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dzink 5 hours ago

You just have to not mix and match. If you mix them the two need special bonding at every single connector or they can cause arching and fires.

amluto 2 hours ago | parent | next [-]

If by “special” you mean ordinary low-cost lugs, then sure.

Check it out:

https://lugsdirect.com/WhyAluminumOverCopperFAQ.htm

And you can browse that site for lugs, and they’re mostly rated for aluminum and copper. Copper-only lugs are actually rather unusual.

Sure, you can’t stick copper and aluminum wires into a wire nut, and finding terminations for smaller-gauge aluminum wire can be hard. But for larger wire, it’s really no problem.

quickthrowman an hour ago | parent | prev [-]

Most wiring device terminations and lugs are Al/Cu rated. You’re supposed to use specific fittings for splicing together aluminum and copper wire (specific WAGO lever nuts are UL listed for this purpose along with some others), I assume that’s what you meant.