Nonmetallic boxes are permitted to be used with which of the following?

Nonmetallic boxes are permitted to be used with which of the following?

• A. Metal raceways
• B. Wooden sheaths
• C. Nonmetallic sheaths
• D. Steel conduits

Answer: (C)

Nonmetallic boxes are specifically designed to be used with nonmetallic sheathed cables, which is consistent with NEC regulations and practices. The compatibility stems from the fact that nonmetallic boxes accommodate the particular installation characteristics of nonmetallic sheathed cabling, ensuring secure and safe connections without the risk of corrosion or grounding issues associated with metal components. When considering other options, metal raceways, wooden sheaths, and steel conduits introduce materials and conditions that might not be safe or effective with nonmetallic boxes. Metal raceways and conduits often require grounding and bonding that nonmetallic materials cannot comply with, while wooden sheaths do not provide the protective attributes of sheathed cables. Therefore, the association of nonmetallic boxes with nonmetallic sheaths is the only option that aligns with the intentions and safety standards established by the NEC.

Nonmetallic boxes are specifically designed to be used with nonmetallic sheathed cables, which is consistent with NEC regulations and practices. The compatibility stems from the fact that nonmetallic boxes accommodate the particular installation characteristics of nonmetallic sheathed cabling, ensuring secure and safe connections without the risk of corrosion or grounding issues associated with metal components.

When considering other options, metal raceways, wooden sheaths, and steel conduits introduce materials and conditions that might not be safe or effective with nonmetallic boxes. Metal raceways and conduits often require grounding and bonding that nonmetallic materials cannot comply with, while wooden sheaths do not provide the protective attributes of sheathed cables. Therefore, the association of nonmetallic boxes with nonmetallic sheaths is the only option that aligns with the intentions and safety standards established by the NEC.