Aluminum cables are generally selected for use in which applications?

Aluminum cables are primarily chosen for high voltage applications due to their favorable properties for such settings. Aluminum has a high strength-to-weight ratio, which makes it a lightweight option compared to copper. This quality is particularly advantageous in high voltage scenarios where cables need to be transported over long distances or suspended without undue weight.

In high voltage transmission, aluminum cables can effectively conduct electricity while minimizing the risk of sagging or mechanical failure due to weight stress. Additionally, aluminum has good conductivity, although it is lower than that of copper, and this can still be sufficient for high voltage lines when configured correctly.

Moreover, the cost-effectiveness of aluminum compared to copper makes it a more viable choice for the extensive infrastructure needed for high voltage applications, ensuring that both operational and installation expenses are kept manageable. The other application types typically favor copper or other materials for reasons related to performance and operational efficiency.