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NEC Quiz: Article 250, Part Twelve Answers

by Mark Lamendola

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  1. [250.64(E)]. They have to be electrically continuous.

  2. Table 250.66.

  3. [250.68(B)]. An effective grounding path.

  4. [250.70]. No, unless you use a clamp or fitting listed for use with multiple conductors.

  5. [250, Part IV]. Generally, bond them. What you don't want to create is a difference of potential.