Nominal
Area of
Conductor |
Unarmoured cables |
Hard drawn aluminium wire armoured cable |
Max dc. Resistance
at 20°c |
Approx.
Capacit
Ance |
Conductor
Short circuit
Rating for one second |
Standard
Packing length with +-5%
Tolerance |
Approx
Overall
Diameter |
Current rating |
Approx
Overall
Diameter |
Current rating |
Direct
In ground |
In
Air |
Direct
In ground |
In air |
Solid
Bonded |
Single
Point
Bonded |
Solid
Bonded |
Single
Point
Bonded |
Sqmm. |
Mm. |
Amp |
Amp |
Mm |
Amp |
Amp |
Amp |
Amp |
Ohm/km |
Mfd/km |
Ka |
Mtrs. |
25
35 |
23.0
24.0 |
104
124 |
118
147 |
25.0
26.0 |
108
129 |
108
129 |
129
156 |
129
156 |
1.20
0.868 |
0.20
0.22 |
2.35
3.29 |
500
500 |
50
70 |
25.0
26.5 |
145
177 |
176
220 |
27.0
28.5 |
151
184 |
152
185 |
187
232 |
187
233 |
0.641
0.443 |
0.24
0.27 |
4.70
6.58 |
500
500 |
95
120 |
29.0
30.0 |
212
241 |
289
314 |
31.0
33.0 |
220
248 |
221
250 |
283
326 |
285
329 |
0.320
0.253 |
0.30
0.34 |
8.93
11.28 |
500
500 |
150
185
240 |
31.5
34.0
36.0 |
270
304
353 |
356
410
489 |
34.0
36.5
39.0 |
277
312
359 |
280
318
368 |
369
427
504 |
373
434
516 |
0.206
0.164
0.125 |
0.37
0.40
0.46 |
14.10
17.39
22.56 |
500
500
500 |
300 |
38.5 |
399 |
564 |
41.0 |
402 |
415 |
575 |
592 |
0.100 |
0.50 |
28.20 |
500 |
400 |
41.5 |
457 |
663 |
44.5 |
452 |
472 |
664 |
690 |
0.0778 |
0.55 |
37.60 |
500 |
500
630 |
44.5
48.5 |
520
591 |
775
902 |
47.5
51.5 |
502
559 |
631
600 |
756
863 |
794
921 |
0.0605
0.0469 |
0.61
0.68 |
47.00
59.22 |
500
500 |
800
1000 |
53.5
60.0 |
670
742 |
1059
1202 |
68.0
65.0 |
603
648 |
673
738 |
979
1079 |
1081
1215 |
0.0367
0.0291 |
0.82
0.90 |
75.20
94.00 |
500
500 |