Installing a 230 Volt Air Conditioning Circuit
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What is the proper breaker to use for a 230 volt air conditioner circuit? Electric Circuit Wiring a 230 Volt Air Conditioner. © By: Dave Rongey |
Circuit Specifications for a 230 Volt Air Conditioner
Electrical Question: What size circuit breaker do I need for my air conditioner?
- I need a 2 pole 20 amp breaker for my panel box.
- The breaker will be used for the wire to my air conditioning unit.
- The specs are:
- Rated voltage 208/230.
- 1 Phase, 60Hz.
- Min. Voltage 197, maximum voltage 253.
- Minimum circuit ampacity 18.9.max. fuse or circuit breaker, 30 amps.
- I was told that on the 12/2 wire I need a 20amp breaker, but in looking at different 20 amp breakers I see also other numbers, such as Q22o etc.
- Can you please tell me what is the proper breaker for me to use.
Thank you,
Kevin
This electrical question came from: Kevin, a Homeowner in Canada.
Additional Comments: Great site, I love it. Good place to go for honest help. Thank you.
Dave’s Reply:
Thanks for your electrical question Kevin.
Electric Circuit Wiring a 230 Volt Air Conditioner
Application: Electric Circuit for a 230volt Air Conditioner.
Skill Level: Intermediate to Advanced – Best wired by a Licensed Electrical Contractor, or by a Licensed HVAC Air Conditioning Contractor.
Tools Required: Basic Electricians Pouch Hand Tools, and a Voltage Tester.
Estimated Time: Depends on personal level experience, ability to work with tools and the available access to the welder circuit and electrical connection box.
Precaution: Identify the welder circuit, turn it OFF and Tag it with a Note before working with the 230 volt air conditioner cord and wiring.
The Circuit Breaker Size for a 230 Volt Air Conditioner
- Kevin, according to the specs for the air conditioner the circuit that should be installed would be a 30 amp 230 volt circuit using 10/2 cable with ground. The circuit breaker for this air conditioner circuit should be a 2-pole 30 amp breaker.
- More about Electric Circuit Wiring for a 230 Volt Air Conditioner
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