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44 09-Oct-2016, 03:43 PM (This post was last modified: 09-Oct-2016, 03:51 PM by KonradS.) While a fuse won't do any harm, ATX PSUs have overcurrent protection - specifically any single rail can't output more than 240w (according to ATX specs), that is 20a on 12v. This is the reason why more powerful gaming units have to have more separate 12v rails available.
EDIT: afterthought: it actually may be a good idea to use a fuse IF your PSU has more rails AND you soldered them together into one line, because overcurrent protection will kick in only after reaching 40 or 60 amps, depending on number of 12v rails available.
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8 I made one of these a few years ago and I still use it, not as fancy as your's though.
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0 On the 400W one, what is the switch for? i notice it's got the mains switch at the back.
Is it hooked up though the green and grey wire to power it up somehow?
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14 I have one too that I got from BG. It's very nice for a handy bench power supply. The power on shunt it's already done in the board.
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