Amps Calculator
Calculate estimated full-load current (amps) from power consumption (watts), supply voltage and electrical phase. Useful for checking circuit breaker sizing.
Typical aircon current draw (indicative)
| Capacity | Approx. input (W) | At 220V single-phase | Recommended breaker |
|---|---|---|---|
| 9 000 BTU | 850 W | ~4.5 A | 10 A |
| 12 000 BTU | 1100 W | ~5.9 A | 16 A |
| 18 000 BTU | 1600 W | ~8.6 A | 16 A |
| 24 000 BTU | 2200 W | ~11.8 A | 20 A |
| 36 000 BTU | 3200 W | ~17.1 A | 20 A |
Values are indicative. Actual input power depends on the specific unit, ambient temperature and inverter stage. Always refer to the unit's data plate. Circuit breaker sizing must be done by a qualified electrician.