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National Electrical Code Articles and Information

NEC Quiz: Article 300, Part 1

by Mark Lamendola

Quiz Questions

Code Quiz: Article 300, Part 1

Based on the 2011 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. If you have conductors that are part of the same circuit and need to run these conductors in different raceway, what should you do?

  2. If your conductors are for systems all under 600V, can you run them in the same raceway?

  3. Where do you find the requirements for ensuring conductors won't be penetrated when run through wooden structural members?

  4. What must you do with 4AWG or larger conductors that enter an enclosure via raceway?

  5. What must you use if a raceway crosses a structural joint intended for expansion, contraction, or deflection?

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