Determining the safety of overhead power lines requires considering three factors: voltage level, type of area (e.g., residential or non-residential), and nearby objects (e.g., ground, buildings, trees). The specific criteria are as follows:
Vertical safety distance to the ground (under maximum sag)
This distance is the minimum height of the power line above the ground when it is at its maximum sag, directly affecting pedestrian and vehicle safety:
Lines below 1kV
Residential areas: 6 meters
Non-residential areas: 5 meters
Areas with poor traffic: 4 meters
1–1 0kV Lines
Residential Areas: 6.5 meters
Non-Residential Areas: 5.5 meters
Difficult-to-access Areas: 4.5 meters
35–110kV Lines
Residential Areas: 7 meters
Non-Residential Areas: 6 meters
Difficult-to-access Areas: 5 meters
220kV Lines
Residential Areas: 7.5 meters
Non-Residential Areas: 6.5 meters
Difficult-to-access Areas: 5.5 meters
500kV and Above Lines
Residential Areas: 8.5 meters
Non-Residential Areas: 7.5 meters
Difficult-to-access Areas: 6.5 meters
Determining the safety of overhead power lines requires considering three factors: voltage level, type of area (e.g., residential or non-residential), and nearby objects (e.g., ground, buildings, trees). The specific criteria are as follows:
Vertical safety distance to the ground (under maximum sag)
This distance is the minimum height of the power line above the ground when it is at its maximum sag, directly affecting pedestrian and vehicle safety:
Lines below 1kV
Residential areas: 6 meters
Non-residential areas: 5 meters
Areas with poor traffic: 4 meters
1–1 0kV Lines
Residential Areas: 6.5 meters
Non-Residential Areas: 5.5 meters
Difficult-to-access Areas: 4.5 meters
35–110kV Lines
Residential Areas: 7 meters
Non-Residential Areas: 6 meters
Difficult-to-access Areas: 5 meters
220kV Lines
Residential Areas: 7.5 meters
Non-Residential Areas: 6.5 meters
Difficult-to-access Areas: 5.5 meters
500kV and Above Lines
Residential Areas: 8.5 meters
Non-Residential Areas: 7.5 meters
Difficult-to-access Areas: 6.5 meters