Standard: ETSA Utilities
Vertical Clearances between Services:
Service
|
LV Cable
|
HV Cable
|
Common Pipe
|
0.100 Meter
|
0.100 Meter
|
Gas Pipe
| 0.200 Meter | 0.200 Meter |
Sewer Pipe
| 0.300 Meter | 0.300 Meter |
Water Pipe
| 0.600 Meter | 0.600 Meter |
Horizontal Clearances between Services:
Service
|
LV Cable
|
HV Cable
|
Common Pipe
|
0.100 Meter
|
0.100 Meter
|
Gas Pipe
| 0.200 Meter | 0.200 Meter |
Sewer Pipe
| 1.0 Meter | 1.0 Meter |
Water Pipe
| 0.600 Meter | 0.600 Meter |
Standard: UK Power Networks – EI 02-0019
Cable Installation Depths:
Voltage
|
Area
|
Depth (min)
|
Low Voltage
| Footways, grass verges or private property |
0.450 Meter
|
| Carriageways (including road crossings) |
0.600 Meter
| |
| Normal agricultural land (not deep ploughing) |
1.0 Meter
| |
| Agricultural land subject to deep ploughing |
1.2 Meter
| |
11 KV to 20 KV
| Footways, grass verges or private property |
0.600 Meter
|
| Carriageways (including road crossings) |
0.750 Meter
| |
| Normal agricultural land (not deep ploughing) |
1.0 Meter
| |
| Agricultural land subject to deep ploughing |
1.2 Meter
| |
33 KV to 132 KV
| Footways, grass verges or private property |
0.900 Meter
|
| Carriageways (including road crossings) |
0.900 Meter
| |
| Normal agricultural land (not deep ploughing) |
1.0 Meter
| |
| Agricultural land subject to deep ploughing |
1.2 Meter
| |
Auxiliary Multi-core & Multi-pair Cables
| Footways, grass verges or private property |
0.450 Meter
|
| Carriageways (including road crossings) |
0.600 Meter
| |
| Normal agricultural land (not deep ploughing) |
1.0 Meter
| |
| Agricultural land subject to deep ploughing |
1.2 Meter
| |
| On Cable Ladder for LV to HV | The Horizontal clearance between cables on cable ladders |
2X Dia of Cable of Largest Cable or min 150 mm
|
| The clearance from a supporting wall |
20 mm
| |
| The vertical clearance between cables is greater |
150 mm
| |
| If the number of cables > 4, they are to be installed in a horizontal |
Minimum Approach Distance of Crane or Moving Part from Live Conductor:
Voltage
|
Without Safety Observation
|
For ordinary Person
| |
Un insulated portions
|
Insulated portions
| ||
Upto1KV
|
2 Meter
|
1.0 Meter
|
3.0 Meter
|
11 KV
|
2 Meter
|
1.4 Meter
|
3.0 Meter
|
22 KV
|
2.4 Meter
|
2 Meter
|
3.0 Meter
|
33 KV
|
2.4 Meter
|
2 Meter
|
3.0 Meter
|
66 KV
|
2.8 Meter
|
2 Meter
|
3.0 Meter
|
132 KV
|
3.0 Meter
|
3.0 Meter
|
3.0 Meter
|
220 KV
|
4.8 Meter
|
4.8 Meter
|
6.0 Meter
|
330 KV
|
6.0 Meter
|
6.0 Meter
|
6.0 Meter
|
500 KV
|
8.0 Meter
|
8.0 Meter
|
8.0 Meter
|
Minimum Fixed Clearances for Electrical Apparatus (Isolation Points):
Voltage
|
Fixed Clearance
|
Up to 11Kv
|
0.320 Meter
|
11KV to 33KV
|
0.320 Meter
|
33KV to 66KV
|
0.630 Meter
|
66KV to 132KV
|
1.1 Meter
|
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