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Thread: Wire gauge for PSU

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    Wire gauge for PSU

    Any UK crimpers out there?

    If so, what sort of wire do you use for 12V ATX, and where do you get it at a reasonable price?

    Most of the advice on the web says 18AWG, which is the American system. There is no exact metric equivalent - it seems to fall between 32/0.2 and 24/0.2 strand.

    24/0.2 at Maplin looks a bit thin to me, but 32/0.2 seems about right. I'm thinking of buying a supply of 32/0.2 automotive wire on Ebay. The core diameter is 1mm which should be about right.

    Has anybody used automotive cable? Any problems?

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    Senior Member Giraffe's Avatar
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    Re: Wire gauge for PSU

    There's a calculator here:

    http://www.66pacific.com/calculators/wire_calc.aspx

    for AWG to metric or Imperial. It gives the result as diameter.

    Converter here:

    http://www.sengpielaudio.com/calcula...ss-section.htm

    and a comparison chart of lots of things here:

    http://www.dave-cushman.net/elect/wiregauge.html

    You need wire that's flexible enough (so mains cable cores are too rigid) and robust enough - perhaps a bit of stripped-out mains flex would do.

    As 18 AWG is 0.8171 mm^2, 1 mm^2 mains flex core would be the nearest.
    Last edited by Giraffe; 16-07-2011 at 01:02 PM. Reason: update
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    Re: Wire gauge for PSU

    I purchased 24/0.2 & 32/0.2 from Maplin.
    I used the 32 for the ATX cables & 24 for the fans etc.

    I produced a full set of cable extensions.



    I also braided the full set


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    DWhitley (16-07-2011),Tattysnuc (17-07-2011)

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    Re: Wire gauge for PSU

    That looks lovely Very nice job.
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    Re: Wire gauge for PSU

    Thanks Tattysnuc

    You can see what I have been doing with my cable extensions in my build log

    http://forums.hexus.net/chassis-syst...ded-build.html

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    Re: Wire gauge for PSU

    Subbed!!! Will read through when I've finished remodelling my server...
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