It is important to understand the differences between copper and aluminum XHHW wire and their suitable applications. Copper wiring is considerably heavier than its counterpart, aluminum wire. However, copper is more conductive, making it a more effective and expensive solution. Aluminum, on the other hand, is much lighter than copper. However, with XHHW wire, this comes at a cost, as aluminum is less conductive than copper. While both forms of wiring offer considerable flexibility, it is critical to ensure that the wiring selected is the one most suitable to your installation requirements. Furthermore, in some localities, aluminum wiring may not be approved whereas copper wiring may be. Therefore, it is crucial when selecting the correct cabling to verify that the wiring selected meets any applicable standards or legal codes applicable to your application.