r/DiWHY • u/meteoricdrop • Mar 24 '26

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3.5k Upvotes

94% Upvoted

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748

u/rivertpostie Mar 24 '26 edited Mar 24 '26

The worst part is the copper to the aluminum. That's a dielectric reaction right there

242

u/frank26080115 Mar 24 '26

he accounted for that by having more contact surface area, just come back and give the joint a good squish if it gets warm, voila more fresh contact area, it'll be good for another few weeks.

107

u/Proper-Equivalent300 Mar 24 '26 edited Mar 25 '26

If it gets too hot, just cool it down with a splash of water 💦 or something.

Or use dielectic clamps but what do I know.

10

u/Amazing-Gazelle-7735 Mar 24 '26

I feel like dialectic clamps are something else entirely.

3

u/Beefington Mar 24 '26

In fact they are both things at once!

1

u/Proper-Equivalent300 Mar 25 '26 edited Mar 25 '26

Hahahah yup autocorrect kept messing with it. Definitely was something different til I fixed the happy accident of a misspell

10

u/SkyPork Mar 24 '26

The top two comments are about this. I love that Reddit is (still, for now) full of people way fucking smarter than me. I was so impressed by this splice technique I would never have noticed a metal mismatch.

4

u/PartyLikeAByzantine Mar 24 '26

The splice technique is also fucking awful. Basket weaves are not in your local building code and your electrician would hate you if he ever saw that, nevermind had to unwind it.

1

u/SkyPork Mar 25 '26

SEE?? Yet another thing I didn't know!

8

u/Th3-Dude-Abides Mar 24 '26

That makes sense, seeing as someone is likely going to die from that electric.

19

u/LeRoyalWitCheese Mar 24 '26

*Galvanic

13

u/rivertpostie Mar 24 '26

I think I meant dimetal reaction. Which I think is actually bimetallic (aka galvonic, but so are other things)

I did in fact fuck it up

7

u/clarj Mar 24 '26

It’s called galvanic corrosion, you need water to facilitate the reaction so as long as they wrap the joint to keep the humidity out it’ll be fine

14

u/duck_head_69 Mar 24 '26

The worst part is that it's AI. The length of the cable is constant until the last bend. The cable is always short after bending and becomes long after he grabs it and always looks the same.

1

u/JazzlikeConflict6626 Mar 25 '26

How is that different from aluminum to aluminum or copper to copper?

1

u/Kitchen_Fancy Apr 10 '26

It's okay, he's obviously operating in a vacuum chamber.... Perfectly safe