Code

Nominal size

Wire No/dia

Complete

 diameter

Total 

cross-area

Conductor 

weight

Cable break

down load

Max.DC 

resistance 20

Packing 

length

-

mm2

Nos./mm

Mm

mm2

Kg/Km

daN

Ohm/Km

Meter+5%

Box

15

7/1.47

5.55

18.8

51

529

1.749

3000

Acacia

20

7/1.85

6.24

23.9

65

670

1.384

2500×2

Almond

25

7/2.08

7.02

30.1

82

844

1.094

2500×2

Cedat

30

7/2.34

7.62

35.5

97

995

0.9281

3200

Fir

40

7/2.77

8.85

47.8

131

1340

0.6680

2800

Hazel

50

7/2.95

9.90

59.9

164

1680

0.5498

2700

Pine

60

7/3.30

10.83

71.7

196

2010

0.4595

2350

Willow

75

7/3.91

12.12

89.8

246

2517

0.3669

2850

Oak

100

7/4.45

13.95

118.9

325

3330

0.2769

2000

Mulberry

125

19/3.18

16.9

151.1

415

4230

0.2190

2900

Ash

150

19/3.48

14.4

180.7

497

5060

0.1830

2300

Elm

175

19/3.76

18.8

211.0

580

5910

0.1568

2900

Poplar

200

37/2.87

20.09

239.0

660

6700

0.1387

2300

Sycamore

250

37/3.23

22.61

303.0

835

8490

0.1094

2000

Upas

300

37/3.53

24.71

362.1

998

10150

0.09155

2500

Yew

400

37/4.06

28.42

479.9

1323

13450

0.06908

2000