What is a common misconception about aluminum wire?

The assertion that aluminum wire is more conductive than copper wire is a common misconception. In actuality, copper wire has a higher conductivity than aluminum wire, meaning that for the same cross-sectional area, copper can carry more electrical current than aluminum. This is an important consideration in utility arborist practices, as the understanding of material properties influences decisions about wire selection for safety, efficiency, and performance.

Aluminum wire does have advantages, such as being lighter and generally less expensive than copper, but when it comes to conductivity, copper consistently outperforms aluminum. This is why, despite its lower cost and weight, aluminum is often used in larger diameters to achieve adequate conductivity for electrical applications. Understanding the properties of each material is crucial for making informed choices in utility wiring.