Which color wire is typically used for grounding?

The use of green or bare copper wire for grounding is a standard practice in electrical installations. Grounding wires serve a critical safety function by providing a path for electrical current to safely dissipate into the ground in case of a fault, such as a short circuit. This helps to prevent electrical shock hazards and protects equipment from damage due to surges or faults.

Green wire is specifically designated for grounding and is easily identifiable in wiring systems. Bare copper wires, which lack insulation, are also commonly employed for grounding due to their conductivity and the absence of any materials that could deteriorate or fail over time.

In electrical codes, like the National Electrical Code (NEC) in the United States, the identification of wires by color is crucial for ensuring safety and consistency in electrical systems. Other colors are typically assigned to different functions, like power or switched circuits, clearly differentiating their roles and preventing confusion during installation and maintenance. Thus, the use of green or bare copper wire for grounding is a clear and defined standard.