The installation specifications for class 1, 2, and 3 applications are located in _______.

The installation specifications for class 1, 2, and 3 applications are located in _______.

• A. NEC Article 800
• B. NEC Article 725
• C. NEC Article 300
• D. NEC Article 310

Answer: (B)

In the NEC, installation specifications for Class 1, 2, and 3 circuits are grouped under a dedicated article that covers power‑limited wiring, including the definitions, installation methods, and protections for these circuits. That article is the one that lays out how Class 1, 2, and 3 circuits must be installed, sized, and protected. Other articles address different topics: Article 800 covers Communications Circuits, Article 300 deals with general wiring methods for conductors, and Article 310 covers conductor ampacity and rating. So the installation specifications for Class 1, 2, and 3 applications are located in Article 725.

In the NEC, installation specifications for Class 1, 2, and 3 circuits are grouped under a dedicated article that covers power‑limited wiring, including the definitions, installation methods, and protections for these circuits. That article is the one that lays out how Class 1, 2, and 3 circuits must be installed, sized, and protected. Other articles address different topics: Article 800 covers Communications Circuits, Article 300 deals with general wiring methods for conductors, and Article 310 covers conductor ampacity and rating. So the installation specifications for Class 1, 2, and 3 applications are located in Article 725.