Question by  badli (40)

What size wire is used for an 230 volt air conditioner compressor?

Is there a specific gauge wire for A/C applications?


Answer by  Egon (67)

It depends on the amount of current going to the compressor. If you are using 40 amps, then you will need #8 AWG wire (copper). For 50 amps, you will need #6. Less than 40 amps, #10 will work.

Reply by tiggerssp (1):
I have a 10 AWG wire. I have a 30 amp AC unit. Do I have to change my wire and ACoil before I put in my new 40 amp AC unit?  add a comment

Answer by  dfgospgfj (164)

Depending upon your location, the wire guage required to meet local electrical code will vary. In most cases, 12-gauge wire meets electrical code, however you need to check with your local building code authority to ensure that the wiring is both safe and up-to-code.


Answer by  scaremall (202)

There is no specific guage wire for A/C units. The guage or size is dependant on the amperage draw and the length of the conductor. Higher voltage results in lower amperage and a smaller guage wire. A 10 guage wire is sufficient for 30 amps in most home applications.


Answer by  tnnair (186)

For heavy duty, 60 Amps power is reliable. Better to use 10 gauge wire for 230V AC compressor to control the motor and avoid damage during low voltage and lightning.


Answer by  kipcat (1964)

The manufacturer recommends the actual current protection that is required for their particular unit. The wire size changes with the size or capacity of the air conditioner. The National Electric Code dictates the wire size based on current draw and length of the run. Consult a licensed qualified electrician.


Answer by  Atomicrayon (2504)

Typically the thicker the wire the better, as this will prevent both fires and shocking, keeping in mind that a rubber electrical guard is important.


Answer by  Anonymous

i have to go 16 feet will that make a diffent on the size of wire and the ac pulls 70 amps when running

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