"Archimedes' Lever" wrote in message
...
On Thu, 21 May 2009 18:18:49 -0400, "Martin Riddle"
wrote:



"PeterD" wrote in message
. ..
On 20 May 2009 11:38:46 -0400, DJ Delorie wrote:


PeterD writes:
AFAIK, both are exactly the same electrically, only the polarity
of
the wires (vis-a-vis color codes) is different. Were you to wire B
to
B or A to A it is straight through. Wire A to B then it is a
cross-over.

Actually, not at all. Swapping green and orange swap whole pairs,
not
swap wires within each pair.

I think the difference is in the number of twists per foot in the
green and orange pairs (orange has more). If the TPF match the blue
or brown pairs, you get more crosstalk, so using the correct pairs
may
result in less crosstalk.

No question we have to do a full analysis of all factors! bg

I'm going to be doing a 200+ ft run in a month or so to the new
garage, and will try both ways and see if one is more reliable than
the other (I've got four cables run, only need one of them...)

Here is a LCOM link that would help on lighting protection.
http://www.l-com.com/productfamily.aspx?id=6385

Cheers

Lighting protection?

Surge devices are not for "Lightning Protection" as a lightning
stroke
would indeed make it all the way into your product if it hit.

Surge protection devices are just that. Protection from surges, and
only then, up to a certain point.

OK show me a lighting arrestor for Cat6(5e).