A) IEC - 207
Cross Sectional Area
Equivalent Copper Area
Conductor
Weight
Breaking Stress
Breaking load
D.C. resistance at 20°C
Rating (max.)
Nominal
Actual
No. of wires conductor
Nominal wire Diameter
Diameter conductor (approx.)
(approx.)
Before stranding
After stranding
After stranding
Strand
Conductor
mm
2
mm
2
mm
2
mm
mm
kg/km
kg/mm
2
kg/mm
2
kg
kg
ohm/km
amp
16
15.89
10
7
1.7
5.1
43.5
19.2
18.2
41.31
290
1.91
87
25
25.18
15
7
2.14
6.42
68.94
18.4
17.5
62.94
440
1.2
112
35
32.92
21
7
2.52
7.56
95.6
18
17.1
85.29
597
0.868
138
* 50
49.48
31
7
3
9
135.49
17.2
16.3
115.22
810
0.641
172
50
48.36
30
19
1.8
9
133
18.8
17.9
45.55
865
0.641
172
70
68.34
41
19
2.14
10.7
188
18.4
17.5
62.94
1196
0.443
206
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