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NEC Quiz: Article 250, Part Twelve Answers

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  1. [250.64(E)]. They have to be electrically continuous.
     

  2. Table 250.66.
     

  3. [250.68(B)]. An effective grounding path.
     

  4. [250.70]. No, unless you use a clamp or fitting listed for use with multiple conductors.
     

  5. [250, Part IV]. Generally, bond them. What you don't want to create is a difference of potential.

 

 

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How the NEC is arranged

  1. The first four Chapters of the NEC apply to all installations.
  2. Article 90 precedes Chapter One, and establishes the authority of the NEC.
  3. Article 80 follows the body of the NEC; it exists as Annex H. It provides the requirements for administration.
  4. Chapters 5, 6, and 7 are the "special" chapters, covering special: occupancies, equipment, and conditions (in that order).
  5. Chapter 8 provides the requirements for communications systems.
  6. Chapter 9 provides tables.
  7. The appendices provide mostly reference information.
  8. Appendix D contains examples that every NEC user should study.

 

 

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