Which color combination indicates ground in electrical wiring?

• A. White
• B. Red
• C. Green & Yellow
• D. Blue

Answer: (C)

Grounding is identified by green, and in many cables you’ll see green paired with a yellow stripe. This color cue signals the protective earth path, which is there to carry fault current safely away and help prevent shock or equipment damage. In normal operation, grounding isn’t a current-carrying conductor, but it must be reliably identifiable so you can connect equipment to earth properly.

White is neutral, carrying current back to the source in a balanced circuit. Red and blue are typically used for hot conductors, carrying the live voltage. That’s why green with yellow is the correct indicator for ground—the color combination is the standard visual cue for the protective earth path.