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Nominal cross sectional area
Nominal thickness of Insulation
Nominal thickness of Outer sheath
Approx overall diameter
Max. DC conductor resistance at 20°C
CURRENT RATINGS
Direct in Ground
In Duct
In Air
2 cables
3 cables
Sq. mm
mm
Ohm/km
Amps.
1.5
0.8
1.8
7.4
18.1
21
17
19
18
15
2.5*
0.9
8.0
12.1
28
24
25
4*
1.0
8.7
7.41
36
31
33
30
32
27
6
9.2
4.61
44
39
42
37
41
35
10*
10.0
3.08
54
51
56
47
16
11.5
1.91
75
66
71
65
72
64
1.2
12.9
1.20
97
86
93
84
99
14.0
0.868
120
100
110
105
50
1.4
15.2
0.641
145
130
115
150
70
17.0
0.443
170
140
155
135
185
95
1.6
2.0
19.4
0.320
205
175
180
215
190
20.9
0.253
230
195
200
240
220
22.8
0.206
265
270
250
25.0
0.164
300
210
305
290
2.2
27.9
0.125
335
225
350
2.4
30.9
0.100
370
295
245
395
380
400
2.6
34.1
0.0778
410
325
275
455
435
500
3.0
37.9
0.0605
345
355
490
480
630
3.4
42.9
0.0469
485
390
320
560
550
800
49.0
0.0367
525
440
420
650
640
1000
2.8
53.9
0.0291
570
445
735
720
Nominal Thickness of Insulation
Minimum thickness of Inner sheath
Armour
Max DC conductor resistance at 20° C
Galv. Round Steel Wire Nominal diameter
Galv. Flat Steel Strip Nominal thickness
mm.
0.3
_
13.6
-
14.8
16.2
6*
17.2
40
34
18.3
55
45
19.7
58
59
21.2
90
76
78
22.9
92
25.6
125
28.2
160
32.1
0.4
34.5
37.5
41.4
0.5
46.8
51.4
365
0.6
56.9
385
3.2
63.4
450
0.7
71.5
Amps
10.4
2 5*
11.6
13.0
15.6
16.5
21.0
23.7
12
26.3
30.4
32.8
1500
35.8
39.3
44.5
49.1
54.8
69.7