Underpowered kettle cord or something else?

  • So I noticed a strong electrical heat smell from my 3 day old build.

    For context: thermals + airflow in check. No dust (fresh build). So i take a fat whiff from every orific and get no smell only after unplugging everything I find that the kettle cord (which was matt) now has a glossy deformed look with a waxy/sticky feel to it.

    Looking closer I saw that the head of the cord reads 10A 125V while the psu port reads 10A 250v. So am I on to something here or am I a fool?. Do those numbers read power and the cord is just underpowered?