Directional wires/cables


Is there any reason to support the idea that cables, interconnects or any other kind of wiring can be considered directional? It seems that the theory is that carrying current will alter the molecular structure of the wire. I can't find anything that supports this other than in the case of extreme temperature variation. Cryo seems to be a common treatment for wire nowadays. Extreme heat would do something as well, just nothing favorable. No idea if cryo treatment works but who knows. Back to the question, can using the wires in one direction or another actually affect it's performance? Thanks for any thoughts. I do abide by the arrows when I have them. I "mostly" follow directions but I have pondered over this one every time I hook up  a pair.

billpete
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Or think of a long train (our record in Australia is 4.5 miles long with 682 cars and 8 locomotives), The couplers between the cars are designed to have a small amount of slack so overall the train stretches when pulled and compresses when braked.  Imagine the train is stopped.  Apply power to the lead locomotive, and the coupling to the next car will stretch a bit before that car starts to move.  The process ripples down the length of the train.  After a short while, the signal that the train is moving arrives at the last car (a mile or more from the loco) though overall not one of the cars has moved more than a few yards.

                                              and:

  Richard Feynman has stated that every electron affects every other electron in our universe.

         How many times the Dunning-Kruger exemplar above has mentioned Richard Feynman and/or QED, without the first clue as to the workings of his/its basic theory, would be hilarious, were it no so pathetic.

                      Another blunder, from the land down under?

                                          Happy listening

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@jea48 

 I was in charge of wiring the power to feed MRI Rooms, Cat Scan rooms, Countless numbers of X-Ray Rooms.

I believe that is more in lines with roughing in the electrical to the rooms, but more in line with this thread, I am curious if were able to see the power cords connecting those machines; any directionality on them? 

I don't know if you are aware, but Shunyata claims to have some of its power cables in some hospitals as the filters and shielding reduce noise on the heart monitors and enable the doctors to better read the data from them. Not sure if any have made their way to MRI's etc.