Anti-oxidation materials are applied to which conductors prior to installation?

Anti-oxidation materials are primarily applied to aluminum conductors before installation. This practice is essential because aluminum tends to oxidize when exposed to oxygen in the environment. The oxidation process creates a layer of aluminum oxide on the surface of the conductor, which is much less conductive than aluminum itself. By applying anti-oxidation materials, the electrical connections can maintain better conductivity and reduce the potential for overheating, which can lead to system failures or hazards.

While copper conductors do not require anti-oxidation materials in the same way, they can still benefit from other types of protective coatings or treatments, but the oxidation issue is not as pronounced as it is with aluminum. Additionally, steel conductors, often used in different applications such as grounding or structural components, generally do not undergo the same oxidation challenges as aluminum and therefore do not have the same need for anti-oxidation treatment.

In summary, aluminum conductors specifically require anti-oxidation materials due to their higher susceptibility to oxidation, which can significantly affect electrical performance.