Which of the following is an acceptable material for a grounding electrode conductor?

Copper is widely recognized as an acceptable material for a grounding electrode conductor due to its excellent electrical conductivity, corrosion resistance, and flexibility. It provides a reliable path for fault currents to safely dissipate into the ground, which is essential for the safety and effectiveness of electrical systems. The use of copper helps ensure that electrical equipment is properly grounded, reducing the risk of electric shock and equipment damage.

Additionally, grounding systems must withstand environmental factors, and copper’s durability under various conditions makes it a preferred choice among electricians and engineers. Other materials such as steel may not offer the same level of conductivity or corrosion resistance, which could compromise the grounding effectiveness over time. Plastic and rubber, on the other hand, are insulators and do not conduct electricity, making them unsuitable materials for grounding electrode conductors.