Bare copper wires are the most common type of wire used for grounding. … Bare copper wires connect to electrical devices, such as switches, outlets, and fixtures, as well as metal appliance frames or housings. Metal electrical boxes also need ground connection because they are made of a conductive material.

What is a bare in electricity?

An electrical conductor having no covering or electrical insulation.

What does bare copper wire mean?

Bare copper is the most commonly used type of copper wire and is often referred to with the general term “grounding wire.” It does not have any sort of protective coating, however, the lack of insulation allows bare copper to have the best conductive properties.