What must be done to cables that are subject to physical damage?

• A. Designed
• B. Protected
• C. Insulated
• D. Covered

Answer: (B)

Cables that are subject to physical damage must be protected to ensure their integrity and functionality. Protection typically involves using physical barriers, conduit systems, or other methods to shield the cables from potential hazards such as abrasion, impact, or exposure to environmental factors. This is crucial in areas where cables may be exposed to foot traffic, machinery, or extreme weather conditions.

The protection of cables is a fundamental aspect of electrical safety and code compliance. It helps to prevent short circuits, electrical shocks, and fires that could result from damaged insulation or conductors. By ensuring that the cables are adequately protected, the risk of electrical failure is minimized, thereby enhancing the overall safety of the installation.

While insulation is important for the electrical safety of cables, protection specifically addresses the physical threats to their structure, making it the most appropriate choice in this context. Covering could refer to simply placing something over the cables, which may not necessarily provide adequate protection, and designing relates more to how cables are laid out and installed rather than their physical safeguarding against damage.