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NEC Quiz: Article 240

Quiz Questions

Code Quiz: Article 240

Based on the 2005 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. What is the minimum size OCPD (OverCurrent Protection Device) that must be installed on a fire pump?
     

  2. Do specific applications have specific overcurrent protection requirements?
     

  3. What are the two conditions permitted for purposes of electrical system coordination?
     

  4. OCPDs must be protected in one of two ways. What are they?
     

  5. Under what two conditions can you not use series ratings?

 

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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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