I have a project which requires a high current output (potentially 60A). Rather than get a lab bench supply, I got hold of a Corsair ATX AX1200i that can supply a max of 100.4A on the 12V wire.
I've followed an instructables guide on getting an ATX to run without being attached to a motherboard (soldered the green wire to a ground) and got a 12V wire from the 24 pin connector, as well as a ground wire.
However, when I connect the supply to my circuit (mainly a Peltier configuration), the peltiers barely cool. What's more is that the current seems to be throttling to 0.1A.
What am I doing wrong/ am I using the wrong connector (+12V wire on the 24pin connector as opposed to any others).