Code Q&A

Code Q&A

Q. What is the maximum length of raceway I can use where the conductor ampacity is not required to be adjusted for conductor bundling?

A. The conductor ampacity adjustment factors of Table 310.15(B)(2)(a) don’t apply to conductors installed in raceways not exceeding 24 in. in length [310.15(B)(2)(a), Exception No. 3].

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