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#175084 - 02/21/08 09:43 PM cat 5 conduit fill
wacked Offline

Registered: 12/19/06
Posts: 33
I don't have my code book handy at the moment but does anybody know the table to use for calculating cat 5 fill in a conduit? I came across this tonight while scoping out a job. ( 10 cat 5 in a one inch conduit )

2014 / 2011 NEC & Related Books and Study Guides
#175085 - 02/21/08 09:49 PM Re: cat 5 conduit fill [Re: wacked]
leland Offline

Registered: 08/20/07
Posts: 856
Loc: Lowell area, Ma. USA
How many pullers and how much lube do you have on hand?

Sorry. my silly side came out. But some truth to it.

I've no idea, not even sure if it's in the book.

Sorry again, Not much going on tonight for me.:)

#175086 - 02/21/08 10:43 PM Re: cat 5 conduit fill [Re: leland]
homer Offline

Registered: 09/30/04
Posts: 68
Loc: Vancouver, WA, USA
Data conduits often live by there own rules, but as I recall, 10 cables need about a 1-1/2 conduit, junction boxes every 100 feet and after every two 90 degree bends. Im fairly sure that there is somebody out there who is much smarter than I am who can quote the source. If you have to pull the cables, they pull hard unless they are a slick finish on the jacket. Try Google.
Good luck,

#175095 - 02/22/08 08:12 AM Re: cat 5 conduit fill [Re: homer]
jay8 Offline

Registered: 07/28/05
Posts: 183
Loc: Vancouver, BC
What you are probably refering to is TIA/EIA 568B Standards. Try putting this post on the voice/data section, and you will get your information.

#175097 - 02/22/08 08:51 AM Re: cat 5 conduit fill [Re: jay8]
ggardiner Offline

Registered: 10/22/01
Posts: 81
Loc: Calgary, Alberta Canada
According to a conduit capacity calculator from ADC/Krone 7 Typical 4-PR @ac .25" OD. in a one inch conduit. This would assume no more then 40% fill to allow for reasonable pull.

#175119 - 02/22/08 07:27 PM Re: cat 5 conduit fill [Re: ggardiner]
wacked Offline

Registered: 12/19/06
Posts: 33
ggardiner, have you got an online link to this? Does the 40% rule apply???

#175130 - 02/22/08 10:09 PM Re: cat 5 conduit fill [Re: wacked]
Sixer Offline

Registered: 08/08/05
Posts: 264
Loc: Canada
Today we completed a job of installing conduits and cat3 cables for the hospital. Telus and the IT department wanted required 4" EMT with four 100 pair cables pulled in. This was 40% fill.

"Will it be cheaper if I drill the holes for you?"

#175243 - 02/25/08 02:56 PM Re: cat 5 conduit fill [Re: wacked]
ggardiner Offline

Registered: 10/22/01
Posts: 81
Loc: Calgary, Alberta Canada
No what I have is a disc calculator that ADC gave me during a course on design I took from them two years ago.

#175300 - 02/26/08 09:58 AM Re: cat 5 conduit fill [Re: ggardiner]
mikesh Offline

Registered: 06/07/06
Posts: 614
Loc: Victoria, BC, Canada
I answered this in the other place you asked. 12-1014 Give the rules for wire fill in raceways and the type of load has no bearing. %40 for more than 2 cables up to 200 cables max.

#175317 - 02/26/08 06:15 PM Re: cat 5 conduit fill [Re: mikesh]
techie Offline

Registered: 05/17/05
Posts: 240
Loc: palo alto, ca usa


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