What is the typical requirement for service disconnect location and access?

• A. The disconnect must be readily accessible and capable of disconnecting all ungrounded conductors
• B. It must be outdoors only
• C. It must be hidden behind a lock
• D. It must be next to the main panel

Answer: (A)

The essential requirement is to have a service disconnect that is readily accessible and capable of disconnecting all ungrounded conductors. This means you must be able to reach the disconnect quickly without removing barriers, keys, or tools, so power to the entire building can be shut off promptly in an emergency or for maintenance. The disconnect must be able to interrupt all live conductors that carry current to the building, ensuring there’s no energized path left when it’s opened. It doesn’t have to be outdoors or next to the main panel, and it shouldn’t be hidden behind a lock, because any barrier to access defeats the purpose of being able to isolate the entire service safely and efficiently.