Copper vs Aluminum Cables: Which Is Better for Electrical Installations?

Copper and aluminum are the most commonly used conductors in electrical cables. Each has distinct advantages depending on the application.

Conductivity

Copper offers better conductivity, requiring smaller diameter cables to carry the same load as aluminum.

Weight and Cost

Aluminum is lighter and more affordable, often used in power distribution lines and utility poles.

Durability

Copper is more durable and less prone to expansion and oxidation, making it ideal for connections and critical circuits.

Safety

Improperly installed aluminum cables may loosen over time, increasing fire risks. Proper lugs and maintenance are essential.

Conclusion

Choose copper for residential and sensitive circuits. Aluminum is a good choice for high-current, large-scale applications with proper installation practices.