LAN and Telecom Cabling Cable length

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Subject Author Date
Cable length Derickjcj 07-18-06
---> Re: Cable length Robert Redelmei...07-18-06
  ---> Re: Cable length DecaturTxCowboy07-19-06
    ---> Re: Cable length Dmitri(Cabling-...07-19-06
      `--> Re: Cable length DecaturTxCowboy07-19-06
Posted by Derickjcj on July 18, 2006, 9:43 pm
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what is maximun length of cat 5E or Cat 6 UTP cable can reach 100mbps from
switch to workstation ?

Posted by Robert Redelmeier on July 18, 2006, 11:51 pm
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> what is maximun length of cat 5E or Cat 6 UTP cable can
> reach 100mbps from switch to workstation ?

100m (330ft). But people who ask often mean to
run interbuilding which brings in lightening hazards.

-- Robert


Posted by DecaturTxCowboy on July 19, 2006, 6:42 am
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Robert Redelmeier wrote:
> 100m (330ft). But people who ask often mean to
> run interbuilding which brings in lightening hazards.

On a side note, I still come across military construction bids that
include buried data cables between buildings. Specifications call for
shielded buried cable in a 18" deep trench with a 10 AWG wire running
over the cable to intercept surges, gas or metal-oxide surge protectors,
and ten foot grounding rods.




On another side note, had a contractor do come trenching for me the
other day. The customer knew there were several water lines only eight
inches deep and lots of other stuff we could only guess at the location,
and understood we might hit something.

We did.

Water line right 2" next to my buried telephone line.
They trenched 10" deep over a marked 8" deep water line.
They trenched too close to a septic system and got the septic line and
another water line.

But the coolest thing was a 240 volt power line. The Ditch Witch pulled
that cable up out of the ground throwing blue, purple, and green fire
all over. You could taste it! It was pretty funny - after the initial
shock, pardon the pun.

Posted by Dmitri(Cabling-Design.com on July 19, 2006, 9:45 am
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DecaturTxCowboy wrote:

> But the coolest thing was a 240 volt power line. The Ditch Witch pulled
> that cable up out of the ground throwing blue, purple, and green fire
> all over. You could taste it! It was pretty funny - after the initial
> shock, pardon the pun.

Just don't tell the funny story to your insurance agent or an OSHA
official...
Did you try to call before you dig ;-) ? Was it all customer's
infrastructure or some public stuff as well?

--

Best Regards,
Dmitri Abaimov, RCDD
http://www.cabling-design.com/
Home Cabling Guide, Cabling Forum, color codes, pinouts and other useful
resources for premises cabling users and pros



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Posted by DecaturTxCowboy on July 19, 2006, 12:02 pm
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Dmitri(Cabling-Design.com) wrote:
> Just don't tell the funny story to your insurance agent or an OSHA
> official...
> Did you try to call before you dig ;-) ? Was it all customer's
> infrastructure or some public stuff as well?

No...was all on the customer's private premises with signed liability
waiver. State mandated calling before digging only gets the gas, water,
pipeline, and power companies alerted...not private facilities.

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