What is the bend radius specified for the ground ring?

• A. 6 inches
• B. 8 inches
• C. 10 inches
• D. 12 inches

Answer: (B)

Focusing on how the ground ring is formed, the bend radius is chosen to keep the grounding conductor from experiencing sharp turns that could kink or fatigue it. An eight‑inch radius provides a smooth, gradual bend that preserves the conductor’s integrity and maintains a solid, low-impedance path around the ring. This helps ensure reliable grounding performance under environmental and loading conditions.

If the bend were tighter, like six inches, the conductor would endure more mechanical stress at the bend, increasing the risk of damage and future impedance changes. If it were much larger, such as ten or twelve inches, the layout would require more space without giving additional electrical benefit, making installation less efficient. Eight inches hits a practical middle ground that meets the integrity and clearance needs without unnecessary complexity.