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NEC Quiz: Article 424, Part 4

by Mark Lamendola

Quiz Questions

Code Quiz: Article 424, Part 4

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.

Article 424 provides the requirements for fixed electric space-heating equipment.

  1. Can heating cables extend beyond the room or area in which they originate?

  2. Can you route heating cables through walls? If so, how? If not, can you route them under walls?
  3. Can you use heating cables in closet ceilings as low-temperature heat sources? If not, why not? If so, what are the conditions?
  4. True or False: Heating elements of cables installed in ceilings must be at least 6 inches from the edge of outlet boxes and junction boxes.
  5. Can you splice a heater cable using solderless connectors?

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