| Specification |
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to BT CW1407 and BT CW1383 |
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| Inner Conductor |
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Plain annealed bare copper wire of 0.31 mm dia to IEC 28 & IEC 189-1 |
| Inner Conductor dia (min/nom/max) |
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0.305 / 0.31 / 0.315 mm |
| Dielectric |
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Solid PE type 03 to BS 6234. Minimum point thickness 0.75 mm |
| Dielectric dia (min/nom/max) |
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1.85 / 1.95 / 2.05 mm |
| Outer Conductor |
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Two braids of plain annealed tinned copper wire of 0.1 mm dia |
| Outer Conductor dia (min/nom/max) |
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2.75 / 2.85 / 2.95 mm |
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| Sheath |
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PVC type TM1 to BS 7655. Minimum point thickness 0.3 mm |
| Sheath dia (min/nom/max) |
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3.40 / 3.55 / 3.70 mm |
| Lay up |
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The required number of above described individual coaxial pairs are laid up in concentric formation. When necessary, a central filler may be used. The material of the filler shall be PVC type TM1. |
| Rip Cord |
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A non-metallic rip cord shall be laid under the sheath. |
| Outer Sheath |
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PVC type TM1 to BT M235 coloured white. |
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