In standard electrical wiring, which color indicates grounding?

• A. Green
• B. Blue
• C. White
• D. Orange

Answer: (A)

Grounding is identified by the color green (often green with a yellow stripe) in standard electrical wiring. This color marks the equipment grounding conductor, which provides a safe path for fault current to earth and helps tripping protective devices to prevent shock. Green makes the grounding wire easily recognizable across cables and installations. By contrast, white indicates neutral, blue is commonly used for a hot conductor in some circuits or travelers, and orange is used for other hot conductors in multi-conductor cables or special systems. So green is used to indicate grounding because it signals safety earth and bonding.