Conductors

Solid annealed tinned copper conductor

Insulation

Material shall be colored and shall comply with requirements of PVC compound type 2 in BS6746

Cable Assembly

Twisted pairs ,cabled into sub-units, cabled in a circular form

Rip cord

Non metallic rip cord which may incorporate manufacturers
identi­fication colours shall be laid under the sheath

Tape wrap

Polyethylene terephthalate tape, wrapped with 25% overlap

Outer Jacket

PVC compound type TMI in BS6746

Nominal Conductor Diameter (mm)

0.5

Maximum Conductor Diameter (mm)

0.51

Minimum Conductor Elongation, %

15

Insulated Conductor diameter (mm)

0.92

Insulation ultimate tensile force minimum (N)

10

DC resistance @20˚C Ohm/km Maximum Average

97.8

Mutual Capacitance nF/km, max Average

100

Pair to pair capacitance unbalance, pF max

500

Insulation Resistance, 500V DC Minimum Mohm.km

50

Pair No

Colour of conductor insulation

A – wire

B – wire

1

White

Blue

2

White

Orange

3

White

Green

4

White

Brown

5

White

Grey

6

Red

Blue

7

Red

Orange

8

Red

            Green

9

Red

Brown

10

Red

Grey

1

Blue

2

Orange

3

Green

4

Brown

5

Grey

6

White

7

Red

8

Black

9

Yellow

10

Violet

1

2

3

4

5

6

7

8

9

10

11

12

13

Pair
Number

1

2

3

4

5

Last

Wire

A

B

A

B

A

B

A

B

A

B

A

B

Cable

5 pairs

Orange

White

Red

Grey

Blue

Brown

Red

Grey

Green

Black