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NEC Quiz: Article 250, Part Five Answers

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  1. [250.24(C)]. When it's operating at less than 1,000V and it's grounded at any point.
     

  2. [250.24(C)]. Yes. If you have more than one service disconnect in an assembly, you can run this conductor to the common grounded conductor terminal or bus of that assembly.
     

  3. [250.24(C)(1)]. No.
     

  4. [250.24(D)]. The Grounding Electrode Conductor (GEC).
     

  5. [250.24(D)]. 250.66.

 

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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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