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National Electrical Code Articles and Information

NEC Quiz: Article 406

by Mark Lamendola

Quiz Questions

Code Quiz: Article 406, Part 1 of a series

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

Receptacles seem easy enough to install, but Code violations with them are actually quite common. So is poor workmanship. Article 406 provides the requirements for receptacles, cord connectors, and attachment plugs (caps). Take our quiz to see if you understand and can correctly apply these requirements.

  1. If the manufacturer's name is not on a receptacle, is that a problem?

  2. Where can you install a 10A receptacle?
  3. If a receptacle has an orange triangle on it, what type is it and how must it be used?
  4. If a receptacle is controlled by an automatic control device or incorporates control features that remove power from the outlet (for energy management or building automation), what kind of marking must be on it?
  5. Does every receptacle need to be of the grounding type?

Answers to this quiz are here: Answers to this quiz

See how you did!