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submitted 7 months ago* (last edited 7 months ago) by Blackout@kbin.run to c/mildlyinfuriating@lemmy.world

I dont know why they have to lie about it. At $5/8ft board you'd think I paid for the full 1.5. Edit: I mixed up nominal with actual.

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[-] Carighan@lemmy.world 169 points 7 months ago

Shouldn't the normal size be 2? Given, well, the name?

[-] Magnetar@feddit.de 45 points 7 months ago

As if american measurements have ever made sense. Look up how they measure screws or wires and despair.

[-] afraid_of_zombies@lemmy.world 0 points 7 months ago

The European wire gauge system makes no sense. There I said it. I don't need to know the O.D. of the wire, I need to know the amp rating. The O.D. only becomes an issue for bending radius and there is a chart for that as well. Nothing is stopping some a**hole from making a wire almost completely out of plastic that has the O.D. of a typical 14AWG but can't carry any serious amount of current under the European system. Under the AWG you always know what the current capacity is.

And while we are at it, you might as well standardize your wire sizes based on copper. You are never going to use anything except copper. So your units should reflect the material. I am building a chemical skid, that has nothing to do with the distance between the equator to the north pole.

Also when is the last time you were running wires that you needed a mm of precision? Meanwhile a fraction of an amp really does matter. So should not the thing that does matter be reflected in the product?

[-] t0bd1@lemmy.world 2 points 7 months ago* (last edited 7 months ago)

European wire gauge is not the outer diameter. It is the cross section of the conductor inside the wire in mm^2. It is the same system AWG uses (they are directly correlated) with the added benefit that the numbers make sense (10mm^2/AWG8 wire has 4x the cross section of 2.5mm^2/AWG14 wire, so a quarter of the resistance of the thicker wire and thus roughly double the current capacity).

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this post was submitted on 07 May 2024
713 points (95.2% liked)

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