Is it permissible to run non-metallic sheathed cable as an outside branch circuit?

Is it permissible to run non-metallic sheathed cable as an outside branch circuit?

• A. No, it is prohibited
• B. Yes, if it is listed for indoor use
• C. Yes, if it is listed for outdoor use
• D. Yes, only in dry locations

Answer: (C)

Running non-metallic sheathed cable as an outside branch circuit is permissible if it is specifically listed for outdoor use. This requirement ensures that the cable can withstand environmental conditions such as moisture, UV exposure, and temperature variations typically associated with outside installations. Cables designed for outdoor use have features such as additional insulation and moisture barriers to protect the conductors and maintain safety and functionality over time. Utilizing non-metallic sheathed cable that is not listed for outdoor use would not provide adequate protection against the elements, leading to potential failures, hazards, or violations of the National Electrical Code. Therefore, it is essential to select the correct type of cable that meets the specific outdoor requirements when planning such installations.

Running non-metallic sheathed cable as an outside branch circuit is permissible if it is specifically listed for outdoor use. This requirement ensures that the cable can withstand environmental conditions such as moisture, UV exposure, and temperature variations typically associated with outside installations. Cables designed for outdoor use have features such as additional insulation and moisture barriers to protect the conductors and maintain safety and functionality over time.

Utilizing non-metallic sheathed cable that is not listed for outdoor use would not provide adequate protection against the elements, leading to potential failures, hazards, or violations of the National Electrical Code. Therefore, it is essential to select the correct type of cable that meets the specific outdoor requirements when planning such installations.