Do Cables Wear Out?

Technically, he is correct, an example being that automotive spark plug wires in 5,000-30,000 volt circuits should probably be replaced after about 100,000 miles. I wouldn't worry about it in your application for the first 75 years or so however, and I think that is being very conservative. IMO.

V.D.Hul is right. Another issue is that the cables are often emotionally stunted from the rough words they hear from factory workmen while still in their formative stages. The best manufacturers buy cable from a secret plant in Sweden, all workers are virgins, men handle the bass conductors and wimen take care of the rest, the nature of the shop requires that the virgins are ugly (or have another job lined up) but happily this has been found to make the cables sound more real. Birds sing constantly during the manufacturing process, temperature is held at a constant 76 degrees f with 42% relative humidity, and the shop is always lit to resemble the first hour of morning on a great new day.