Golden Rules for Cable & Power Cord Arrangement

I cross power cables with interconnects at 90 degrees, plus lift them over each other with small tripods made of wooden dowels cut to 6 inch lengths kept together with rubber bands. Only need 3 tripods.
Others say they all should be elevated off carpeting, but I have mine on the carpet and can't hear any difference.

It depends, you must listen and see if you hear any difference.
In my system almost all cables and cords are very well shielded, and I hear no difference whatever the arrangement. Still, I prefer when they don't touch easch other, just in case.

Great comments! Thank you.

All of the above plus something easy to use to separate cables is the tubed foam pipe wrap that often comes in 3 or 4-foot lengths and maybe in a bag of 8 pieces for a couple of bucks. Get the material that is about 2 inches in outside diameter and has about a one-inch diameter inner hole. These tubes are already split in half but need to be pulled apart.

You can cut pieces as short as a couple of inches and wrap around your cables at crossing points so they do not touch. These tubes also work pretty good at providing separation between dual-run bi-wire speaker cables. I am sure the material itself is not the greatest dielectric but because it is foam it is mostly air.

All of the above plus something easy to use to separate cables is the tubed foam pipe wrap that often comes in 3 or 4-foot lengths and maybe in a bag of 8 pieces for a couple of bucks. Depending on the diameter of your cables, commonly available inside diameters range from about 1/2 to 1-inch. The outside diameter is typically about two inches. These tubes are already split in half but need to be pulled apart.

You can cut pieces as short as a couple of inches and wrap around your cables at crossing points so they do not touch. These tubes also work pretty good at providing separation between dual-run bi-wire speaker cables. I am sure the material itself is not the greatest dielectric but because it is foam it is mostly air.