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National Electrical Code Articles and Information

NEC Quiz: Article 408, Part 3

by Mark Lamendola

Quiz Questions

Code Quiz: Article 408, Part 3 of a series

Based on the 2017 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 Since 1996, he has been writing National Electrical Code articles for electrical trade magazines and has an extensive portfolio of hundreds of NEC articles.

  1. What must you do with unused openings in enclosures for switches and breakers (very common Code violation)?

  2. Can you install switchboards in damp locations? What about wet ones?
  3. Can you install switchboards and switchgear near easily ignitible material?
  4. Is three feet the correct clearance around switchboards and switchgear?
  5. What is a mandatory criterion for where you locate switchboards or switchgear?

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