ATX power supply - multiple outputs

[camilozk]

Hi there!

I am using a ATX power supply to feed various devices. (specs attached)

This power supply has originally 5 12V (yellow) cables.

I soldered 5 dc connectors using this 5 yellow cables + 5 GND black cables.


My question is, can I increase the number of dc connectors simply by dividing this yellow cables, as far as I do not demand more than 300W from it, or each of this rails has also a limit?

I hope I explainedmyself... english is not my language...

thanks!

 

[OLIVE2222]

You have a maximum current by output.
For the 5V it's 30A = 150W.
For the regulation it's also better to star connect the outputs from the supply PCB (as done for the existing wiring)

 

[shumifan50]

You need to look at the specifications of the power supply (it is normally pasted on somewhere) to see what the maximum current allowed for the 12V is. If the power supply is rated at 300watt then the 12V will be significantly lower than the 25 amps that you expect.

 

[davenn]

You have a maximum current by output.
For the 5V it's 30A = 150W.
For the regulation it's also better to star connect the outputs from the supply PCB (as done for the existing wiring)

He's talking about the 12V rail , not the 5V rail

Camilozk,
had you looked at the label in your pic, you would have seen that the TOTAL power available is 300W, That's from ALL the power rails combined outputs

it specifically states ...
12V @ 10A = 120W max for the 12V rail

cheers
Dave