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wire size for central air conditioning unit

Required size of breaker is Max 40 amp What is the required wire size. #12 or #8 AWG

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Building Supplies
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4 Answers from these members:
scott d
I understand your concern. Unfortunately, the model number listed is not a valid number. However, I suspect this will require at least a 10 gauge wire and possibly an 8 gauge. This will need to be determined by the electrician. There are various details that will need to be considered to determine the size, such as:

The distance the wire has to be run

The size of the unit

The type of the unit

I recommend letting the electrician make this decision. Thank you for using Manage My Life.
by scott d Earned 3,139 community points in Building Supplies
March 24th, 2011
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Manage My Life
Thanks anyway. In a case where the breaker size is listed on the data plate. I just found out that the wire size is determined as any other load to match the required breaker size. Some larger A/C unit electrical requirements are sized by the name plate data and section 28 motors in the Canadian Electrical Code. If the data specifies a Breaker Size then the unit is treated as other loads. This is considering all of the combined parts in the unit. Max Breaker 40 amps requires a number 8 awg wire.
by Manage My Life
March 22nd, 2011
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Manage My Life
Kenmore Model C30047412 There does not seem to be a manual anywhere for it
by Manage My Life
March 22nd, 2011
Answered in 7 minutes
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Manage My Life
Managemylife.com is a great place to find the answers to just about anything, especially on appliances. I would suggest that you provide the model # so your expert will be able to provide you the best possible answer. Just click on reply below and the provide the required data.
by Manage My Life
March 22nd, 2011
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