According to the NEC, ground wires should be colored GREEN. Which of the following lists only non-green colors?

According to the NEC, ground wires should be colored GREEN. Which of the following lists only non-green colors?

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

Answer: (D)

Ground wires are green in the NEC to identify the equipment grounding conductor, making it easy to distinguish from hot or neutral conductors. Any color other than green is considered non-green, such as red, blue, or yellow. Because green is reserved for grounding, a color that is green would not fit the idea of a non-green color. So if you’re asked to pick a non-green color, you’d select red, blue, or yellow; green itself is the color used for grounding, not a non-green color.

Ground wires are green in the NEC to identify the equipment grounding conductor, making it easy to distinguish from hot or neutral conductors. Any color other than green is considered non-green, such as red, blue, or yellow. Because green is reserved for grounding, a color that is green would not fit the idea of a non-green color. So if you’re asked to pick a non-green color, you’d select red, blue, or yellow; green itself is the color used for grounding, not a non-green color.