Nominal

Sectional

Area

Number

Diameter

of Wire

Overall

Diameter

Maximum DC

Resistance

at 20

Breaking

Strength

Allowable Ampacities

in Free Air

Approx. Weight

mm

No./mm

mm

Ω/km

Kgf

A

kg/km

10

7/1.35

4.05

1.8054

438

90

90

16

7/1.70

5.10

1.1385

694

125

143

25

7/2.14

6.42

0.7185

1076

160

227

35

7/2.52

7.56

0.5181

1459

200

314

50

7/3.02

9.06

0.3589

2095

250

452

50

19/1.78

8.90

0.3825

2021

250

428

70

19/2.14

10.70

0.2646

2921

310

618

95

19/2.52

12.60

0.1918

3961

380

858

120

19/2.85

14.25

0.1492

5067

440

1097

150

37/2.25

15.75

0.1238

6289

510

1334

185

37/2.52

17.64

0.0981

7713

585

1673

240

61/2.25

20.25

0.0752

10369

700

2200

300

61/2.52

22.68

0.0600

12717

800

2760

400

61/2.85

25.65

0.0469

16266

900

3350

500

61/3.20

28.80

0.0370

20506

1110

4451