[R-390] Copper clad/copperweld ant. wire

[Charles A Taylor]

----- Original Message ----- 
From: "David C. Hallam" <dhallam at rapidsys.com>
To: "Dan Merz" <mdmerz at verizon.net>; <r-390 at mailman.qth.net>
Sent: Sunday, November 19, 2006 3:19 PM
Subject: RE: [R-390] Copper clad/copperweld ant. wire


> If you are looking for corrosion resistance as well as strength, use
> aluminum clad steel wire.  It is used for the strength member in 
> ACSR power
> transmission cable.
>
> David
> KC2JD
>
David,

ACSR=aluminum cable, steel reinforced. Consists of central strands of 
steel wire, surrounded by aluminum strands. Very conductive and very 
cost effective over copper conductor. It's cost effective to string 
large cables for future growth; so much so that the power transfer is 
now limited by the inductance of the cable, rather than the 
resistance.

Which leads to the strange situation that power at the far end of a 
lightly-loaded line can rise higher than the source due to capacitance 
of the conductor to ground and surrounding conductors.

Thought I'd throw that in.

Charles

Charles A Taylor, WD4INP
   Grifton, North Carolina