What is a general rule regarding meter sockets?

The correct choice states that meter sockets remain energized on the source side until they are disconnected. This is a critical safety consideration when working with electrical systems. Meter sockets typically serve as the point where the utility's power supply connects to the customer's electrical system. As long as the utility power is supplied, the terminals on the source side of the meter socket remain live and energized, posing a risk of electric shock if they are touched or improperly handled.

Understanding the energized state of meter sockets is essential for anyone working with electrical systems, as it emphasizes the importance of proper safety protocols, such as using personal protective equipment and following lockout/tagout procedures when maintenance or repairs are required. This knowledge helps prevent accidents and ensures that individuals are aware of the potential hazards when dealing with electrical installations.