When can aluminum cable be used in lightning protection systems?

In lightning protection systems, aluminum conductors are generally not recommended for use due to their susceptibility to corrosion, particularly in environments with high moisture or salinity. They lack the conductivity and mechanical properties necessary for reliable performance in such critical applications.

The use of copper conductors is preferred because they provide superior conductivity, durability, and resistance to environmental factors that can degrade materials over time. Therefore, saying that aluminum cable can be used at all, in any application or installation type, is misleading, leading to the conclusion that none of the proposed choices accurately describes acceptable scenarios for using aluminum cable in lightning protection systems.

This highlights the importance of selecting the right materials for lightning protection, as the efficacy of these systems relies heavily on the quality and characteristics of the conductors used.