.
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