I apologize for resurrecting this thread, but I would really like to know more about this subject. I would really like to understand any technical disadvantages to using copper-clad aluminum wiring. So far, the only thing I have learned is from Bruce Thomas when he wrote: Are there any other reasons? What about the creep problem (a.k.a. cold creep) that plagued pure aluminum wiring? Has any documented testing been done that addresses this issue? Believe it or not, the reason I'm asking is because I'm working on a project where a commercial aircraft manufacturer wants to use copper-clad aluminum wiring in the aircraft. (It provides a weight reduction when compared to pure copper.) This is making a government organization nervous. This government organization is now inquiring about the safety aspects of using copper-clad aluminum wiring onboard an aircraft. It should be kept in mind that an aircraft can induce moderate levels of vibration in wiring & connectors. Furthermore, condensation of water may form on wiring and connectors.
