What is required for the grounding terminal on a wiring device like a receptacle?

The grounding terminal on a wiring device like a receptacle must be green in color and have a specific design, such as a hexagonal head or nut, to ensure secure and reliable grounding connections. The green color is a universally recognized standard in electrical wiring that indicates a grounding component, making it easily identifiable. Additionally, the hexagonal head or nut feature aids in the installation process, allowing for adequate tightening and reducing the likelihood of a loose connection, which is critical for the safety and functionality of the electrical system.

This design helps prevent mishaps during maintenance or upgrades that could compromise the integrity of the grounding. Grounding is essential for electrical safety as it provides a path for fault current to prevent electric shock and equipment damage. The requirement of both color and specific mechanical features helps maintain compliance with electrical code standards and contributes to the overall safety practices in electrical installations.