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CATV cable #11806
07/23/02 03:02 PM
07/23/02 03:02 PM
M
mountainman  Offline OP
Member
Joined: Jan 2002
Posts: 54
Richmond Va. U.S.A.
This is for all the inspector members and anyone from U.L. I just inspected a satalite installation on a high rise were the cable was dropped down 13 stories in a riser. The cable is marked CL2P and CATV. I cannot find in article 820-53 were CL2P is the same as CATVP. Can anyone help me out with this?

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Re: CATV cable #11807
07/23/02 06:13 PM
07/23/02 06:13 PM
D
Dana  Offline
Junior Member
Joined: Jul 2002
Posts: 4
Wasilla, Alaska, U.S.A. YA!
Shouldn't the cable be marked as a riser "R" rather than a plenum "P"?
The listings aren't the same unless marked as dual purpose.
N.E.C. also specifically prohibits type CATV as riser or plenum cable [820-51 (c)].

Re: CATV cable #11808
07/23/02 07:53 PM
07/23/02 07:53 PM
G
Gwz  Offline
Member
Joined: Apr 2002
Posts: 197
300.19 is not mentioned in 820.

Should vertical support be considered for 13 floors?

Glenn

Re: CATV cable #11809
07/25/02 01:34 AM
07/25/02 01:34 AM
Scott35  Offline

Broom Pusher and
Member
Joined: Oct 2000
Posts: 2,713
Anaheim, CA. USA
Just looking at figure 725-61 [cable substitution hierarchy] from 1996 NEC article 725-61, it says CL2P may be sub'ed for CL2R, and CL2R is listed for use in vertical riser runs penetrating more than one floor.
It also directs from the MPP / CMP box to the CL2P box, which flows out to the CL2R stuff, which is covered in the MPR / CMR section.

Looking at table 820-53 [96 NEC] the permitted sub's for Cable Type CATV include CMP and CMR.

FYI, the "2" in the listing is designating it for use as Class 2 cable

Scott S.E.T.


Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!
Re: CATV cable #11810
07/25/02 04:06 PM
07/25/02 04:06 PM
D
Dana  Offline
Junior Member
Joined: Jul 2002
Posts: 4
Wasilla, Alaska, U.S.A. YA!
Well, Mountainman, looks like they've put the wrong cable downhole.
Hope they come up with a satifactory resolution for you. (Which in my opinion is "Sorry, but it has to be replaced. And it probably should have support wedges on the top, 5th and 9th floors too. Let's check the data sheet from the mfgr." Thanks gwz).
As an aside, which code was the building constructed to? I presumed the 99 when I posted my first reply.


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