Which element is most commonly used for electrical transmission lines and why?

2025-08-11

The most common material used for electrical transmission lines today is aluminum. While copper is a superior conductor, aluminum's lower cost and lighter weight make it the preferred choice for long-distance overhead power line projects. A lighter conductor reduces the stress on supporting towers and allows for longer spans between structures, which significantly lowers overall project costs.

Specifically, we use Aluminum Conductor Steel-Reinforced (ACSR). This innovative design combines the best qualities of both materials: the outer layers of aluminum efficiently conduct the electricity, while a central core of steel provides the high tensile strength needed to support the conductor over long spans and resist mechanical stresses from weather conditions like wind and ice.

Our products at Ningbo Changshi Electric Power Machinery Manufacturing Limited are designed to facilitate the stringing and maintenance of these modern, efficient aluminum and ACSR conductors, ensuring reliable and safe power transmission.

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