Electrician's Licensing Practice Exam

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Which annex of the NEC covers conduit fill?

  1. Annex A

  2. Annex B

  3. Annex C

  4. Annex D

The correct answer is: Annex C

Conduit fill is covered in Annex C of the NEC (National Electrical Code). This annex provides tables that help determine the maximum number of conductors that can be placed in various conduit sizes based on the type of conductors and the size of the conduit. Ensuring proper conduit fill is crucial for maintaining wire integrity and reducing the risk of overheating, which could lead to electrical fires or equipment malfunction. Annex A primarily includes general information and definitions, while Annex B covers connection methods and tools. Annex D involves other miscellaneous data, not specifically related to conduit fill. Therefore, Annex C is the correct choice as it directly addresses the critical factors involved in safe and effective conduit usage.

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