National Electrical Code Articles and Information

Code Quiz: Article 398

Based on the 2014 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. Since 1996, he has been writing National Electrical Code articles for electrical trade magazines and has an extensive portfolio of hundreds of NEC articles.

After Article 392, Chapter 3 winds down with a series of "oddball" Articles. The fourth one is also the penultimate one in Chapter 3. It's Article 398. This wiring method is still used, primarily because it's inexpensive compared to other methods. It's also ugly, so if appearance is a consideration this method is probably not for you.

1. Article 398 is a Chapter 3 article addressing a specific wiring method. Which wiring method does it address, and what are its defining characteristics?
    

2. Name three permitted uses for this wiring method.
    

3. Name the prohibited uses for this wiring method.
    

4. What type hardware is permitted for supporting this wiring method?
    

5. What restriction is there on using couplings and connectors with this wiring method?

Answers to this quiz are here: Answers to this quiz

See how you did!