Which of the following statements accurately describes spacing for service conductors without an outer jacket from openings?

• A. They must be at least 3 feet away
• B. They must be at least 2 feet away
• C. They must be at least 4 feet away
• D. They can be within 2 feet if shielded

Answer: (A)

Exposed service conductors without an outer jacket must maintain a safe horizontal distance from any opening in a building to prevent contact and reduce the risk of arcing. The minimum clearance specified is three feet. This distance gives space to avoid accidental contact by people inside or near the openings and provides room for safe maintenance. Shorter distances, like two feet, or relying on shielding to get closer, do not meet the required safety margin. Shielding does not justify reducing the distance because the hazard from unjacketed conductors near openings remains. So, the rule is to keep at least three feet away.