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Drop Wires No. 1, 2, 6 & 8 to CW 1166, CW 208, CW 1247 & CW 1320A |
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| Applications |
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The drop wires are designed for extending an open wire line or distribution pairs from a pole or cable terminal to a building. The drop wires are to be installed between distribution point and telephone subscriber premises. |
| Standards |
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| • CW 1166 (Drop Wires No. 1) |
| • CW 208 (Drop Wires No. 2) |
| • CW 1247 (Drop Wires No. 6) |
| • CW 1320A (Drop Wires No. 8) |
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| Construction |
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Conductors: |
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| Solid cadmium copper of 0.91mm to BS 4807 (Drop Wires No. 1) |
| Solid copper covered steel of 0.71mm to BS 4807 (Drop Wires No. 2) |
| Solid copper covered steel of 0.81mm to BS 4807 (Drop Wires No. 6) |
| Solid cadmium copper of 1.14mm to BS 4807 (Drop Wires No. 8) |
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Insulation: |
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| PVC to BS 6746 T1 (Drop Wires No. 1) |
| PVC to BS 6746 T2 (Drop Wires No. 2) |
| PVC to BS 7878 T1 (Drop Wires No. 6) |
| PVC to BS 6746 T1 (Drop Wires No. 8) |
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Cable Core Assembly: Two conductors are extruded parallel, figure-8 type. |
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| Electrical properties |
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| Nominal Conductor Diameter |
mm |
0.91 |
0.71 |
0.81 |
1.14 |
| BT Drop Wire Reference |
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No. 1 |
No.2 |
No.6 |
No. 8 |
| Conductor Size |
mm2 |
0.65 |
0.4 |
0.52 |
1.02 |
| Minimum Insulation Resistance @500V DC |
MΩ.km |
24 |
24 |
50 |
24 |
| Minimum Insulation Thickness |
mm |
0.75 |
1.02 |
0.8 |
1.52 |
| Nominal Insulated Conductor Diameter |
mm |
2.41 |
2.75 |
2.41 |
4.18 |
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| Mechanical and thermal properties |
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Temperature range during operation (fixed state) : -30°C – +70°C |
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Temperature range during installation (mobile state) : -20°C – +50°C |
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Minimum bending radius : 10 x Overall Diameter |
| Dimensions and weight |
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| Cable Code |
Number of
Cores |
Minimum Insulation
Thickness
mm |
Maximum Cable Dimensions
Diameter X Height
mm |
Nominal Weight
kg/km |
| 0.91mm Conductor, 2.41mm Insulated Wire |
| TP1166-Y-1P091-DW1 |
2 |
0.75 |
2.7x5.6 |
25 |
| 0.71mm Conductor, 2.75mm Insulated Wire |
| TP208-Y-1P071-DW2 |
2 |
1.02 |
2.75x6.0 |
20 |
| 0.81mm Conductor, 2.41mm Insulated Wire |
| TP1247-Y-1P081-DW6 |
2 |
0.8 |
2.5x5.4 |
23 |
| 1.14mm Conductor, 4.18mm Insulated Wire |
| TP1320A-Y-1P114-DW8 |
2 |
1.52 |
4.44x9.4 |
34 |
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