Service drops installed over a roof must have a vertical clearance of what minimum height above the roof surface?

The minimum height of 8 feet for service drops installed over a roof surface is established to ensure safety and accessibility. This clearance is crucial because it prevents accidental contact with the service drop by anyone working on or venturing onto the roof. Maintaining this height also protects the electric lines from damage due to falling debris or roof maintenance activities.

It is essential for the safety of both workers and the general public that the clearance is sufficient to allow for adequate operation and maintenance of roof areas without risking electrical hazards. This standard is typically outlined in electrical codes or guidelines to promote safe practices across various environments, particularly in urban areas like New York City where service drops are common on buildings.