derating

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static

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after asking several local inspectors I still havent recieved a conclusive answer. The problem : I have a 2 inch conduit run from the service entrance panel to the attic,where it is ended with a bushing. I have several romex conductors run through this to the panel .Do I have to derate these ? :(
 
Re: derating

If there are more than 3 current carrying conductors you will have to use the adjustment factor from Table 310.15(B)(2)(a). In addition you may have to apply the temperature correction factor from the bottom of Table 310.16.
Don
 
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