conduit fill chart?

[Cable Joe]

I am looking for a conduit fill chart for Cat5 cables. I can't seem to find
one in the NEC listed for cables. It's all listed by AWG and kcmil's

Does anyone have access to this?

Thanks.

[Dale Farmer]

Post by Cable Joe
I am looking for a conduit fill chart for Cat5 cables. I can't seem to find
one in the NEC listed for cables. It's all listed by AWG and kcmil's
Does anyone have access to this?
Thanks.

You wont find it in the NEC, as it is a low voltage cable. ALso different
brands have different overall sizes, so you need to know what exact
cable you will be using to get max capacities.
My rule of thumb is 3/4's filled max. I also prefer not to use any
conduit smaller than 3/4 inch. All corners are done with sweep
bends, and straight through pull boxes only.
When I need to do this, I just recreate the table experimentally.
Takes about five minutes, thirty or forty feet of scrap cable,
and a piece of paper with the various conduit sizes drawn actual
inside diameters on it.
My fuzzy memory is:
1/2 gets one
3/4 gets 3
1' gets 5
2' gets 10 or so.
4' gets 24 or more.
More than that I spec multiple 4', as conduit bigger than that gets
real expensive and is a hassle to install.
That being said, I don't often have to use conduit for data cables.
If I am installing empty or mostly empty boxes for future expansion,
Then a double gang deep box and one inch EMT or plastic conduit.


--Dale

[Justin Time]

Post by Cable Joe
I am looking for a conduit fill chart for Cat5 cables. I can't seem to find
one in the NEC listed for cables. It's all listed by AWG and kcmil's
Does anyone have access to this?
Thanks.

Low voltage cable is exempt under the NEC from conduit fill ratios.
See Article 90-2(b)(4) and 90-3.

It is generally good practice to follow the 40% rule, that is design
your installations to not exceed a 40% fill ratio when your job is
complete.

Rodgers Platt

[Roger Halstead]

Post by Justin Time

Post by Cable Joe
I am looking for a conduit fill chart for Cat5 cables. I can't seem to find
one in the NEC listed for cables. It's all listed by AWG and kcmil's
Does anyone have access to this?
Thanks.

Low voltage cable is exempt under the NEC from conduit fill ratios.
See Article 90-2(b)(4) and 90-3.
It is generally good practice to follow the 40% rule, that is design
your installations to not exceed a 40% fill ratio when your job is
complete.

I put a 135 foot run in PVC conduit. I couldn't get more than a
relative short run to work in metal conduit.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair?)
www.rogerhalstead.com
Return address modified due to dumb virus checkers

Post by Justin Time
Rodgers Platt

[Tom Debiec]

Category 5 and 6 cables are manufactured to the requirements of
Article 800 of the NEC. Even though the cables are not printed they
are rated 300V and are not considered low voltage cables.

[Justin T. Clausen]

Post by Cable Joe
I am looking for a conduit fill chart for Cat5 cables. I can't seem to find
one in the NEC listed for cables. It's all listed by AWG and kcmil's
Does anyone have access to this?
Thanks.

Krone (http://www.kroneamericas.com) has a niffty little Flash file of
a capasity calculator spin dial that is downloadable. Of course
they're trying to sell you on their new Air cable.
We have internal standards, that are based on TIA/EIA and BICSI but a
little more conservitive.
1"= 6
2"= 26
4"=102
and that's based on a nominal of .21" OD on the cable. Of course
that's a fairly small Cat5e, so Cat6 are that much bigger.

Now, to deviate from that, I've seen similar discussions in other
places that say what really matters is your firestopping matterial.
That you must base your cable fill on the manufacture requirements for
that. And that is code.

[dr]

I'm looking for a panduit wire duct mounting clip. I'd like to get it by
Friday. Local folks are out. Factory is stating 3 weeks lead time. Any
suggestions on mail order that might have it.

Panduit part number is S3F-C. It's a 3" mounting clip for their 3" wire
duct products.

Thanks

[zxc]

fd

Post by dr
I'm looking for a panduit wire duct mounting clip. I'd like to get it by
Friday. Local folks are out. Factory is stating 3 weeks lead time. Any
suggestions on mail order that might have it.
Panduit part number is S3F-C. It's a 3" mounting clip for their 3" wire
duct products.
Thanks