What is the required distance from a building for the ground ring?

• A. 3 feet
• B. 5 feet
• C. 10 feet
• D. 1 foot

Answer: (A)

Positioning the ground ring a set distance from the building ensures the grounding system sits properly in the earth and isn’t influenced by the building’s structure or footing. The required distance is three feet. This separation helps prevent the ring from being connected or biased by the building’s metal components, keeps soil impedance readings accurate, and makes maintenance easier. Distances larger than three feet still meet the rule, but they’re not the defined minimum; a distance that's too close, such as one foot, would not meet the standard.