Flexible cords and cables shall not be ___.

• A. Used as elevator cables
• B. Run through holes in walls
• C. Used as data processing cables
• D. Used to prevent transmission of vibration

Answer: (B)

Flexible cords are meant for temporary, movable connections and not for permanent or concealed wiring. They need to be accessible and protected, with proper strain relief and in approved locations. Running a flexible cord through holes in walls or other concealed spaces hides damage, can lead to nicks, heat buildup, moisture intrusion, and fire hazards, and it isn’t allowed as a normal wiring method. If a circuit must pass through a wall, use fixed wiring installed in conduit or an approved raceway, with appropriate terminations. The other options describe uses that are not consistent with how flexible cords are intended to be used—elevator cables are heavy-duty fixed cables, data processing cables are typically fixed building wiring, and cords aren’t used to prevent transmission of vibration.