What is a requirement for service disconnecting means as per the NEC?

The requirement that service disconnecting means must be readily accessible and located at the building entrance is rooted in ensuring safety and convenience. This location allows for quick access to the disconnecting means in emergency situations, such as during a fire or electrical malfunction, where immediate action may be necessary to prevent further danger or damage. By positioning the disconnect at the building entrance, it enables emergency responders to access the service disconnect quickly without having to navigate through multiple areas of the structure.

Additionally, this requirement aligns with the NEC's emphasis on maintaining safe and efficient electrical systems. Readily accessible disconnects ensure that anyone authorized or trained to use them can do so without obstruction. This principle helps ensure that the electrical system can be de-energized promptly, improving safety for both the occupants and emergency personnel.