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Step 4Wire The Panel
Wire Colors For The ATX Power Supply
I used a 12 way terminal block to make connecting everything easier.
My terminal block was only rated for 25 amps so I used 2 sections for the 3.3 & 5v lines with the front jacks split between them.
I used 12 AWG wire for the 3.3 & 5v lines and 16 AWG wire for the rest of them.
The indicator led is connected to the -12v line. (Note: the led used here has a resistor built in normally a red led would need a 500-700 ohm resistor to use it with 12v)
The toggle switch is SPST and the pushbutton switch is a NC momentary. They are wired in series; one side goes to ground the other to the green power line.
| Color | Signal |
|---|---|
| Black | Ground |
| Yellow | +12v |
| Red | +5v |
| Orange | +3.3v |
| Blue | -12v |
| White | -5v (Not used as of ATX 1.3) |
| Purple | +5v Standby (Has power even when power supply is turned off) |
| Green | Power On (Short to ground to turn on the power supply) |
| Gray | Power OK (Not used in this project) |
| Brown | 3.3v Sense (Leave connected to 3.3v line) |
I used a 12 way terminal block to make connecting everything easier.
My terminal block was only rated for 25 amps so I used 2 sections for the 3.3 & 5v lines with the front jacks split between them.
I used 12 AWG wire for the 3.3 & 5v lines and 16 AWG wire for the rest of them.
The indicator led is connected to the -12v line. (Note: the led used here has a resistor built in normally a red led would need a 500-700 ohm resistor to use it with 12v)
The toggle switch is SPST and the pushbutton switch is a NC momentary. They are wired in series; one side goes to ground the other to the green power line.
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