Which of these power cords ?

Gee, if I would have explicitly stated something like "all the transformers, save for the last one your house sees" all the above wouldn't have been necessary. 

Going overboard, to great lengths, to tear apart a summation done in shorthand, that anyone could understand as a simple rebuttal to a specious argument, gives one pause.

Slow day?

All the best,
Nonoise

The power that is spec'd and rated for your home is done at the outlet, not the transformer down the street, or the all the way back to the dam spinning the giant turbines, or the coal plant belching crap into the sky.

All of this nonsense about all the miles, nodes, transformers and such are just another B.S. line of thought (if you can call it thought) that naysayer latch onto as a form or "gotcha" ridicule that works on those easily swayed by such tactics.

As others have said, it's the first few feet your amp (or source) sees which relies on that outlet meeting said specs and ratings as the amp was designed to work with them, and not a different set of specs anywhere back on the line.

All the best,
Nonoise