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NEC Quiz: Article 310, Part 3 Answers

by Mark Lamendola

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  1. [310.15(A)]. No, because the cover makes that splice accessible.

  2. [310.15(G)]. No, because of how that splice must be made. However, it's still a good practice to use a box where practical. If not practical (for example, the splice is under a residential lawn), it's a good practice identify that splice by a physical marker. Where that's not practical (for example, the splice is under a golf course), note it on the drawings or in some other way make a record of it. Though the NEC does not require these markers or records, they do aid in maintenance and repair.

  3. [310.15(J)]. No, because the luminaire also serves as a box.

  4. [310.16]. A separately bushed hole.

  5. [310.17]. The heat that can be dissipated, and the ready installation (or withdrawal) of conductors.