Homemade jib crane for my lathe and mill...

[Erie Fred]

@Erie Fred , I believe there was/is a big problem with aluminium mains wiring in USA homes due to expansion/contraction/corrosion and material creep at screw-terminal connections.

Yes, we still use arooneeum wiring for the entrance cable to the main panel (the 200 amp feed), the problem was with wiring to individual sockets around the home.
What has been improved since the home wiring problem that I heard from some people in the business:
1. dual usage connectors (al/cu) IIRC there is a different plating on the hardware now.
2. usage of a paste on aluminum connections, IIRC it has some form of abrasive in it to crunch in when tightened, breaking the oxide layer.