During remodeling I have found some copper clad aluminum wire. If I recall correctly is all 12 gauge used for outlets. It is clearly labelled as CU clad aluminum on the jacket of the insulation.
I think this wire dates from the 70s or maybe 1980s. As far as I know there are no problems with these existing circuits.
Is this type of wire considered safe to use? And/or are there any code compliance issues?
I understand that pure aluminum wire had many issues but have the impression that the copper cladding was meant to improve on that or avoid the problems. But it also seems like CU-clad AL is no longer sold / in use (true?) which seems like a concern.
The CU-clad AL wire I have handled is noticeably softer than normal copper wire, and I think the issues with pure AL were due to mechanical connections failing. So this is another concern.
While I have the opportunity to potentially replace this wire I'd like to do so if it is prudent (or necessary).