Electrical disconnecting devices shall be within a distance of the equipment they serve, not to exceed how many feet?

Electrical disconnecting devices shall be within a distance of the equipment they serve, not to exceed how many feet?

• A. 15 feet
• B. 20 feet
• C. 25 feet
• D. 30 feet

Answer: (C)

Having the disconnecting device close to the equipment it serves is essential for safety. If power can only be shut off from far away, a worker might be exposed to energized parts longer during maintenance or in an emergency, increasing the risk of shock or arc flash. The rule sets a practical maximum distance of twenty-five feet, ensuring the disconnect is close enough to be reached quickly and easily while still allowing reasonable installation. Distances smaller than that, like fifteen or twenty feet, meet the spirit of proximity, but thirty feet could be too far to guarantee a rapid de-energization when needed. So the twenty-five-foot limit is the standard for keeping shutoff access timely and reliable.

Having the disconnecting device close to the equipment it serves is essential for safety. If power can only be shut off from far away, a worker might be exposed to energized parts longer during maintenance or in an emergency, increasing the risk of shock or arc flash. The rule sets a practical maximum distance of twenty-five feet, ensuring the disconnect is close enough to be reached quickly and easily while still allowing reasonable installation. Distances smaller than that, like fifteen or twenty feet, meet the spirit of proximity, but thirty feet could be too far to guarantee a rapid de-energization when needed. So the twenty-five-foot limit is the standard for keeping shutoff access timely and reliable.