National Electrical Code and utility safety regulations mandate strict minimum vertical clearance heights for overhead service drop cables to prevent accidental contact with pedestrians, vehicles, and structures. Specifically, where a service drop passes over pedestrian walkways, sidewalks, and residential yards, the lowest point of the cable must maintain at least 10 feet of clearance above the ground. If the overhead lines cross residential driveways, alleyways, or parking lots subject to vehicle traffic, the minimum required height increases to 12 feet. Furthermore, if crossing public streets, roads, or commercial driveways, the clearance requirement jumps to 15 to 18 feet to ensure safe passage for large trucks and emergency vehicles.
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