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To: Daffynition

There have got to be easier ways to steal copper.

I guess aluminum isn’t as valuable these days?


22 posted on 05/08/2013 10:27:20 PM PDT by GeronL (http://asspos.blogspot.com)
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To: GeronL

From when I took a power system course as an undergraduate, I recall that really high power cables are mixtures of aluminum and steel strands. The steel for strength, the aluminum for conductivity. They are also hollow or paper filled inside, because of “skin effect” tends to concentrate alternating current on the surface of a conductor. At 60 Hz the skin depth of copper is only about 0.21 inches. For a solid conductor copper cable, as the diameter increases much beyond 0.5”, resistance decreases linearly with diameter, not as the square. The material on the inside of the cable does little to increase conductivity, so why pay for it?


65 posted on 05/09/2013 4:06:11 AM PDT by Lonesome in Massachussets (Doing the same thing and expecting different results is called software engineering.)
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