Hello all!

I have a question about the resistors used in a PC power supply. I just wired up an old 250w supply just for the heck of it since the power supply I really want is on backorder. I have a "somewhat" good understanding of electronics, but I'm no electrical tech by any means haha.

After wiring everything up, I initially used a 10ohm 10w resistor on the 5v rail, and I couldn't get a reading above 11.75v on the 12v output. I was able to charge at roughly 15a on an iCharger 406duo, but the sub-12v level had me perplexed. It dropped to 11.3v under a load... So just for giggles, I removed the 10ohm resistor, and replaced it with 2 1ohm-10w resistors (the two wired together parallel with the negative on one end, 5v on the other)

So my question is this, when I have the 2-1ohm resistors wired in, I have a stable 12.3v on the power supply, but the resistors get up to around 350 degrees in a matter of a couple minutes. Is that safe?

I realize that I was probably fine with the 10ohm resistor, and it barely got warm to the touch after 30 minutes but my inquisitive nature is getting the better of me. Thanks for any and all input, I appreciate it!