How high off the floor must wiring be protected?

• A. 7 feet
• B. 6 feet
• C. 8 feet
• D. 9 feet

Answer: (A)

Wiring should be protected at a height that keeps it out of easy reach and away from possible physical damage. Seven feet above the finished floor is the commonly used minimum because it reliably blocks most accidental contact by people and by objects like carts or ladders, while still being practical for standard room heights.

Six feet would leave wiring within easy reach of many people and equipment, increasing the chance of accidental contact. Eight or nine feet are higher than necessary for safety in typical spaces and add unnecessary installation height and cost without added protection. Seven feet strikes the right balance, providing protection in everyday environments.