Size
of conductor mm2

Nominal Thickness
of
insulation
mm

Diameter
under
armour

Nominal aluminium
armour wire
diameter
mm

Nominal Thickness
of
Sheath
mm

Approximate
Overall
Diameter
mm

50

1.0

12.7

0.9

1.5

17.5

70

1.1

14.7

1.25

1.5

20.2

95

1.1

16.6

1.25

1.6

22.3

120

1.2

18.5

1.25

1.6

24.2

150

1.4

20.8

1.6

1.7

27.4

185

1.6

23.2

1.6

1.8

30.0

240

1.7

26.0

1.6

1.8

32.8

300

1.8

28.6

1.6

1.9

35.6

400

2.0

32.4

2.0

2.0

40.4

500

2.2

36.0

2.0

2.1

44.2

630

2.4

40.4

2.0

2.2

48.8