Conductors for Overhead Lines
Hard Drawn Copper Conductor (HDBC)

Nominal Area No of Wires in Conductor Nominal Dia of Wires in Conductor Approx. Conductor Diameter Max. Conductor Resistance at 20°C Standard Weight Max. Weight Breaking Load Min.
mm Sq # mm mm Ohm / Km Kg / Km Kg / Km N

10

14

16

 

25

32

36

 

50

70

100

 

125

150

185

7

7

3

 

7

3

7

 

7

7

7

 

19

19

18

1.35

1.60

2.65

 

2.14

3.75

2.50

 

3.00

3.55

4.30

 

2.90

3.20

3.55

4.05

4.80

5.69

 

6.42

8.05

7.50

 

9.00

10.65

12.90

 

14.50

16.00

17.75

1.823

1.298

1.104

 

0.7255

0.5514

0.5319

 

0.3694

0.2637

0.1804

 

0.1463

0.1201

0.09759

89.78

126.10

148.30

 

225.70

296.90

308.00

 

443.50

621.00

911.20

 

1130.00

1376.00

1693.00

91.88

128.90

152.00

 

230.70

304.30

314.90

 

453.40

634.70

934.30

 

1158.00

1410.00

1735.00

4129

5744

6590

 

10170

12710

14097

 

19497

26880

37640

 

48340

58690

71380

Conductor conforms to BS 125