What does the NEC® consider if a fiber-optic cable has a metallic strength member?

The National Electrical Code (NEC®) classifies cables with metallic components, such as a metallic strength member, as conductive. This classification is important because it influences how the cable is installed, the materials used, and the safety measures that must be taken to ensure proper grounding and bonding. Conductive cables can carry electrical current, which poses different installation requirements compared to non-conductive cables.

In environments where electrical interference is a concern, or where there are risks of electrical faults, it is critical to recognize the conductive nature of such cables. This distinction helps installers to apply safe practices and ensure compliance with electrical codes during the installation of fiber-optic systems, especially when these systems are integrated with copper cabling or other electrical systems.

Therefore, considering a fiber-optic cable with a metallic strength member as conductive reflects an essential aspect of both safety and compliance in fiber optic installation practices.