What are the requirements for securing and supporting conductors according to NEC?

The requirements for securing and supporting conductors as outlined in the National Electrical Code (NEC) specify that conductors must be supported at intervals not exceeding 10 feet and also within 12 inches of a box or fitting. This ensures that conductors are adequately secured to prevent sagging and potential damage, while also facilitating safe and effective installation practices.

Securing conductors every 10 feet helps maintain organization and safety in electrical systems, reducing the risks of physical stress that can lead to conductors being damaged over time. Additionally, requiring support within 12 inches of boxes or fittings ensures that connections are properly maintained and that there is no excessive strain on the wiring, which is essential for reliable connections and to prevent future issues.

The other choices propose different distances and supports that do not conform to NEC guidelines. By adhering to the NEC's specifications, you ensure compliance with safety standards that are crucial for the prevention of electrical hazards. This understanding of securing and supporting conductors is vital for anyone working with electrical installations.