There are 3 organizations, the National Electrical Safety Code, National Electric Code, and the State of Texas, that influence these general standards. When the standard varies, the strictest option is required. If code standards are in question, members are encouraged to contact their local code authority.
Vertical Clearance Requirements for Energized Lines from 0 to 750 volts*
| Location | Height |
|---|---|
| Railroads | 24 feet |
| Public streets, alleys, roads and highways | 22 feet |
| Commercial driveways, parking lots & other areas subject to truck traffic | 22 feet |
| Residential driveways | 16 feet |
| Other land with vehicle traffic | 16 feet |
| Spaces or ways with pedestrian traffic | 12 feet |
| Spaces with limited building height (300 volts or less) | No less than 10.5 feet |
| Rural land beside roadway | 14 feet |
| Urban land beside roadway | 16 feet |
| Swimming areas | 22.5 feet |
| Building roofs (no pedestrians) | 3.5 feet |
| Building roofs (with pedestrians) | 11 feet |
| Signs, chimneys, antennas, tanks | 3.5 feet |
*For clearance information on lines energized above 750 volts, contact BEC.