Corsair HX1200 Power Supply Mining Rig MELTDOWN!!! Burning plugs and wires PCIe riser

My Corsair Power Supply has always had issues from day one. I think the gauge of the SATA cables is too thin. Even with only one PCIe riser the wires still get hot. I've tried different PCI riser and cables. I don't have this issue with other power supplies. If you going to put three SATA connector on a wire then the guard of the wire needs to be sufficient.

https://www.amazon.com/gp/product/B01MZ8A8NW/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B01MZ8A8NW&linkId=4b3dec3218958ee8d8d8fe7c6d09082a