What gauge of wire is needed for a 50A 240v Air Condition?

Answer 1

For USA, Canada and countries running a 60 Hz supply service. 10-2 wiring is good for up to a 30 Amp 240 volt Air Conditioning (AC) unit.

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That answer assumes the A/C is to be installed in a residential installation, because the service voltage is 240.

The length of wire-run should also be factored-in when deciding the correct wire size.

To get the right answers refer to the Wiring Codes or Regulations for your locality. (Town/State.)

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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

A #6 copper wire with a insulation rating of 60, 75, and 90 degrees C is rated at 55, 65 and 65 amps respectively. Remember that conductors can only be loaded to 80% capacity so your choice would be 65 x .80 = 52 amps.

Answer 3

Even though # 14 wire is rated at 15 amps you should use # 12 wire which is rated at 20 amps. Code loading is at 80%. 80% of 20 = 16 amps, this is the wire size you should be using.

Answer 4

Depends on the voltage. In the UK, at 240 volts, a 2.5mm cable would generally be ok for a 15 amp radial circuit to a single socket.

Answer 5

Eight gauge wire should be used to sufficently carry current for a 15 amp circuit.

Answer 6

The correct wire size for a 15 amp breaker is a #14 wire.

Answer 7

The rated wire for a typical 15 amp circuit would be 14 AWG. However for a dedicated AC circuit you should install a 20 amp breaker and use 12 AWG wire.

Answer 8

14 American Wire Gauge (AWG).