Electrician's Licensing Practice Exam

According to the NEC, where can you find the requirements for burying 240V conductors?

1. NEC 250.5

2. NEC 300.5

3. NEC 400.5

4. NEC 450.5

The correct answer is: NEC 300.5

The requirements for burying 240V conductors can be found in NEC 300.5. This section outlines the general requirements for underground installations, covering aspects such as burial depth, types of conductors and cables that can be used, and the types of enclosures needed for protection against physical damage. NEC 300.5 specifically addresses the considerations for ensuring safe and code-compliant installations of conductors in the ground, which is essential for preventing accidental damage and ensuring reliability in electrical systems. The other options do not pertain to the burial of conductors. NEC 250.5 discusses grounding and bonding and the requirements related to those topics, which are not focused on conductor burial. NEC 400.5 relates to flexible cords and cables, primarily addressing their use and installation rather than burial requirements. NEC 450.5 deals with the requirements for capacitors, transformers, and other similar equipment, which again does not provide information on the burial of conductors. Therefore, NEC 300.5 is the relevant section for understanding the proper practices for burying 240V conductors.