Prepare for the Electrical Code 3 Exam. Practice with flashcards and multiple-choice questions, each with hints and explanations. Get ready and pass your exam!

Multiple Choice

Which NEC article governs the installation of enclosures and boxes in walls?

The concept tested is which NEC article governs the installation of electrical boxes and enclosures in walls. Article 314 specifically covers boxes, conduit bodies, cabinets, and fittings used for electrical installations, including flush‑mounted or recessed enclosures in walls, and it includes rules on box fill, mounting, clamps, and cover plates. That makes it the correct reference for enclosures in walls. The other articles address different topics: switches and their circuits (Article 404), service and feeders (Article 230), and grounding and bonding (Article 250), none of which focus on enclosures in walls.

The concept tested is which NEC article governs the installation of electrical boxes and enclosures in walls. Article 314 specifically covers boxes, conduit bodies, cabinets, and fittings used for electrical installations, including flush‑mounted or recessed enclosures in walls, and it includes rules on box fill, mounting, clamps, and cover plates. That makes it the correct reference for enclosures in walls. The other articles address different topics: switches and their circuits (Article 404), service and feeders (Article 230), and grounding and bonding (Article 250), none of which focus on enclosures in walls.