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Old 02-09-2013, 06:30 PM   #16
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Join Date: Apr 2006
Location: WI & France { in France for now }
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Romex per holes in wooden framing


Quote:
Originally Posted by Hardway View Post
No derating until 24 ".

Explain this please?
I know what is ment by derating. But not until 24 ".
Quote:
Originally Posted by Toller View Post
I also would like an elaboration
Very simple the heating effect on the conductors when you get more than 23.9 inches the derating can be in effect espcally if you have large numbers of cable or conductors and it is more than 24 inches the derating do kick in and it will reduce the current carry rating a bit depending on numbers of conductors or cable in the hole or in conduit.

Merci.
Marc


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The answer will be based on NEC ( National Electrical code ) or CEC ( Cananda Electrical code ) or ECF ( Electrique Code France )
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