Nom.
Cross-
Section
Area

Unarmoured Cables

Aluminium Wire Armoured Cables

Nom.
Insulation Thickness

Copper Wire Screen Area

Nom.
Sheath
Thickness

Approx. Overall Diameter

Approx. Weight

Copper Tape
Screen
Area

Nom.
Bedding
Thickness

Nom. Armour Wire Diameter

Nom.
Sheath Thickness

Approx. Overall Diameter

Approx.
Weight

Cu

AL

Cu

AL

mm2

mm

mm2

mm

mm

kg/km

mm2

mm

mm

mm

mm

kg/km

25

3.4

16

1.5

22.1

960

740

3.8

1.2

1.6

1.8

28.1

1300

780

35

3.4

16

1.6

23.3

1060

790

4.1

1.2

1.6

1.8

29.1

1400

1180

50

3.4

16

1.7

24.4

1160

840

4.4

1.2

1.6

1.8

30.2

1600

1280

70

3.4

16

1.7

26.0

1370

930

4.7

1.2

1.6

1.9

32.0

1840

1400

95

3.4

16

1.8

27.8

1640

1040

5.2

1.2

1.6

1.9

33.6

2130

1530

120

3.4

16

1.8

29.2

1900

1140

5.5

1.2

1.6

2.0

35.2

2430

1670

150

3.4

25

1.9

31.1

2220

1280

5.8

1.2

1.6

2.1

37.9

2870

1930

185

3.4

25

1.9

32.6

2570

1410

6.2

1.2

2.0

2.1

39.4

3240

2080

240

3.4

25

2.0

35.3

3130

1610

6.8

1.2

2.0

2.2

42.1

3490

2330

300

3.4

25

2.1

37.5

3730

1850

7.3

1.2

2.0

2.2

44.1

4490

2560

400

3.4

35

2.2

41.4

4730

2200

8.0

1.2

2.0

2.4

48.2

5589

3040

500

3.4

35

2.3

44.0

5700

2600

8.6

1.3

2.5

2.5

52.0

6780

3680

630

3.4

35

2.4

49.2

7010

3020

9.5

1.4

2.5

2.6

57.4

8230

4200

Nom.
Cross-
Section
Area

Unarmoured Cables

Aluminium
Wire
Armoured Cables

D C Resistance
CU / AL

A C Resistance
CU / AL

Short Circuit Rating of
Conductor
CU / AL
1 sec

Capaci-
tance

Charging Current

Short Circuit Rating of Copper
 Wire Screen
1 sec

Short Circuit Rating of Copper Tape Screen
1 sec

Reactance

Inductance

Impedance

Trefoil

Flat Spaced

Trefoil

Flat Spaced

Trefoil

Flat Spaced

Cu

AL

Cu

AL

mm2

µΩ/m

µΩ/m

kA

pF/m

mA/m

kA

kA

µΩ/m

µΩ/m

nH/m

nH/m

µΩ/m

µΩ/m

25

727/1200

927/1538

3.6/2.3

208

0.42

2.6

0.5

146

206

440

640

936

1544

952

1554

35

524/868

668/1113

5.0/3.2

229

0.46

2.6

0.6

138

201

440

640

679

1121

695

1131

50

387/641

494/822

6.8/4.4

252

0.50

2.6

0.6

132

195

420

620

511

834

527

844

70

268/443

343/568

9.8/6.3

288

0.58

2.6

0.7

122

188

390

600

364

583

386

597

95

193/320

248/410

13.3/8.5

323

0.65

2.6

0.7

122

182

390

580

272

427

300

446

120

153/253

196//325

17.2/11.0

353

0.71

2.6

0.8

116

172

370

550

225

345

257

367

150

124/206

159/265

21.2/13.5

380

0.76

4.3

0.8

110

166

350

530

193

287

229

313

185

99.1/164

128/211

26.6/17.0

416

0.83

4.3

0.9

107

166

340

530

165

237

206

267

240

75.4/125

98/161

34.9/22.3

460

0.92

4.3

0.9

104

163

330

520

140

191

185

226

300

60.1/100

80/130

43.8/28.0

506

1.01

4.3

1.0

100

157

320

500

126

163

174

203

400

47/77.8

64/102

57.3/36.6

561

1.12

5.8

1.1

94

154

300

490

113

141

164

184

500

36.6/60.5

51/81

72.3/46.2

619

1.24

5.8

1.2

91

151

290

480

105

124

158

171

630

28.3/46.9

42/64

91.2/58.3

698

1.37

5.8

1.3

91

148

290

470

97

110

151

160