Circuit breakers and switches containing fuses shall be readily accessible and installed so that the center of the grip of the operating handle of the switch or circuit breaker, when in its highest position, is not more than ___ above the floor or working platform.

Circuit breakers and switches containing fuses shall be readily accessible and installed so that the center of the grip of the operating handle of the switch or circuit breaker, when in its highest position, is not more than ___ above the floor or working platform.

• A. 5 feet, 8 inches
• B. 6 feet
• C. 6 feet, 7 inches
• D. 6 feet, 8 inches

Answer: (C)

The key idea is reachability for operating electrical equipment. The rule sets a maximum for how high the center of the grip on the switch or circuit breaker handle can be when it’s in its highest position, so a worker on the floor or a working platform can operate it without needing a ladder. The allowed maximum is six feet seven inches above the floor, measured to the center of the grip, because different handle designs are easier to grasp at that height and still within easy reach. So six feet seven inches is the exact value that satisfies the requirement. A higher height would violate the limit, while a lower height is still acceptable but does not express the maximum allowed.

The key idea is reachability for operating electrical equipment. The rule sets a maximum for how high the center of the grip on the switch or circuit breaker handle can be when it’s in its highest position, so a worker on the floor or a working platform can operate it without needing a ladder. The allowed maximum is six feet seven inches above the floor, measured to the center of the grip, because different handle designs are easier to grasp at that height and still within easy reach.

So six feet seven inches is the exact value that satisfies the requirement. A higher height would violate the limit, while a lower height is still acceptable but does not express the maximum allowed.