Aluminum wire is commonly used in the cable industry, particularly for overhead power lines. Here’s why:
Lightweight and Cost-Effective: Aluminum wires are significantly lighter than copper wires, making them ideal for long-distance transmission lines. They are also about six times cheaper than copper while maintaining similar electrical conductivity.
Strength-to-Weight Ratio: Aluminum has an excellent strength-to-weight ratio, making it suitable for overhead cables. It can withstand compression stress better than copper, which is crucial for utility poles and transmission towers.
Utility Usage: Utility companies have been using aluminum wires since the early 20th century. Approximately 13% of the aluminum produced globally is utilized in the energy sector.
Variations Available: There are different types of aluminum cables suitable for high-voltage transmission lines. Two common types are:
1- Aluminum Bare Transmission Cables: These are designed for primary and secondary power distribution in overhead channels.
2- Aluminum Service Drop Cables: Used for overhead service connections to buildings and homes1.
In summary, aluminum’s low cost, lightweight nature, and excellent conductivity make it a preferred choice for overhead power cables in the cable industry.
