Green – In the USA, most ground wires will be green, or at least primarily green. The wiring color codes are the standard safety language of electricity. They make it easy to identify immediately which wires are live, neutral, or grounded (avoiding costly mistakes and hazardous accidents). Please refer to local regulations. Bare – If the wire is not primarily green, it may also just be a bare. The table below gives a quick snapshot of the most common electrical wire colors you can see at home. This is a general reference, not a substitute for proper testing. If you need more detailed information, continue reading this article.