The outer material of a copper-clad steel grounding electrode plays several important roles.
First, it enhances the electrode's corrosion resistance. Compared to plain steel, copper offers superior resistance to corrosion; cladding the steel with copper significantly extends the electrode's service life across various environments, reduces the risk of corrosion-related damage, and ensures the long-term, stable operation of the grounding system. Second, the outer copper layer helps lower grounding resistance. As a metal with excellent electrical conductivity, copper enables the electrode to conduct current more efficiently, allowing fault currents-such as those from lightning strikes-to be dissipated into the earth more rapidly, thereby improving the safety and reliability of the grounding system.
Furthermore, the outer material enhances the electrode's mechanical strength. It can withstand external forces during installation and use without easily deforming or sustaining damage, ensuring the electrode remains in good condition underground and providing a solid foundation for the grounding system. Additionally, the outer copper layer helps prevent chemical reactions between the steel core and substances in the surrounding soil, avoiding the formation of compounds that could impair grounding performance and further ensuring the system's operational stability.
