How Does a Copper Bonded Earthing Rod Differ from a Pure Copper or GI Rod?

How Does a Copper Bonded Earthing Rod Differ from a Pure Copper or GI Rod?

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Copper bonded earthing rods are designed to provide efficient grounding, more economically than either pure copper or GI rods. The difference lies in their construction and subsequent performance. The copper bonded earthing rod has a low carbon steel core with a layer of copper on the outside bonded molecularly, with copper typically 100 to 250 microns thick. This formation gives the rods mechanical strength plus very good conductivity ability.

Conversely, pure copper rods are simply copper. Copper offers excellent conductivity and corrosion resistance properties but at a very high price. For highly sensitive installations, a pure copper earthing rod is required for maximum performance. GI rods are just steel rods coated with zinc. GI rods are the cheapest ones but have the lowest conductivity and lifespan when heavy corrosive soils are tested.

The copper bonded rod is an intermediate option between corrosion resistance and longevity vs. conductivity and cost and is best suited for most commercial and residential grounding applications.

Hence, Copper Bonded Earthing Rods provide an optimal combination of strength, corrosion resistance, and affordability that has kept them a perennial favorite for reliable and long-lasting grounding of electrical systems.