wire for central air (cooling only)

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Old 02-06-13, 07:40 PM
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wire for central air (cooling only)

The wire for a central cooling system should be #10 or #12? I found it is #12 romex cable here. Is it correct?

How about refregerator?
 
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Old 02-06-13, 07:44 PM
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The unit will have a data plate with the circuit and overcurrent protection sizes.

A refrigerator is typically fine on a 15 amp dedicated circuit.
 
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Old 02-06-13, 07:45 PM
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The wire for a central cooling system should be #10 or #12? I found it is #12 romex cable here. Is it correct?

How about refregerator?
Wire size isn't determined by an appliance, or a type of appliance. It's determined by the calculated continuous load on the circuit.
 
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Old 02-06-13, 07:54 PM
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There are two circuits required for central air.
One for the air handler. Some are 120 v and some are 220 v. Usually a 15 amp (#14) circuit.

The condenser runs on 240 v and will usually require at least #10 wire on a 30 amp breaker. If the condenser is on the opposite end of the home from the panel......I'll use # 8 to keep the voltage drop to a minimum.
 
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