Got my Power Wire burnt, is my PSU ok?

[tasnim_tamim]

I have a 600W PSU powering a Ryzen 3 and no discreet GPU. Tonight I installed a case fan on it and tried powering it. Now the sockets on my house isn't particularly great, very loose. I usually power my PC with those multiplugs. Tried to test everything by directly powering it using socket. It won't boot up, so I suspected it was loose. So after 2 min of fiddling around with wires I got the PC to boot up, but now I heard a loud spark noise and then my PC or wire idk starts to smoke up with real bad smell. My mind went blank and I quickly turned off the PSU power switch, saw that wasn't doing anything as my PC and Fan was still on I quickly turned off the socket switch and then it turned off.

Checked to see that my PSU Power Wire been burned and there's a melt wire there that goes to the PSU. Now I am scared if my PSU is dead or my power wire. Please help me out here.

 

 Power wire, PSU