Since aluminum expands and contracts so much when current heats the connectors up they would come loose and could cause a fire, or a melted marette
It is advised to re-tighten all aluminum connections every couple of years.
That's kinda what you said hey seaflo?
In this province only copper is used for residential and comm./industrial as far as I have seen.
I have spent years baby-sitting electricians, plumbers and other trades but I surely ain't going to say that I have seen everything
I was working in construction when they were fazing it out here. Some houses have half aluminum and half copper
Then you have to make sure that when you replace switches and outlets to use only those labeled as "for aluminum".
I wonder who the brainiac was who figured to use aluminum?