Minimum Size of Earthing Conductors
Minimum Size of Earthing Conductors |
|
Nominal area active
conductors mm2 |
For copper active
conductors mm2 |
For aluminium active
conductors mm2 |
|
1
|
1*
|
|
|
1.5
|
1.5*
|
|
|
2.5
|
2.5
|
|
|
4
|
2.5
|
|
|
6
|
2.5
|
2.5
|
|
10
|
4
|
2.5
|
|
16
|
6
|
4
|
|
25
|
6
|
6
|
|
35
|
10
|
6
|
|
50
|
16
|
10
|
|
70
|
25
|
10
|
|
95
|
25
|
16
|
|
120
|
35
|
25
|
|
150
|
50
|
25
|
|
185
|
70
|
35
|
|
240
|
95
|
50
|
|
300
|
120
|
70
|
|
400
|
120
|
95
|
|
500
|
120
|
95
|
|
630
|
120
|
120
|
| *Refer Wiring Rules, AS/NZS 3000 regarding 1.5 earthing conductors |