Section ___ of the NEC permits nonmetallic outlet and device boxes to be installed with nonmetallic sheathed cable.

• A. 371.4(A)
• B. 314.3
• C. 380.2(B)
• D. 380.2

Answer: (B)

The thing this question tests is which NEC rule directly tells you that nonmetallic outlet and device boxes can be used with nonmetallic-sheathed cable. The section that covers boxes, cabinets, and fittings explicitly allows using nonmetallic outlet and device boxes with NM cable, as long as the box is listed for that use and the installation follows the listing. That means you must use a listed NM clamp or connector to secure the cable to the box and observe proper box fill and mounting per the listing. This ensures the plastic box and the NM cable are compatible and protected, with conductors entering through a listed, approved path. The other sections refer to different box types, locations, or installation rules and don’t address this particular combination.