Wrapping power cords and interconnects with copper foil.

@jea48 

”If you DIY your own shielded power cords only connect the shield to the EGC at the male plug end. Leave the other end of the shield, at the IEC connector, floating.”

That is actually how I have always done it. I have never constructed a cable, including interconnects, where the shield acted as the ground, although I have seen it done with some manufactured interconnects when configured as balanced cables.  My practice has been to always use a separate ground wire (same size as the connector wires) attached at both ends but to attach the shield only at the source end.  That has worked well for me.

@mitch2 

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A good example where a shield is also used as a signal ground is a Coax Cable.

Aluminum foil is hard to terminate, copper is easy. Also, not all shields are created equal - it depends on the mass density, and more is better. Canare Starquad is excellent, Mogami is good too, and easier to terminate. I only use the best Canare I can buy, with RCA’s terminated at the preamp. Do it once, do it right, and forget it.

Do you have any photos of the cables after they were wrapped? Also, which brand of copper foil did you use, and were did you purchase it?  Thank you

why are there so many writings that look technically correct, but only the writers' opinions. I did the wrapping to my turn-table cables. just wrap. it really worked. s/n ratio was actually, really improved!!! I recorded the signal after phono-amp into my computer. the computer software showed noise level differences before and after the wrapping (aluminum foil). period. any doubt? please do it. it is very simple. if you are not a computer expert, just volume up while no music being played. you can hear less noise (backgroud hiss). I am not a big fan who buys expensive cables. just do it, then you can realize you don't have to donate your money to expensive cables makers.