----- Original Message -----
From: "Gary Schafer" <garyschafer@attbi.com>
Cc: <amps@contesting.com>
Sent: Friday, October 04, 2002 10:37 PM
Subject: Re: [Amps] skin effect
you mean that those 4 wires (3 across top--one under) are one
multi-conductor phase? on top of the power poles i see all over?
> Skin effect is just as important at 60 hz as it is at RF. At 60 hz one
skin
> depth is about 1/3 of an inch. It is important in power transmission
systems.
> Multiple conductors spaced apart are used rather than a single large
conductor.
> Actually each separate conductor consist of stranded aluminum wire wound
on a
> steel cable. The strands are for flexibility and the steel cable provides
the
> strength. Multiple runs of these cables are widely separated. That reduces
the
> skin effect.
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