One reason aluminum electrical wire is preferred is that it:

Aluminum electrical wire is often preferred because it is less expensive than copper wiring, which is the most common alternative. The reduced cost of aluminum wire can represent significant savings for large-scale projects or installations, making it an attractive option for contractors and electricians alike.

In addition to its cost-effectiveness, aluminum is also lighter than copper, which can ease the handling and installation of electrical lines, particularly in overhead applications. However, while aluminum's lighter weight and flexibility can be beneficial, the primary reason for choosing aluminum in many situations is its lower material cost, especially for lengthy runs of wire where copper prices can become prohibitively high.

Reducing current is not a benefit associated with aluminum wiring; in fact, current capacity can be an important consideration, as aluminum requires larger diameter conductors than copper to carry the same load due to its lower conductivity. Thus, when weighing the considerations for aluminum electrical wire, its cost advantage stands out as a significant reason for its preference in various applications.