Which materials can be used for grounding conductors in electrical systems?

The selection of copper and aluminum as grounding conductors in electrical systems is based on their conductive properties and resilience. Both materials exhibit excellent electrical conductivity, which is crucial for effectively dissipating fault currents and ensuring safety in electrical installations.

Copper is widely preferred for grounding due to its superior conductivity and resistance to corrosion, which allows for a long-lasting and efficient grounding system. Aluminum, while slightly less conductive than copper, is still a viable option, particularly in larger grounding systems or where weight is a critical factor. It is also more cost-effective, making it an economical choice for many applications.

Using either copper or aluminum satisfies the requirements for grounding conductors outlined in various electrical codes and regulations, ensuring both safety and performance in electrical systems. The inclusion of both materials reflects the industry's acknowledgment of balancing performance and economic considerations.