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NEC Quiz: Article 250, Part Seventeen

Quiz Questions

Code Quiz: Article 250, Part 17

Based on the 2008 NEC

Questions and answers written by Mark Lamendola, who has worked as a master electrician, electrical inspector, and design engineer. Mark is an IEEE Senior Member, and the Code article author for Codebookcity.com. He is a former editor of an electrical magazine were he edited Code articles.

  1. When installing an aluminum equipment grounding conductor, how much of it must make a good ground connection?
     

  2. When can the AHJ specify that your EGC must be larger than your current-carrying conductors?
     

  3. If you run current-carrying conductors in parallel, what must you do with the EGC?
     

  4. If you use separable connections (as in drawout equipment), what must they provide?
     

  5. What condition must exist if you wish to install an automatic cutout or switch in your EGC?

 

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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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