Overhead service locations: If it is impractical to locate the service head above the point of attachment, the point of attachment shall be no further than how many inches from the service head?

Overhead service locations: If it is impractical to locate the service head above the point of attachment, the point of attachment shall be no further than how many inches from the service head?

• A. 12 inches
• B. 48 inches
• C. 24 inches
• D. 36 inches

Answer: (C)

The main idea is the maximum allowed offset between the service head and where the service conductors attach to the building when the head can’t be placed directly above. The code sets that maximum at 24 inches. So if you can’t locate the service head directly above the point of attachment, the attachment point must be within 24 inches of the service head. This keeps the service run manageable, helps with proper strain relief and weatherproofing at the entry, and ensures the conductors are protected and easy to service. Distances greater than 24 inches aren’t permitted, while 12 inches would still be acceptable (it just isn’t the maximum allowed). The 36- or 48-inch options would exceed the limit and wouldn’t meet the requirement.

The main idea is the maximum allowed offset between the service head and where the service conductors attach to the building when the head can’t be placed directly above. The code sets that maximum at 24 inches. So if you can’t locate the service head directly above the point of attachment, the attachment point must be within 24 inches of the service head. This keeps the service run manageable, helps with proper strain relief and weatherproofing at the entry, and ensures the conductors are protected and easy to service.

Distances greater than 24 inches aren’t permitted, while 12 inches would still be acceptable (it just isn’t the maximum allowed). The 36- or 48-inch options would exceed the limit and wouldn’t meet the requirement.