Hello,
I decided to run my two S5 miners for a bit again, got them all connected to my evga 1300 (110V), but after running them for a couple days, I came back and when I touched the power cord going from the UPS into the wall, it was cooking hot, the shielding was soft and sticky. So I quickly shut everything off.

What would cause this?
Cheap power cable?
Wall outlet not providing enough power?

I really don't want to try a different cable before I know what caused that to happen, since I work 10-16 hours a day, and don't want to start an electrical fire.
Any help would be greatly appreciated.