What type of cable is preferred for outdoor installations?

What type of cable is preferred for outdoor installations?

• A. Type NM cable
• B. Type UF cable
• C. Type THHN wire
• D. Type AC cable

Answer: (B)

Type UF cable, or Underground Feeder cable, is specifically designed for outdoor and underground applications. It has a moisture-resistant and durable construction, making it suitable for environments where exposure to water and other outdoor elements is a concern. This type of cable is rated for direct burial, thus providing enhanced protection and safety in outdoor wiring scenarios. The other types of cables mentioned are not typically suited for outdoor installations. Type NM cable is intended for indoor residential use and lacks the necessary moisture protection. Type THHN wire, while versatile, is primarily designed for indoor use and requires additional protection if used outdoors. Type AC cable, known for its armored construction, is also generally used indoors and would not provide the moisture resistance needed for outdoor settings. Therefore, UF cable is the best option for ensuring reliability and safety in outdoor installations.

Type UF cable, or Underground Feeder cable, is specifically designed for outdoor and underground applications. It has a moisture-resistant and durable construction, making it suitable for environments where exposure to water and other outdoor elements is a concern. This type of cable is rated for direct burial, thus providing enhanced protection and safety in outdoor wiring scenarios.

The other types of cables mentioned are not typically suited for outdoor installations. Type NM cable is intended for indoor residential use and lacks the necessary moisture protection. Type THHN wire, while versatile, is primarily designed for indoor use and requires additional protection if used outdoors. Type AC cable, known for its armored construction, is also generally used indoors and would not provide the moisture resistance needed for outdoor settings. Therefore, UF cable is the best option for ensuring reliability and safety in outdoor installations.