Question ATX 8 pin extension cable

Jan 24, 2020
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Are there any specific cable requirements for the cable I need to make to extend the atx/eps cable . AWG is not really known here . I have some 14/0.3mm "auto cable "sold as 14 gauge, some chunkier cable sold as 16 gauge . I also have two ready made cables marked 18awg and 22awg where the 22 looks better than the 18 , but am not sure about these . Decent ready made cables are not available here
 
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Personally I'd use one step heavier gauge (lower AWG number) for the extension than whatever came with it. Just to be safe as length increases resistance. Most PSU are 18 Gauge. I think some junk ones even use 20 gauge. Expensive PSU often use 16 Gauge. I can't see using anything heavier than 16 Gauge. Heavier wire won't hurt anything as long as it fits. I couldn't picture going heavier than 16 gauge. Except in very long runs.

Just make sure you use the correct size molex terminals and your crimps or solders are good and everything plugs into the correct connector. The wrong voltage or worse wrong polarity can kill your computer.
https://www.moddiy.com/pages/Power-Supply-Connectors-and-Pinouts.html
 
Jan 24, 2020
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For flexibility, you probably want stranded rather than solid wire. Wire gauge should be the same as the original power supply.
If wire gauge is not the standard measurement then this chart may help -- https://www.canford.co.uk/TechZone/Article/MetricAWGWireSizeEquivalents
That link was very informative thank you . I have been searching on an older i-phone which will not load these forums . I think the 16 AWG equivalent is required with 19/0.3 stranding which does not seem to be available , only 14/0.3 and 28/0.3 which if it is what I have ( I will have to measure and count the strands) is a bit chunky and a little large for the connectors . Have just found 17/0.3 cable , which has a cross section of 1.5 mm . I have been testing ,without success, the resistance of the various cables . I guess I need a better multimeter .
 

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