Construction & selection
Soft-drawn bare copper earthing-conductor family. The illustration shows an untinned stranded copper option. Size, termination method and installation suitability require project-specific selection.
For technical data and a quotation, use Contact in the main navigation and include this cable family in your enquiry.
Construction
Illustrated variant: SDBC untinned bare copper
- Soft-drawn copper strands
Soft-drawn copper strands make up the bare current-carrying conductor.
- Bare stranded conductor assembly
The strands are laid together as a bare conductor, without insulation or an outer sheath.
Construction source: supplier overhead conductor reference catalogue, page 25.
Family reference
| Illustrated conductor | Copper |
|---|---|
| Illustrated configuration | Untinned soft-drawn stranded copper earthing conductor |
| Construction layers | untinned copper strands only |
| Selection requirement | Confirm size, rated voltage, installation conditions and applicable standards before ordering |
Engineering data
Manufacturer catalogue reference: PDF page 25 (printed page 21).
BS 6360 / BS EN 60228 and IEC 60228 (catalogue statement)
| Nominal area (mm²) | Minimum number of wires (No.) | Approx. conductor diameter (mm) | Maximum resistance at 20°C (Ω/km) | Approx. conductor weight (kg/km) |
|---|---|---|---|---|
| 4 | 7 | 2.52 | 4.61 | 34.0 |
| 6 | 7 | 3.08 | 3.08 | 51.0 |
| 10 | 7 | 3.8 | 1.83 | 87.0 |
| 16 | 6 | 4.9 | 1.15 | 136 |
| 25 | 6 | 6.0 | 0.727 | 215 |
| 35 | 6 | 7.1 | 0.524 | 301 |
| 50 | 6 | 8.2 | 0.387 | 410 |
| 70 | 12 | 9.8 | 0.268 | 594 |
| 95 | 15 | 11.7 | 0.193 | 820 |
| 120 | 18 | 13.2 | 0.153 | 1040 |
| 150 | 18 | 14.6 | 0.124 | 1300 |
| 185 | 30 | 16.2 | 0.0991 | 1615 |
| 240 | 34 | 18.7 | 0.0754 | 2100 |
| 300 | 34 | 20.7 | 0.0601 | 2650 |
| 400 | 53 | 23.6 | 0.047 | 3440 |
- Source describes Class 2 circular-stranded/compacted conductors; exact construction is subject to the selected item. Non-compacted untinned or tinned variants are stated as available on request.
- Values are transcribed from the supplied manufacturer catalogue, not independently certified test results. Final construction, applicable standard edition and project suitability require technical review.
Project-specific confirmation
Confirm the required conductor material, core arrangement, voltage designation, installation conditions, size and applicable standards with your enquiry. Reference tables on this page give data for the stated construction; confirm the selected current datasheet before ordering.
Illustrations are not engineering drawings or factory photographs. Final specifications and approved drawings will be confirmed with our official quotation. No certification or current manufacturer availability is implied by this family overview.