USEFUL TECHNICAL INFORMATION FOR PUBLIC

Clearance above Ground of the Lowest Conductor: No conductor of an overhead line, including service lines, shall or any part thereof be at a height of less than.

  Erected across a street Erected along any street Erected elsewhere
For Low/ Medium Voltage 5.8 meters (19ft) 5.5 meters (18ft) --
For High Voltage 6.1 meters (20ft) 5.8 meters (19ft) --
For lines upto 11000 Volts -- -- 15ft
-- -- -- 5.2 meters (17 ft)

Clearance from buildings of low and medium voltage lines and service lines. Where a low or medium voltage line passes above or adjacent to or terminates on any building, the following minimum clearance from any accessible point, on the basis of maximum sage, shall be observed.

For any Flat Roof, Open Balcony, Veranda, Roof & Lean to Roof
When the line passes above the building, a vertical clearance of 2.5meters(8 ft) from the highest point
When the line passes adjacent to the building, a horizontal clearance of 1.2 meters (4 ft) from the nearest point
For Pitched Roof
When the line passes above the building, a vertical clearance of 2.5 meters (8 ft) immediately under the lines
When the line passes adjacent to the building a horizontal clearance of 1.2 meters (4ft). For high voltage lines upto and including 33KV, 3.7 meters(12 ft)

The horizontal clearance between the nearest conductor and any part of such building shall, on the basis of maximum deflection due to pressure, be not less than:

For Voltage Lines upto 11KV 1.2 meters (4 ft)
For High Voltage Lines above 11KV & upto 33KV 2.0 meters (6.5 ft)
For Extra-high Voltage Lines 2.0 + 0.3 meters for every 33KV or part thereof.