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NEC Quiz: Article 250, Part Twenty

by Mark Lamendola

Quiz Questions

Code Quiz: Article 250, Part 20

Based on the 2008 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. Where do you find the grounding and bonding requirements for DC systems?

  2. The NEC has requirements for two types of DC systems. What are those systems?

  3. The point of grounding connection for a DC system will differ, depending on what factor?

  4. The DC electrode conductor cannot be smaller than which two conductors?

  5. What's the rule for splicing a DC system bonding jumper?

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