What is the maximum height above the floor for the center of the grip of the operating handle of a switch or circuit breaker in the highest position?

What is the maximum height above the floor for the center of the grip of the operating handle of a switch or circuit breaker in the highest position?

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

Answer: (C)

This tests how high controls must be reachable in normal operation. The operating handle’s center of grip, when the handle is in its highest position, must not exceed a certain height above the floor so a person standing on the floor can reach and operate it without extra equipment. The maximum allowed is six feet seven inches. Measuring to the center of the grip accounts for different handle shapes, giving a consistent standard across devices. Heights lower than that are acceptable but not the maximum, while higher heights (like six feet eight inches) would exceed the limit and aren’t permitted.

This tests how high controls must be reachable in normal operation. The operating handle’s center of grip, when the handle is in its highest position, must not exceed a certain height above the floor so a person standing on the floor can reach and operate it without extra equipment. The maximum allowed is six feet seven inches. Measuring to the center of the grip accounts for different handle shapes, giving a consistent standard across devices. Heights lower than that are acceptable but not the maximum, while higher heights (like six feet eight inches) would exceed the limit and aren’t permitted.