When exposed to contact with electric light or power conductors, how must the noncurrent-carrying metallic members of optical fiber cables be treated?

The correct approach to handling the noncurrent-carrying metallic members of optical fiber cables when they come into contact with electric light or power conductors is to ground them as close as possible to their point of emergence. Grounding these metallic components is essential for ensuring safety and preventing any potential electrical hazards.

When these metallic parts are grounded, they can safely dissipate any electrical faults or stray currents that may arise from nearby electrical conductors. This grounding process helps to minimize the risk of electric shock to personnel and reduces the chance of interference with the operation of the optical fiber system. It creates a safe path for fault currents, thereby enhancing the overall safety of the installation.

In contrast, while insulation at the entry point, covering with a protective sheath, and separating from other wiring have their own relevance in specific contexts, grounding serves as the most effective measure to directly address the risks associated with contact with electrical conductors. Insulation may not provide the same safety assurance in case of faults, and covering or separation could still leave pathways for interference or exposure. Therefore, grounding is prioritized to ensure robust safety and functionality when dealing with electrical environments.