Where circuits from the input or output terminals of energy storage components pass through a wall, floor, or ceiling, a disconnecting means shall be provided within sight of the energy storage component and be ___.

Where circuits from the input or output terminals of energy storage components pass through a wall, floor, or ceiling, a disconnecting means shall be provided within sight of the energy storage component and be ___.

• A. Accessible
• B. Covered
• C. Lockable
• D. Readily accessible

Answer: (D)

The requirement is about immediate, visible control for isolating energy storage circuits. When the supply or return paths of an energy storage component pass through walls, floors, or ceilings, you must have a disconnecting means that you can see from the energy storage component and that you can operate readily. This pairing—within sight and readily accessible—ensures that a person can quickly confirm the status and switch off the energy storage system without obstacles or delays, which is crucial for safe maintenance and emergency shutoffs. Readily accessible means the disconnect can be reached and operated quickly without needing to remove barriers, climb, or use tools. That specificity is why this option is preferred over simply "accessible" or over "covered" or "lockable"—those either don’t guarantee quick operation or would impede immediate isolation.

The requirement is about immediate, visible control for isolating energy storage circuits. When the supply or return paths of an energy storage component pass through walls, floors, or ceilings, you must have a disconnecting means that you can see from the energy storage component and that you can operate readily. This pairing—within sight and readily accessible—ensures that a person can quickly confirm the status and switch off the energy storage system without obstacles or delays, which is crucial for safe maintenance and emergency shutoffs.

Readily accessible means the disconnect can be reached and operated quickly without needing to remove barriers, climb, or use tools. That specificity is why this option is preferred over simply "accessible" or over "covered" or "lockable"—those either don’t guarantee quick operation or would impede immediate isolation.