230 Volt Air Conditioner Wiring
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Is there any kind of adapter that will allow me to plug my new 230-volt 15 amp AC into my existing 220-volt 20 volt plug. How to Wire a 220 Volt Air Conditioner.
© By: Dave Rongey
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Air Conditioner
[ad#block]Question: Is there an adapter that I can use for my new 230-volt 15 amp Air conditioner?
I have a 20-amp 220volt line in my house and can only find a 15-amp air conditioner! I am hot! Is there any kind of adapter that will allow me to plug my new 230-volt 15 amp AC into my existing 220-volt 20 volt plug? Thanks very much.
Additional Comments: It’s excellent!
Background: Lori, a Homeowner from Chicago, Illinois.
Dave’s Reply:
Thanks for your electrical question Lori.
230 Volt Air Conditioner
Application: 230 Volt Circuit for an Air Conditioner.
Skill Level: Advanced – Best performed by an Electrical Contractor or a Licensed Electrician.
Tools Required: Electricians pouch of hand tools, voltage tester and protective safety gear.
Estimated Time: Depends on the make and model of the panel and the condition of the existing electrical circuit breakers and wiring methods.
Precaution: For safety the main circuit breaker should be turned off or any other disconnect means that would deenergize the panel before replacing a circuit breaker, however turning off the main circuit breaker may not deenergize all of the areas of the panel components and wiring. This is an extensive project that requires experience and should be performed by a Licensed Electrical Contractor.
How to Wire a 230 Volt Air Conditioner
- Hi Lori, let’s get you cooled down! All that is needed is to convert the existing circuit from 20 amp to a 15 amp.
- This involves replacing the 2-pole 20 amp circuit breaker with a 2-pole 15 amp circuit breaker and replacing the 20 amp outlet with the appropriate 15 amp 220 volt female outlet that matches the male plug that came with the air conditioner.
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220 Volt Wiring Diagram
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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.
See More about Electrical Wiring
Electric panel

- House Wiring Circuits and Circuit Breakers
- This article looks at common 120 volt and 240 volt house wiring circuits.
- The circuit breakers that are installed identifying the types and amperage sizes used in most homes.
Electrical circuit

- Electric Circuit Listing
- The size of the home electrical service panel is designed by calculating the square footage of the home.
- Factoring in the code requirements for the electrical circuits that are required.
Circuit breaker

- Electrical Wiring Protection using Circuit Breakers
- A guide to home electrical circuit breakers and how they work to protect your electrical wiring.
- When properly installed, your home electrical wiring is protected by a circuit protection device.
Electrical wire

- Electrical Wire for the Home
- Complete listing of electrical wire types and parts used for home project.
- Electrical code information serves as selection guidelines.
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.
See More about Electrical Wiring
Electric panel

- House Wiring Circuits and Circuit Breakers
- This article looks at common 120 volt and 240 volt house wiring circuits.
- The circuit breakers that are installed identifying the types and amperage sizes used in most homes.
Electrical circuit

- Electric Circuit Listing
- The size of the home electrical service panel is designed by calculating the square footage of the home.
- Factoring in the code requirements for the electrical circuits that are required.
Circuit breaker

- Electrical Wiring Protection using Circuit Breakers
- A guide to home electrical circuit breakers and how they work to protect your electrical wiring.
- When properly installed, your home electrical wiring is protected by a circuit protection device.
Electrical wire

- Electrical Wire for the Home
- Complete listing of electrical wire types and parts used for home project.
- Electrical code information serves as selection guidelines.
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