- Telephone Cable with PVC insulation and PVC sheath.
- For use in the Indoor network.
- Tinned-copper conductor
- Insulated conductors uniformly twisted together to form a pair.
- Wrapping is applied over the cable core.
- PVC compound is extruded over the wrapping
Physical Description
Conductors | Solid annealed tinned copper conductor |
Insulation | Material shall be colored and shall comply with requirements of |
Cable Assembly | Twisted pairs ,cabled into sub-units, cabled in a circular form |
Rip cord | Non metallic rip cord which may incorporate manufacturers |
Tape wrap | Polyethylene terephthalate tape, wrapped with 25% overlap |
Outer Jacket | PVC compound type TMI in BS6746 |
Mechanical Parameters of basic conductors
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 |
Electrical Properties
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 |
Colour codes of units
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 |
Colour codes of tape lappings, Unit
1 | Blue |
2 | Orange |
3 | Green |
4 | Brown |
5 | Grey |
6 | White |
7 | Red |
8 | Black |
9 | Yellow |
10 | Violet |
6 Pair Indoor Telephone Cable 0.5mm Ivory For Voice Wiring.
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