STATUTORY CLEARANCE OF OH LINES


STATUTORY CLEARANCE - OH LINES
Voltage level
Above ground
From Building
Between Conductors
Across any street
Along any street
Other areas
Vertical
Horizontal
Bare
Insulated
m
m
m
m
m
m
m
230&400 Volts
5.8
5.5
4.6
4
2.5
1.2
1.219
11kV
6.1
5.8
4.6
4
3.7
1.2
1.829
22&33 kV
6.1
5.8
5.2
_
3.7
2
2.439
66 kV
6.1
6.1
6.1
_
4
2.3
3.048
110 kV
6.2
6.2
6.2
_
4.6
2.9
3.048
220 kV
7.1
7.1
7.1
_
5.5
3.8
3.048
400 kV
8.9
8.9
8.9
_
7.3
5.6
3.048
For EHT lines, the clearance above ground, shall not be less than 5.182 metre plus 0.305 metre for every 33 kV or part there of by which the voltage of the line exceeds 33 kV. Provided that the minimum clearance along or across any street shall not be less than 6.096 metres.
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