What is the standard color used for a ground wire?

The standard color used for a ground wire is green. This color coding is widely recognized in electrical wiring practices, particularly in the United States and many other countries, as it designates a safety ground. The purpose of the ground wire is to provide a return path for electrical current in the event of a fault or short-circuiting, thus preventing electric shock and ensuring safety for both equipment and individuals.

Using green for ground wiring helps to avoid confusion with other wire types that carry power or serve different functions. For example, the color white is typically used for neutral wires, while colors like yellow or blue are designated for other purposes, such as secondary circuits or power conductors. Using clearly defined colors allows electricians and technicians to quickly identify the purpose of each wire, promoting safety and efficiency when performing electrical tasks.