I need advice for power cords

Several posts here make the fundamental claim that upgrading house wiring & outlets should be top priority, and that until this has been addressed, any comparison of audio component power cords is an idle exercise. What say the experts about this claim which, if true, would seem to moot many posts above (and those on other cable comparison threads)?

Upgrading the house wiring is the best you can do for your equipment. 1.  separate phase (if you have 3 phase system) 2 separate group, 3 high-end breaker, 4 hospital grade outlet 5 good cable(s). 6 multiple groups of cables with the exact same length for splitting power amp/front end 7 Star wired distribution block. (Isotek, Kemp, Wire World).

It is all about lowering the (contact) resistance and separating your system from noise/household appliances. If you are on a budget you can use multiple runs of standard wiring and combine them because the inductance will get lower every time you double the wire per leg. (e.g. 2 x AWG 13 per leg is better then 1 x AWG 11). You can check your combined AWG here:

https://www.wirebarn.com/Combined-Wire-Gauge-Calculator_ep_42.html

Aim for 10 AWG or less, your power amp will be grateful. 

Lower inductance is, aside from less (contact) resistance, the second most important part of the job. Star Quad or Helix cable geometries can be helpful with multiple runs of wire so you can create a self shielding type of cable. Don't use shielding on analog equipment or your house wiring. Only use shielding with digital equipment that spits out to much junk/hash. 

If you buy fancy cables before you upgrade your house wiring you will always chase the (sub)bass. And if you buy only one fancy cable, put it between your hospital grade outlet and your distribution block. From there the improvements will be more subtle. Some people think the source is more important, other think the power amp is more important.

Budget recommendations:  Anti Cables Level 3, Shunyata Venoms. Vovox Sonorus, Audience Front Row. Just my 2 cents. Or go the DIY route if you know what you are doing. 

Most helpful, 
tantejuut

Sharing this with my electrician. No DIY on this stuff for me. 

I ran 4 separate 20 amp runs with extra heavy wire into two hospital grade 20 amp double outlets. Looking back I wish I would have run three of them.

You might already have it, Any larger than 12  would have moved it to 25 or 30 amp, Still a single run, but man oh man, what are running, LOL
20s are 2400 watt continues right.. so 4 is real close to 10000 watt continues. I run 3 20 in the house sound room, and 4 15, in the shop, both stereo rich environments.  Both can and will exceed 145 db, with a very low THD...Glass is taped in the shop when I'm tinkerin' for sure.
Yup Yup..

Concrete crumblers at you place?

Regards