cross-sectional area mmsq

Minimum average thickness of insulation mm

Nominal area of copper tape screen mmsq

Nominal thickness of PVC bedding

Nominal number and diameter of armoured wires no./ mm

Nominal thickness of PVC oversheath mm

Nominal overall diameter of cable mm

50

2.5

15.0

1.3

45/2.5

2.5

48.4

70

2.5

16.8

1.3

49/2.5

2.6

52.4

95

2.5

18.5

1.4

54/2.5

2.7

56.5

120

2.5

20.0

1.5

57/2.5

2.8

60.1

150

2.5

21.3

1.5

60/2.5

2.9

63.1

185

2.5

23.1

1.6

65/2.5

3

67.4

240

2.6

25.5

1.7

71/2.5

3.2

73.2

300

2.8

28.3

1.8

62/3.15

3.5

81.3

400

3.0

31.4

2.0

69/3.15

3.7

88.8

cross-sectional area mmsq

Approximate cable weight kg/m

Nominal drum length
m

Minimum bending radius mm

Nominal internal diameter of ducts mm

50

4.9

750

600

100

70

5.8

750

650

100

95

6.9

500

700

100

120

7.9

500

750

100

150

8.9

500

800

125

185

10.4

450

850

125

240

12.7

400

900

125

300

16.0

400

1000

125

400

19.4

350

1100

-

cross-sectional area mmsq

Maximum DC resistance of conductor at 20 ℃ uohms/m

Maximum AC resistance of conductor at 90 ℃ uohms/m

Reactance at 50Hz
uohms/m

Impedance at 50Hz uohms/m

Maximum Capacitace PF/m

Maximum charging current at normal voltage and frequency mA/m

50

387

494

108

506

332

0.40

70

268

343

102

358

383

0.46

95

193

248

96.2

266

432

0.52

120

153

196

93.1

217

474

0.57

150

124

159

90.8

183

511

0.61

185

99.1

128

88.1

155

562

0.67

240

75.4

98

85.9

130

602

0.72

300

60.1

80

84.7

117

622

0.75

400

47.0

64

83.2

105

648

0.78

Cross-sectional area
mmsq

Current Ratings

Short circuit ratings

Laid direct in ground
Amps

Drawn into ducts
Amps

Laid in air
Amps

One second short circuit rating of conductor
KA

One second short circuit rating of copper per core
KA

50

210

180

220

6.8

Typically
Less
Than
1kA

70

255

215

270

9.8

95

300

255

330

13.3

120

340

290

375

17.2

150

380

330

430

21.2

185

430

370

490

26.6

240

490

425

570

34.9

300

540

470

650

43.8

400

590

520

700

57.3