What capability must a meter disconnect switch have to effectively serve the load?

To effectively serve the load, a meter disconnect switch must be capable of interrupting the load served. This means that the switch must be able to safely cut off the electrical supply to the connected circuit when necessary, allowing for maintenance, emergency situations, or troubleshooting without the risk of electric shock or equipment damage.

The ability to interrupt the load is essential to ensure safety and compliance with electrical codes, as it provides a means to control the power to the circuit. Additionally, this capability supports proper operation of the overall electrical system by isolating a specific load when required.

While locking capabilities, current display, and remote connection features can provide added benefits for operational efficiency and safety, they are not fundamental requirements for a disconnect switch intended to fulfill its primary purpose of load interruption.