Solid round copper-bonded steel earthing conductor, diameter 10 mm, cross-section 78.5 mm², with a copper layer of not less than 100 µm bonded to a low-carbon steel core. The 100 µm copper layer suits power system earthing, bonding and conductors in concrete.
10 mm Diameter | 78.5 mm² Cross-section | 100 µm Copper layer | 0.620 kg/m Mass |
Why this conductor
- Right grade for power earthing. Copper layer of not less than 100 µm, above the 70 µm of IEC 60364-5-54 for copper coated steel earth conductors.
- Steel strength, copper surface. The steel core holds its line in trenches and risers; the bonded copper does not separate on bending.
- Section shown. 78.5 mm² with a 1 s current of about 6.4 kA on the steel core basis.
- Easy to handle. 0.620 kg/m, about 62 kg per 100 m coil.
- Theft deterrent. Low scrap value compared with solid copper.
For buried LPS earth termination use 250 µm
Where IEC 62561-2 or IS/IEC 62305-3 Table 7 applies to an earth conductor in soil, specify the 250 µm version of the same size. Make buried joints by exothermic weld and seal cut ends.
Specifications
| Electrical Parameters |
| Material | Copper-bonded steel |
| Material Grade | Low-carbon steel core, bonded electrolytic copper 99.9 % |
| Copper Layer | Not less than 100 µm |
| DC Resistance at 20 °C | About 1.38 ohm/km |
| Electrical Conductivity | About 16 % IACS |
| Short-Circuit Current (1 s, steel core basis) | About 6.4 kA, k = 82, 500 °C final |
| Mechanical Parameters |
| Conductor Type | Round, solid |
| Diameter | 10 mm |
| Cross-Section | 78.5 mm² |
| Mass per Metre | 0.620 kg/m |
| Bend | 90 degrees over 5 x diameter, no cracks or peeling |
| Tensile Strength | Steel core value on the mill test certificate of each coil |
| Standards and Certification |
| Applicable Standard | IEC 60364-5-54 (copper layer at least 70 µm) |
| Indian Standard | IS 3043:2018 |
| Minimum Cross-Section Check | IS/IEC 62305-3 Table 7: 50 mm² met; buried LPS earth termination needs the 250 µm grade |
| Building Code | National Building Code of India, NBCS 2026, Part 8 Section 2 |
| Safety Regulation | CEA (Measures relating to Safety and Electric Supply) Regulations 2023 |
| Quality System | ISO 9001:2015 certified; CE marked; RoHS compliant |
| Finish and Supply |
| Surface | Bright copper, metre marks every 1 m; lot tag |
| Supply Form | Open (cut to length), Coil 100 m or Coil 200 m |
| Unit of Sale | Metre (m) |
| Minimum Web Order | 1000 m |
| Application and Installation |
| Used For | Power system and equipment earthing to IEC 60364-5-54 and IS 3043, equipotential bonding, conductors cast in concrete, risers inside RCC columns and above ground runs; for buried LPS earth termination use the 250 µm version |
| Joints | Exothermic weld in soil; copper-bonded or stainless steel clamps above ground |
| Do Not Use In | Buried LPS earth termination where IEC 62561-2 or IS/IEC 62305-3 Table 7 calls for 250 µm; installation that scrapes the copper layer; unsealed cut ends in soil; direct contact in soil with GI, bare steel or aluminium; acidic or sulphurous soils |
| Product Identification |
| Product Code | LPES-ECN-RD-CB100-10 |
| Product Number | 32-04-03-03-000100-0000-03 |
