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Old 07-17-2012, 03:51 PM   #31
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Installing Conditioning disconnect

Originally Posted by Mr.HVAC View Post
Since we are talking about wire size, what would happen if you put in a higher amp rated wired for A/C. I would assume it would be ok, just not cost wise?
It comes down to cost, and copper isn't exactly cheap these days, the other reasoning is that it really serves no purpose to size the wire the maximum breaker allowed, that number is just for starting the motor, nothing else.

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attic wiring, thhn

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