Braided copper has been proven to the most effective way to repel RFI(radio frequency interference). Foil shielding is the most effective way to shield against EMI(electro- magnetic interference).
This is done for shielding purposes only, a design where we do not solder the shield on the signal's destination. This ensures that any noise picked up by the shield will not be transmitted into your signal path.
Yes, you want to use a UL(Underwriters Laboratory) approved cable. Monster Cable manufactures a full line of UL approved cables you can examine under the "Custom Install" category of the FAQ section.
16 gauge would be the largest cable recommended with the Monster Home Theater Speaker Connection Kit. Examples are XP and XP-CI for in wall aplication.
