Drop Wires No. 1, 2, 6 & 8 to CW 1166, CW 208, CW 1247 & CW1320A

image of Drop Wires No. 1, 2, 6 & 8 to CW 1166, CW 208, CW 1247 & CW1320A of Telephone cable

Application

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

construction of Drop Wires No. 1, 2, 6 & 8 to CW 1166, CW 208, CW 1247 & CW1320A of Telephone cable

• 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

Dimensions And Weight

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