RUNNING A NEW OUTLET AL TO CU

[Fireyrguns]

Hi all,
Right now I am running my charger off a split 30 amp dryer outlet. I want to do a dedicated outlet. I was looking around in my panel that is on the opposite side of my house in the basement. So yes this will be a long run. I had an electrician install a 50 amp breaker and run wire to my kitchen a few months back for a new stove. When he had the panel off I had a look in there and seen there is a 50 amp breaker not hooked to anything. So yesterday I took off the cover to have a good look and there is a 6awg al wire in the box unhooked. I traced it and it is in my attic unhooked. My question is can I take out that 50 amp and put a 40 amp in its place reconnect the wire in the panel. Then run that wire in the attic over to the garage to a knife switched disconnect that is good for al and cu then run copper to an outlet to plug my charger into? The al wire would be rated for 50 amps but I want to be safe and use 40 amp and charge at 32 amps 80 % rule. The Al run would be about 30ft over to the garage if that matters. Or should I shorten the Al wire to where it comes into the attic and then run the Cu the rest of the run? Only reason is the path this wire is run from the basement to the attic was installed when the house was built and I don't think I can run new Cu wire that route.

Thanks

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[The Weatherman]

We have a couple electricians on here and I’m sure they will advise shortly. @chl , @Maquis

 

[shelnian]

When connecting electrical conductors, particularly when dealing with different metal types like copper and aluminum, you must use specialized terminals or splicing connectors explicitly designed to handle dissimilar metals, ensuring proper installation and preventing damage due to their different characteristics; mixing dissimilar metals directly within a terminal without a designated device for such use is prohibited, unless the connector is clearly marked as suitable for that purpose; all materials like solder, flux, etc., used in the connection must be appropriate for the application and not negatively impact the conductors or equipment.

 

[Jseis]

The above replies are good advice. Talk with an electrician. Also, there’s make-do w/existing wiring versus future-proofing with what you really will need. Many older homes in our area had 4/5 screw fused 40-50 amp sub panels w/post & tube wiring. That wiring served lights, then wall outlets, then electric fridge, electric oven, then a well pump, then, washer dryer. Crazy dangerous daisy chained systems.

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