Air conditioner circuit breaker size

The size of the circuit breaker for an air conditioner (AC) depends on several factors, including:

1. Power rating: The AC's power rating, measured in watts (W), is the most important factor in determining the required circuit breaker size. A higher power rating requires a larger circuit breaker.
2. Voltage: The voltage of the AC, measured in volts (V), also affects the required circuit breaker size. Higher voltage ACs require larger circuit breakers.
3. Current rating: The current rating of the AC, measured in amperes (A), is another important factor. A higher current rating requires a larger circuit breaker.
4. Type of AC: The type of AC, such as a window unit, split system, or central air conditioning system, can also affect the required circuit breaker size.

Here are some general guidelines for selecting a circuit breaker size for an air conditioner:

Window units:

• 5,000-7,000 W: 15-20 A circuit breaker
• 7,000-10,000 W: 20-25 A circuit breaker
• 10,000-12,000 W: 25-30 A circuit breaker

Split systems:

• 9,000-12,000 BTU: 15-20 A circuit breaker
• 12,000-18,000 BTU: 20-25 A circuit breaker
• 18,000-24,000 BTU: 25-30 A circuit breaker

Central air conditioning systems:

• 2-3 tons (24,000-36,000 BTU): 30-40 A circuit breaker
• 3-4 tons (36,000-48,000 BTU): 40-50 A circuit breaker
• 4-5 tons (48,000-60,000 BTU): 50-60 A circuit breaker

Important notes:

• Always check the manufacturer's specifications for the recommended circuit breaker size for your specific air conditioner model.
• It's generally recommended to oversize the circuit breaker by 10-20% to account for any potential voltage drops or other factors that may affect the AC's performance.
• If you're unsure about the correct circuit breaker size for your air conditioner, consult a licensed electrician or the manufacturer's customer support team.

Remember to always follow local electrical codes and regulations when selecting and installing a circuit breaker for your air conditioner.