Cable Construction
| Conductor | Class 2 stranded tinned conductor |
| Insulation | EPR (Ethylene Propylene Rubber) Type GP4 according to BS 7655 |
| Sheath | HDPCP (Heavy Duty Polychloroprene) Type RS2 according to BS 7655 |
Dimensions
| Cable Type | No. of Cores | Nominal Cross Sectional Area mm² | Minimum Thickness of Sheath mm | Minimum Overall Diameter mm | Maximum Overall Diameter mm | Nominal Weight kg/km |
|---|---|---|---|---|---|---|
| B1 | 1 | 2.5 | 2 | 7.2 | 8.9 | 34 |
| B1 | 1 | 10 | 2 | 9.4 | 11.8 | 205 |
| B1 | 1 | 35 | 2 | 12.9 | 16.1 | 495 |
| B2 | 2 | 1 | 2 | 9.9 | 13 | 240 |
| B2 | 2 | 1.5 | 2 | 9.4 | 12.1 | 151 |
| B2 | 2 | 2.5 | 2 | 10.5 | 13.1 | 187 |
| B2 | 2 | 4 | 2 | 13.2 | 16.3 | 267 |
| B2 | 2 | 10 | 2 | 15 | 18.7 | 448 |
| B2 | 2 | 16 | 2 | 16.7 | 20.9 | 630 |
| B2 | 2 | 35 | 2.2 | 22.3 | 27.8 | 1520 |
| B2 | 2 | 70 | 2.4 | 28.8 | 36 | 1904 |
| B2 | 2 | 95 | 2.6 | 33.2 | 41.5 | 2885 |
| B2 | 3 | 10 | 2 | 17.3 | 20.7 | 525 |
| B2 | 3 | 16 | 2 | 19.8 | 23.2 | 770 |
| B2 | 4 | 0.75 | 2 | 10.2 | 12.8 | 173 |
| B2 | 4 | 1.5 | 2 | 10.9 | 13.7 | 220 |
| B2 | 4 | 2.5 | 2 | 11.9 | 14.8 | 264 |
| B2 | 7 | 0.75 | 2 | 11.8 | 14.7 | 240 |
| B2 | 7 | 1.5 | 2 | 12.6 | 15.8 | 305 |
| B2 | 7 | 2.5 | 2 | 13.8 | 17.2 | 390 |
| B2 | 10 | 0.75 | 2 | 14.4 | 18 | 345 |
| B2 | 10 | 1.5 | 2 | 15.6 | 19.4 | 405 |
| B2 | 10 | 2.5 | 2 | 17.1 | 21.3 | 565 |
| B2 | 12 | 0.75 | 2 | 14.8 | 18.5 | 350 |
| B2 | 12 | 1.5 | 2 | 16 | 20 | 465 |
| B2 | 12 | 2.5 | 2 | 17.6 | 22 | 570 |
| B2 | 19 | 0.75 | 2 | 17 | 21.3 | 490 |
| B2 | 19 | 1.5 | 2 | 18.5 | 23.1 | 649 |
| B2 | 19 | 2.5 | 2 | 20.4 | 25.5 | 886 |
| B2 | 27 | 0.75 | 2 | 20.1 | 25.1 | 640 |
| B2 | 27 | 1.5 | 2.2 | 22.2 | 27.8 | 880 |
| B2 | 27 | 2.5 | 2.2 | 24.6 | 30.7 | 1225 |
| B2 | 37 | 0.75 | 2.2 | 22.7 | 28.4 | 850 |
| B2 | 37 | 1.5 | 2.2 | 25.1 | 31.4 | 1190 |
| B2 | 37 | 2.5 | 2.4 | 27.8 | 34.7 | 1190 |
| B2 | 48 | 0.75 | 2.2 | 25.7 | 32.2 | 1650 |
| B2 | 48 | 1.5 | 2.4 | 28.1 | 35.1 | 1590 |
| B2 | 48 | 2.5 | 2.6 | 31.2 | 39 | 1980 |
| B2 | 6 x 2 | 0.75 | 2 | 19.7 | 24.6 | 465 |
| B2 | 6 x 2 | 2.5 | 2 | 23.7 | 29.6 | 570 |
Class 2 Stranded Conductors for Single Core and Multi-Core Cables
| Nominal Cross Sectional Area mm² | Maximum No. Of Wires In Conductor | Maximum Resistance of Conductor At 20ºC | |||||
|---|---|---|---|---|---|---|---|
| Circular | Circular Compacted | Shaped | Annealed Copper Conductor | ||||
| Cu | Al | Cu | Al | Cu | Al | Metal-Coated Wires ohms/km | |
| 0.75 | 7 | - | - | - | - | - | 24.8 |
| 1 | 7 | - | - | - | - | - | 18.2 |
| 1.5 | 7 | - | 6 | - | - | - | 12.2 |
| 2.5 | 7 | - | 6 | - | - | - | 7.56 |
| 4 | 7 | - | 6 | - | - | - | 4.7 |
| 6 | 7 | - | 6 | - | - | - | 3.11 |
| 10 | 7 | 7 | 6 | 6 | - | - | 1.84 |
| 16 | 7 | 7 | 6 | 6 | - | - | 1.16 |
| 35 | 7 | 7 | 6 | 6 | 6 | 6 | 0.529 |
| 70 | 19 | 19 | 12 | 12 | 12 | 12 | 0.27 |
| 95 | 19 | 19 | 15 | 15 | 15 | 15 | 0.195 |
The above table is in accordance with BS EN 60228 (previously BS 6360)
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