Drop Wires No. 1, 2, 6 & 8 to CW 1166, CW 208, CW 1247 & CW 1320A
Applications
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
- CW 1166 (Drop Wires No. 1)
- CW 208 (Drop Wires No. 2)
- CW 1247 (Drop Wires No. 6)
- CW 1320A (Drop Wires No. 8)
Construction
 |
 |
| Conductors |
| 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) |
| Insulation |
| 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) |
| Cable Core Assembly: Two conductors are extruded parallel, figure-8 type. |
Electrical properties
| Nominal Conductor Diameter | mm | 0.91 | 0.71 | 0.81 | 1.14 |
| BT Drop Wire Reference | 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 |
Mechanical and thermal properties
Temperature range during operation (fixed state) : -30°C – +70°C
Temperature range during installation (mobile state) : -20°C – +50°C
Minimum bending radius : 10 x Overall Diameter (unarmoured cables)
Dimensions and weight
| Cable Code | Number of Cores | Minimum Insulation Thickness | Maximum Cable Dimensions Diameter X Height | Nominal Weight |
|---|---|---|---|---|
| mm | mm | 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 |
