12/3 or 10/3 for 220 Line?


Old 01-31-07, 06:09 PM
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12/3 or 10/3 for 220 Line?

Is 12/3 sufficient to handle a 220 line to support a standard electric dryer, or should I go to 10/3?
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Old 01-31-07, 06:14 PM
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A dryer is 120/240v, not simply 220v. I do understand though that most non-trade folks do use the term "220v".

99% of "standard" residential electric clothes dryers will require 10/3NM cable on a two-pole 30 amp breaker.

You need the 3-wire because a neutral is required. If this were a straight 240v load you could use 2-wire (10/2 for instance) since no neutral is needed.
Old 01-31-07, 06:17 PM
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All of the NM cable you will find in your local stores will have a 600 volt rating. And if your circuit was 480 volts at 5 amps you would only require 14 guage. It is the amps that drives wire size. As already stated, a typical dryer is going to require a 30 amp breaker, which would mandate 10 guage wire.

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