Standard: New Zealand Electrical Code:
Min Safe Distance between Buildings and Overhead Line:
Voltage
|
Pole
|
Tower
|
| 11 kV to 33 kV |
2 Meter
|
2 Meter
|
| 33 kV to 66 kV |
6 Meter
|
6 Meter
|
| 66 kV and Above |
8 Meter
|
8 Meter
|
Min Safe Distance for excavation near Overhead Line:
Description of Clearance
|
From Pole (Min)
|
From Tower (min)
|
| Excavation in land more than 750mm depth |
8 Meter
|
12 Meter
|
| Excavation in land up to750mm depth |
2.2 to 5 Meter
|
6 to12 Meter
|
| Excavation in land up to300mm depth |
2.2 Meter
|
6 Meter
|
| Construction near 11KV to 33KV Line |
2.2 Meter
|
6 Meter
|
| Construction near 33KV to 66KV Line |
6 Meter
|
9 Meter
|
| Construction near 66KV and more |
8 Meter
|
12 Meter
|
| Wire Fence near 1KV to 66KV Line |
2.2 Meter
|
2.2 Meter
|
| Wire Fence near 66KV and more |
5 Meter
|
5 Meter
|
Min Safe Distance for Tower Carin near Electrical Tower:
Description of Clearance
|
Distance (Min)
|
| Mobile Carin movement |
4.0 Meter
|
| Tower Carin movement |
4.0 Meter
|
| Carin movement |
4.0 Meter
|
| Moving Activity above height of Tower |
4.0 Meter
|
| Hedge Cutter movement |
4.0 Meter
|
Min Safe Vertical Distance above Railway Track:
Description of Clearance
|
Distance (Min)
|
| Earthed conductors |
5.5 Meter
|
| Stay wires |
5.5 Meter
|
| Conductors up to 33 kV |
6.5 Meter
|
| Conductors above 33 kV to 220 kV |
7.5 Meter
|
| Conductors above 220 kV. |
8 Meter
|
Min Distance between two Conductors on Same Supports:
High Voltage Circuit
|
High Voltage Circuit
|
Distance between circuits(min)
|
Up to 33 KV
|
Up to 1KV
|
1.0 Meter
|
Up to 33 KV
|
More than 1KV
|
1.2 Meter
|
33 KV to 110 KV
|
Up to 1KV
|
1.5 Meter
|
33 KV to 110 KV
|
More than 1KV
|
2.0 Meter
|
More than 110 KV
|
All
|
2.5 Meter
|
Min Distance between two Conductors on Different Supports:
High Voltage Circuit
|
Distance (min)
|
Up to 1 KV
|
0.6 Meter
|
1 KV to 33 KV
|
1.2 Meter
|
33 KV to 66 KV
|
1.8 Meter
|
110 KV
|
2.4 Meter
|
More than 220 KV
|
2.8 Meter
|
Min Safety Distance from Electrical Apparatuses:
Description of Clearance
|
Distance (min)
|
Passage In front of Metal Clad Switchgear (UP to HV)
|
1.0 Meter wide 2.5 Height
|
Passage In rear or side of Metal Clad Switchgear (UP to HV)
|
1.0 Meter wide 2.2 Height
|
Passage at any side of Metal Clad Switch gear containing Bare conductor (UP to HV)
|
0.8 Meter wide 2.2 Height
|
Min Approach Distance for Non-Competent Person near exposed Live Parts:
Voltage
|
Distance (min)
|
| Below 110 kV |
4.0 Meter
|
| 220 kV and above |
6.0 Meter
|
Min Approach Distance for Competent Person near exposed Live Parts:
Voltage
|
Distance (min)
|
| Below 1 kV |
0.5 Meter
|
| 11 kV |
1.5 Meter
|
| 22 kV |
2.0 Meter
|
| 33 kV |
2.5 Meter
|
| 66 kV |
3.0 Meter
|
| 110 kV |
4.0 Meter
|
| 220 kV and above |
6.0 Meter
|
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