What size wire do you use to install a 20A breaker for a 230V receptacle for use with a 230V air conditioner?

Answer 1

By asking this question you are probably not quite ready to take on this particular task. The correct answer to your question will depend on the distance from the breaker panel and exact location of the air conditioner unit, its voltage and its power rating.

Really, don't do this one yourself. Electricity is far too dangerous to handle if you have not been trained how to do this work. If you use the wrong size and type of cable for the job and/or put just one wire in the wrong place, you risk being killed by electrocution or you could even start a house fire.

How to do this job depends entirely on the Wiring Codes or Regulations for the locality (Town/County/State) and on the exact location of the electrical equipment you wish to be installed. If situated anywhere that is subject to water splashes, water spray, dampness or humidity - such as in any room supplied with running water pipes, like a kitchen, laundry room, bathroom, shower room, etc., or in a workshop, or garage (or anywhere outside a building in the open air, such as along an outside wall - or a pool-side area) in many places nowadays it is actually illegal to attempt to do this kind of work unless you are already a licensed electrician.

If you get any other answer here, you might attempt to do something you shouldn't be doing, and that may cost someone a shock, a home fire, or even their life.

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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

Answer 2

For a 20A breaker at 230V, you would typically use 12-gauge wire, which is rated for a maximum of 20 amps in residential wiring. This wire size is appropriate for powering a 230V receptacle for a 230V air conditioner. Make sure to check your local electrical codes and regulations before proceeding with the installation.

Answer 3

Use a 10 AWG wire when a circuit is to be driven by a 30 Amp breaker.

As with all home electrical projects, make certain that you understand and follow all local codes regarding any modifications that you are performing. If you have any questions, contact a qualified electrician or competent handyman, depending on state regulations.

Answer 4

A #12 copper wire with an insulation factor of 90 degrees C is rated at 20 amps.

Answer 5

10/3 with ground NM.

Answer 6

Typically 10 AWG.

Answer 7

4mm