Nominal
cross
sectional
area |
Nominal
thickness
of
Insulation |
Minimum
thickness of Inner
sheath |
ARMOUR |
Nominal
thickness
of Outer
sheath |
Approx
overall
diameter |
Max. DC
conductor
resistance
at 20° C |
CURRENT RATINGS |
Galv.
Steel Wire
Nominal
diameter |
Galv. Flat
Steel Strip
Nominal
thickness |
Direct in
Ground
|
In Duct
|
In Air
|
Sq. mm |
mm |
mm. |
mm. |
mm |
mm. |
mm. |
Ohm/km |
Amps. |
Amps. |
Amps. |
1.5 |
0.8 |
0.3 |
1.4 |
_ |
1.8 |
14.9 |
18.1 |
16 |
14 |
13 |
2.5* |
0.9 |
0.3 |
1.4 |
- |
1.8 |
16.3 |
12.1 |
21 |
18 |
18 |
4* |
1.0 |
0.3 |
1.4 |
- |
1.8 |
18.0 |
7.41 |
28 |
23 |
23 |
6* |
1.0 |
0.3 |
- |
0.8 |
1.8 |
18.5 |
4.61 |
35 |
30 |
30 |
10* |
1.0 |
0.3 |
- |
0.8 |
2.0 |
20.8 |
3.08 |
46 |
39 |
40 |
16 |
1.0 |
0.3 |
- |
0.8 |
2.0 |
22.2 |
1.91 |
60 |
50 |
51 |
25 |
1.2 |
0.3 |
- |
0.8 |
2.0 |
25.8 |
1.20 |
76 |
63 |
70 |
35 |
1.2 |
0.3 |
- |
0.8 |
2.0 |
27.9 |
0.868 |
92 |
77 |
86 |
50 |
1.4 |
0.4 |
- |
0.8 |
2.2 |
32.2 |
0.641 |
110 |
95 |
105 |
70 |
1.4 |
0.4 |
- |
0.8 |
2.2 |
35.6 |
0.443 |
135 |
115 |
130 |
95 |
1.6 |
0.4 |
- |
0.8 |
2.4 |
40.7 |
0.320 |
165 |
140 |
155 |
120 |
1.6 |
0.5 |
- |
0.8 |
2.4 |
44.4 |
0.253 |
185 |
155 |
180 |
150 |
1.8 |
0.5 |
- |
0.8 |
2.6 |
48.9 |
0.206 |
210 |
175 |
205 |
185 |
2.0 |
0.6 |
- |
0.8 |
2.8 |
53.9 |
0. 164 |
235 |
200 |
240 |
240 |
2.2 |
0.6 |
- |
0.8 |
3.0 |
60.6 |
0. 125 |
275 |
235 |
280 |
300 |
2.4 |
0.7 |
- |
0.8 |
3.4 |
67.6 |
0.100 |
305 |
260 |
315 |
400 |
2.6 |
0.7 |
- |
0.8 |
3.6 |
74.7 |
0.0778 |
335 |
290 |
375 |
500 |
3.0 |
0.7 |
- |
0.8 |
4.0 |
83.8 |
0.0605 |
350 |
310 |
410 |
630 |
3.4 |
0.7 |
- |
0.8 |
4.0 |
93.6 |
0.0469 |
365 |
325 |
455 |