Which color indicates a ground wire in residential wiring?

In residential wiring, the color green or bare wire is used to indicate a ground wire. The ground wire serves a crucial safety function by providing a path for electrical current to safely dissipate into the ground in the event of a fault. This helps to prevent electrical shocks and fires by ensuring that excess electricity doesn't accumulate in appliances or wiring.

The use of green or bare wire for grounding is standardized in the National Electrical Code (NEC), which aims to promote safety in electrical wiring practices across various regions, including Colorado. This clarity in color coding helps electricians and homeowners alike identify wiring connections correctly, ensuring proper installation and maintenance.

Other colors, such as black and red, are typically used for hot wires, carrying current to the load, while white wires generally indicate neutral connections. This standardized color-coding system is essential for anyone working with electrical systems, as it enhances safety and reduces the risk of accidents.