HEIGHT ABOVE THE GROUND OF OVERHEAD LINES
| Nominal voltages | Over Roads | Along Roads | Over Other Locations Accessible to Vehicular Traffic | Over Other locations inaccessible to vehicular traffic |
| Not exceeding 1000 Volts | 5.5 m | 4.9 m | 4.9 m | 4.6 m |
| Exceeding 1000 Volts but not exceeding 11,000 Volts | 6.1 m | 5.2 m | 5.2 m | 4.6 m |
| Exceeding 11,000 Volts but not exceeding 33,000 Volts | 6.4 m | 6.1 m | 6.1 m | 4.9 m |
| Exceeding 33,000 Volts but not exceeding 132,000 Volts | 6.7 m | 6.7 m | 6.7 m | 6.7 m |
| Exceeding 132,000 Volts but not exceeding 220,000 Volts | 7.0 m | 7.0 m | 7.0 m | 7.0 m |