What is the color code for grounding in the US?

What is the color code for grounding in the US?

• A. Green
• B. Blue
• C. Green-yellow striped
• D. Red

Answer: (C)

Color-coding for the grounding conductor in US electrical wiring is about clearly identifying the protective earth path. The grounding conductor is there to carry fault current safely to earth, so code uses green to signal safety and earth. The standard allows either a solid green insulation or green with a yellow stripe. The striped version is especially common on cables with multiple insulated conductors because the stripe makes the grounding path unmistakable at a glance, reducing the chance of mixing it up with other conductors. So when you see green-yellow striped insulation, that’s the wiring identified as the grounding conductor. Green alone can be used in some installations, but the striped variant is the reinforced, widely recognized identification in this context. Red or blue indicate hot conductors, and white indicates neutral, not grounding.

Color-coding for the grounding conductor in US electrical wiring is about clearly identifying the protective earth path. The grounding conductor is there to carry fault current safely to earth, so code uses green to signal safety and earth. The standard allows either a solid green insulation or green with a yellow stripe. The striped version is especially common on cables with multiple insulated conductors because the stripe makes the grounding path unmistakable at a glance, reducing the chance of mixing it up with other conductors. So when you see green-yellow striped insulation, that’s the wiring identified as the grounding conductor. Green alone can be used in some installations, but the striped variant is the reinforced, widely recognized identification in this context. Red or blue indicate hot conductors, and white indicates neutral, not grounding.