What materials are typically used for grounding electrode systems?

The appropriate materials for grounding electrode systems primarily include copper and aluminum due to their excellent electrical conductivity and resistance to corrosion. Copper is often used for its superior conductivity and longevity in outdoor settings, making it a common choice for grounding rods and wires. Aluminum, while having slightly lower conductivity than copper, is lightweight and resistant to corrosion, which makes it suitable for many grounding applications as well.

Using wood, plastic, steel, or rubber is not practical for grounding electrode systems. Wood and plastic are insulators and do not facilitate electrical grounding effectively. Steel, while conductive, is prone to corrosion if not properly treated, and rubber is also an insulator that cannot serve grounding purposes. Glass and ceramic are similarly unsuitable because they do not conduct electricity. Thus, options involving copper and aluminum are the standard and most reliable choice for creating effective grounding systems.