Nom.
Cross-
Section
Area

Unarmoured Cables

Aluminium Wire Armoured Cables

Nom.
Insulation
Thickness

Copper Tape Thickness

Copper Wire Screen
Area*

Nom. Sheath
Thickness

Approx.
Overall
Diameter

Approx.
Weight

Nom.
Bedding
Thickness

Armour
Wire
Size

Nom.
Sheath
Thickness

Approx.
Overall
Diameter

Approx.
Weight

CU

AL

CU

AL

mm2

mm

mm

mm2

mm

mm

kg/km

mm

mm

mm

mm

kg/km

16

3.4

0.1

16

1.8

18

450

350

1.2

1.6

1.8

24

770

670

25

3.4

0.1

16

1.8

20

560

400

1.2

1.6

1.8

25

910

750

35

3.4

0.1

16

1.8

21

680

460

1.2

1.6

1.8

26

1040

820

50

3.4

0.1

16

1.8

22

810

520

1.2

1.6

1.8

28

1190

900

70

3.4

0.1

16

1.8

24

1050

620

1.2

1.6

1.9

29

1470

1040

95

3.4

0.1

16

1.8

25

1320

730

1.2

1.6

2.0

31

1780

1190

120

3.4

0.1

16

1.8

27

1580

840

1.2

2.0

2.0

34

2150

1410

150

3.4

0.1

25

1.9

28

1880

960

1.2

2.0

2.1

35

2480

1560

185

3.4

0.1

25

1.9

30

2250

1100

1.2

2.0

2.1

37

2890

1730

240

3.4

0.1

25

2.0

33

2870

1350

1.2

2.0

2.2

40

3570

2050

300

3.4

0.1

25

2.1

35

3490

1580

1.2

2.0

2.3

42

4230

2330

400

3.4

0.1

35

2.2

39

4350

1920

1.3

2.5

2.4

47

5320

2890

500

3.4

0.1

35

2.2

39.9

5235

2240

1.4

2.5

2.5

51

6510

3530

630

3.4

0.1

35

2.3

43.7

6675

2765

1.5

2.5

2.6

56

7960

4050

800

3.4

0.1

50

2.5

48.6

8225

3330

1.5

2.5

2.7

59

9670

4850

1000

3.4

0.1

50

2.6

52.9

10210

4030

1.6

2.5

2.9

63

11710

5570

Nom.Cross-
Section
Area

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

µΩm

kA

pF/m

mA/m

kA

kA

µΩ/m

nH/m

µΩ/ m

µΩ/m

16

1150/1910

1460/2420

2.2/1.4

187

0.39

2.6

0.5

152

216

480

680

1462

2411

1478

2421

25

727/1200

927/1538

3.6/2.3

208

0.42

2.6

0.5

144

210

460

660

936

1544

952

1554

35

524/868

668/1113

5.0/3.2

229

0.46

2.6

0.6

136

200

440

640

679

1121

695

1131

50

387/641

494/822

6.8/4.4

252

0.50

2.6

0.6

131

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

47.0/77.8

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

51/81.0

72.3/46.2

619

1.24

5.8

1.2

91

151

290

480

105

124

158

171

630

28.3/46.9

42/64.0

91.2/58.3

698

1.37

5.8

1.3

91

148

290

470

97

110

151

160

800

22.1/36.7

35/55

114.4/75.0

780

1.39

8.2

1.4

88

144

280

470

92

101

147

153

1000

17.6/29.1

30/46

143.0/94.0

860

1.54

8.2

1.5

85

143

270

460

88

95

144

148