63 Amps to kW
63 A is 14.49 kW at 230 V and 7.56 kW at 120 V (single-phase, power factor 1). Table for DC and three-phase, power factor 0.8, and the formula.
Formula
Worked example
- P = 230 × 63 × 1 / 1,000 = 14.49 kW
- With a power factor of 0.9: P = 230 × 63 × 0.9 / 1,000 = 13.04 kW
On other supplies
| Supply | Voltage | Power at pf 1 | Power at pf 0.8 |
|---|---|---|---|
| DC | 12 V | 0.756 kW | not used |
| DC | 24 V | 1.512 kW | not used |
| DC | 48 V | 3.024 kW | not used |
| Single-phase | 120 V | 7.56 kW | 6.048 kW |
| Single-phase | 230 V | 14.49 kW | 11.59 kW |
| Single-phase | 240 V | 15.12 kW | 12.1 kW |
| Three-phase | 208 V | 22.7 kW | 18.16 kW |
| Three-phase | 400 V | 43.65 kW | 34.92 kW |
| Three-phase | 415 V | 45.28 kW | 36.23 kW |
| Three-phase | 480 V | 52.38 kW | 41.9 kW |
Three-phase rows use the line-to-line voltage. DC ignores the power factor.
What 63 A looks like
63 A is a common breaker size for a sub-board feeder.
This is an estimate of the load current only. Choosing a cable or a breaker also needs the installation method, the ambient temperature, the voltage drop and the rules you work to.
Frequently asked questions
How many kilowatts is 63 amps?
63 A is 14.49 kW on a 230 V single-phase supply and 7.56 kW on 120 V, both with a power factor of 1. The power depends on the voltage, so it is a different answer on every supply.
What if the power factor is not 1?
The real power falls. At 230 V and a power factor of 0.9, 63 A is 13.04 kW. Heaters and filament lamps are close to 1, while motors and many power supplies are lower.
What about a three-phase supply?
63 A on 400 V three-phase at a power factor of 0.8 is 34.92 kW. The line voltage is used with the factor √3 (about 1.732).
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