The point of attachment of overhead premises wiring to a building shall in no case be less than _____ ft above finished grade.

• A. 8
• B. 10
• C. 12
• D. 14

Answer: (B)

The distance is set to ensure safe clearance from ground-level hazards and easy maintenance access. The point where overhead premises wiring attaches to the building must be at least 10 feet above finished grade so that pedestrians, ladders, maintenance equipment, and vehicles don’t easily contact energized conductors. This 10-foot minimum provides a practical, consistent safety margin without making installations unnecessarily tall. Choosing a lower height would raise the risk of accidental contact, while higher heights aren’t required by this rule and would add unnecessary complexity unless another situation calls for it.