Long Cat5e runs
Bookmark this page:
 Yahoo!
 Google
 Windows Live
 del.icio.us
 digg
 Netscape
|
|
||||||||||||||||||||||||||||
|
Posted by on February 13, 2006, 12:01 pm
Please log in for more thread options 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? | ||||||||||||||||||||||||||||
|
Posted by Robert Redelmeier on February 13, 2006, 7:12 pm
Please log in for more thread options winternals2006@yahoo.com wrote in part: 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. -- Robert | ||||||||||||||||||||||||||||
|
Posted by none on February 13, 2006, 9:31 pm
Please log in for more thread options
> 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. ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- | ||||||||||||||||||||||||||||
|
Posted by Robert Redelmeier on February 13, 2006, 10:08 pm
Please log in for more thread options
>> 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 With something like 500V isolation and perhaps 1500V breakdown. Almost nothing during a lightening strike when ground gradients are kV/m > and as long as you use proper grounding (both the house
> and ethernet service entrance) it'll be OK Correct, if you can find Cat5 ethernet protectors and put the service entrance close to the groundstake. Unfortunately, many people think they can run wire without these precautions. -- Robert | ||||||||||||||||||||||||||||
|
Posted by DLR on February 14, 2006, 5:34 am
Please log in for more thread options
Robert Redelmeier wrote: >>> 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
>
> With something like 500V isolation and perhaps 1500V breakdown. > Almost nothing during a lightening strike when ground gradients > are kV/m > >> and as long as you use proper grounding (both the house
>> and ethernet service entrance) it'll be OK >
> Correct, if you can find Cat5 ethernet protectors and put the > service entrance close to the groundstake. Unfortunately, > many people think they can run wire without these precautions. And what most folks don't know is that the MOVs wear out over time. And even with these you can still get differential voltages as you have two paths into each house. One from the power, one from the Ethernet. | ||||||||||||||||||||||||||||
| Similar Threads | Posted |
| 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 |
> LOS. Cable will be buried about 1 ft deep. Would standard
> emt conduit shield it from induced charge?