LAN and Telecom Cabling Long Cat5e runs

Bookmark this page:  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
Long Cat5e runs winternals2006 02-13-06
---> Re: Long Cat5e runs Robert Redelmei...02-13-06
Posted by DLR on February 14, 2006, 5:36 am
Please log in for more thread options


none wrote:
>> winternals2006@yahoo.com wrote in part:
>>> Thought about wireless, but very thick tree coverage; no
>>> LOS. Cable will be buried about 1 ft deep. Would standard
>>> emt conduit shield it from induced charge?
>> No. The problem is not induction. The different building
>> ground-stakes will be driven to different potentials during
>> a nearby strike. Then the Cat5 becomes a ground-path.
>
> This really isn't a problem. Ethernet is transformer coupled and as long as
> you use proper grounding (both the house and ethernet service entrance)
> it'll be OK (a direct hit will almost always fry something, and the
> electrostatic discharge from a near miss.will probably fry something
> (although it might not be obvious why your computer keeps randomly
> crashing)).
>
> If this was a problem, then we wouldn't have telephone/DSL or cable TV
> service (or satellite dishes), etc.

As long as they are all tied to the same ground potential for the house
there is a very very very much reduced potential voltage differential
spike. But when you tie multiple houses together with multiple service
entrances, it gets much harder.

Similar ThreadsPosted
Long Cat5e runs February 13, 2006, 8:42 am
ballasts & long conduit runs April 14, 2007, 11:35 pm
How best to terminate GigE/phone runs in wiring closet? June 27, 2007, 11:02 pm
How long can a cable be February 21, 2005, 7:31 am
Pulling A Draw String through a long conduit? May 1, 2005, 5:12 pm
Long patch cables vs. patch panel August 18, 2004, 9:21 pm
Sell Cat5e FTP Patch Panels,Cat 5e FTP Patch Panels,Cat5e Shieldes Patch Panels March 15, 2006, 8:23 am
Extending cat5e - Help! August 6, 2005, 4:20 pm
CAT5e Jacks February 3, 2006, 8:44 am
telephone connection with cat5e July 13, 2005, 10:40 am
Multiple T1 transmissions on Cat5E August 7, 2005, 7:36 pm
CAT5E and Romex (Electrical) February 17, 2006, 11:31 am
toolless cat5e jacks April 8, 2006, 1:50 am
Use CMR or CMX rated cat5e cable February 12, 2007, 7:56 pm
Straight-through CAT5E cabling April 22, 2008, 6:07 pm