What color insulation is used for grounding wires in residential wiring?

Grounding wires in residential wiring are typically insulated with green or are bare copper. The green insulation, or the absence of insulation in the case of bare copper, is a standard safety convention that distinguishes grounding conductors from other electrical wires. This color coding helps electricians and anyone working with electrical systems to easily identify grounding wires, ensuring proper handling and reducing the risk of electrical hazards.

Using green or bare copper for grounding provides clear visual cues that these wires serve a critical function in protecting people and equipment from electrical faults. Grounding wires provide a path for electrical current to safely return to the ground in case of a fault, helping to prevent electric shock and equipment damage. Recognizing these wires by their distinctive color helps uphold safety standards in electrical installations.