Copper bond Earth Rods, deep driven, usually provide the most cost-effective earth system. They are made from low carbon, high tensile strength (minimum 600n/mm2) steel core with a coating of 99.9% pure electrolytic copper, that has been molecularly bonded to the steel core.
Material: Pure copper molecularly bonded on to a steel core
Standard: BS:EN 62561-2, BS 7430
Copper Thickness: 254 microns (minimum)
Extendable type rods have a rolled thread (UNC2A) at each end. Rolled threads have a higher strength than cut threads. Additionally, they preserve the copper coating over the threaded sections thus improving corrosion resistance.
An Earth Termination Network must:
- protect life,
- provide a low resistivity path to earth,
- allow circuit protection devices to operate correctly,
- carry high currents repeatedly,
- have excellent corrosion resistance properties, and
- be mechanically robust.