Which device is specifically mentioned as needing to interrupt the load served in a meter disconnect switch?

The meter disconnect switch is specifically mentioned in the National Electrical Code (NEC) because it serves a vital role in ensuring safety and control in an electrical system. This switch allows for the disconnection of the electrical load from the utility supply, facilitating the safe maintenance and operation of electrical equipment without risking exposure to live wires.

By requiring a dedicated device like the meter disconnect switch to interrupt the load, the NEC emphasizes the importance of having an easily accessible and identifiable means for utility personnel or technicians to safely disconnect power. This is crucial in situations where maintenance is necessary, or when there is a need to ensure that the electrical system can be worked on safely.

While devices such as circuit breakers and overcurrent relays play important roles in protecting electrical circuits from overloads and faults, they do not specifically serve the function of disconnection from the utility at the meter point as a meter disconnect switch does. The meter disconnect switch is intended to ensure full disconnection of the load before any maintenance or servicing work is performed and provides a standardized point of disconnection that can be recognized and utilized by those working on the electrical system.