Question

In which location(s) is Type NM cable NOT allowed to be run?

O a. Concealed in dry locations only
O b. Damp and moist locations only
O c. Exterior masonry block or tile walls
O d. Both damp and moist locations and when concealed in dry locations.

Answer 1

Type NM cable is not allowed to be run in damp and moist locations or in exterior masonry block or tile walls, according to the NEC. It's designed for dry indoor settings and must be installed according to specific codes to prevent hazards.

Step-by-step explanation:

Type NM cable, also known as nonmetallic sheathed cable, is commonly used for residential electrical wiring. While it is versatile and cost-effective, there are specific locations where it is not permitted by the National Electrical Code (NEC).

The answer to the question is: Type NM cable is NOT allowed to be run in damp and moist locations and also is not allowed to be run in exterior masonry block or tile walls. The cable is designed for dry indoor locations, and when used in damp or moist locations, there is a risk that moisture could penetrate the cable and cause damage. Moreover, running Type NM cable in exterior walls, masonry block, or tile walls exposes the cable to potential damage from the external elements or heavy impact.

While Type NM cable can be concealed in dry locations, it's important to abide by the NEC's installation rules to ensure safety and avoid any electrical hazards.