They're like that in this apartment we're renting and I keep seeing them elsewhere. I don't get it.

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[–] 7 points 2 years ago

eastern block solution to copper shortages was to wire houses with aluminum instead of copper. this avoided all that bizarre bullshit that brits do, and in principle it's a good idea since aluminum is used for big time power distribution as well. this worked pretty well until it was noticed that under some conditions hot spots can form on connections over time, requiring replacement of connectors. it's still legal to use aluminum wires in some places, but copper is more common now

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