What is the minimum vertical clearance for service-drop cables at electrical service entrances to buildings?

The minimum vertical clearance for service-drop cables at electrical service entrances to buildings is established to ensure safety and to prevent accidental contact with the cables. A clearance of 10 feet is required to minimize the risk of electrical hazards, particularly for pedestrians and vehicles that may be in the vicinity of the service-drop cables. This height helps to protect people, as well as equipment and structures, from potential electrical shocks or damage resulting from low-hanging utility wires.

The specified clearance is also important for maintaining a safe working environment for utility workers who may need to perform maintenance on the equipment. By adhering to this height requirement, the risk of accidental contact with the cables is significantly reduced, ensuring a safer environment around electrical service entrances. This standard is referenced in the National Electrical Code (NEC), which outlines safety requirements for electrical installations and helps to ensure consistency in electrical infrastructure.