[TAG] Wiring a house with ethernet
Jay R. Ashworth
jra at baylink.com
Thu Oct 20 18:36:00 MSD 2005
On Wed, Oct 19, 2005 at 08:22:30PM -0500, John Karns wrote:
> AFAIK, the reason is that the physical design of the plug (by way of the
> crimped connection, I believe) is susceptible to higher signal loss than a
> punched connection on a panel (or a single jack connector). As I write
> this, the question occurs to me whether either type of cable - stranded
> or solid - gives better spec for signal loss vs length, otherwise known as
> attenuation. At any rate, I would guess that solid wire would be
> significantly more economical.
In general, solid wire should be used whenever possible; stranded wire
is only preferred for drop cords and jumpers.
> Another very practical reason to use stranded for patch cable, is that
> it's more flexible. Whereas cables in the wall will not be flexing
> (barring earthquakes, at least), patch cables generally will be subject to
> handling and being moved around. Solid core wire would eventually break,
> yielding connection problems, and would also be vulnerable to crimping
> (not like the tool, but acute angle bends) which cause signal loss at high
Yep; that's why.
>  As Ben mentioned in a reply, high freq signal characteristics are vastly
> different than DC. So although the cable may pass a (DC) continuity
> test, it can fail to perform adequately at high frequencies.
Skin effect is your enemy.
Jay R. Ashworth jra at baylink.com
Designer Baylink RFC 2100
Ashworth & Associates The Things I Think '87 e24
St Petersburg FL USA http://baylink.pitas.com +1 727 647 1274
"NPR has a lot in common with Nascar... we both turn to the left."
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