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#69098 - 08/27/06 02:26 PM Plasma and other TV wires inside walls  
jwhite  Offline
Member
Joined: Dec 2005
Posts: 64
Trenton, NC, USA
I am going on memory here so forgive me if I confuse the facts. I am posting to clear that part up.

I read on message boards that fishing regular tv signal wires, from reciever to screen, inside walls is not code compliant, or safe.

How much of this is fact, and how much is urban legand?


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#69099 - 08/27/06 03:03 PM Re: Plasma and other TV wires inside walls  
Sixer  Offline
Member
Joined: Aug 2005
Posts: 265
Canada
Depends on the type of wire you use. Here in Canada if it's "FT-4" rated (flame test) it's ok.


Sixer

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

#69100 - 08/27/06 03:14 PM Re: Plasma and other TV wires inside walls  
jwhite  Offline
Member
Joined: Dec 2005
Posts: 64
Trenton, NC, USA
That is my question. Is the need for rated wire urban legand, or does anyone have links to documentation saying that fires have or could start due to use of improper wire?


#69101 - 08/27/06 03:53 PM Re: Plasma and other TV wires inside walls  
LK  Offline
Member
Joined: Jan 2003
Posts: 1,429
New Jersey
"Is the need for rated wire urban legand"

The word urban legand simply means, no one bothered to look it up, so if someone told you it was an urban legand, he most likely din't know.

Try 820.49 Fire Resistance of CATV Cables
and 820.50

Remember, you need to consider, not only the electrical codes, but fire codes.


#69102 - 08/27/06 05:12 PM Re: Plasma and other TV wires inside walls  
jwhite  Offline
Member
Joined: Dec 2005
Posts: 64
Trenton, NC, USA
Thanks LK. What version of the code are you using? I cannot find those sections in the 2005


#69103 - 08/27/06 06:32 PM Re: Plasma and other TV wires inside walls  
Ron  Offline
Member
Joined: Mar 2002
Posts: 582
White Plains, NY
And 800.50 for communication type circuits.

2002 NEC

[This message has been edited by Ron (edited 08-27-2006).]


Ron

#69104 - 08/27/06 08:26 PM Re: Plasma and other TV wires inside walls  
macmikeman  Offline
Member
Joined: Jul 2002
Posts: 717
Honolulu, Hawaii
Anybody remember those threads and pictures about the fires started from high gain audio cables getting run inside walls? From about 3 years back I think.


#69105 - 08/27/06 09:11 PM Re: Plasma and other TV wires inside walls  
LK  Offline
Member
Joined: Jan 2003
Posts: 1,429
New Jersey
Thanks Ron

Yes 2002 Book

Audio equipment, and wiring, keeps the fire trucks running, they can produce high levels of heat, a large percent of our building fires were audio related, everything from papers stored near, left on amps. to amps overheating and erupting in flames, my guess is there are more fires caused from audio equipment, then electrical systems in the home.

Oh, and don't forget how many cars go up in flames from amps that shake the neighborhood.


#69106 - 08/27/06 09:12 PM Re: Plasma and other TV wires inside walls  
hbiss  Offline
Member
Joined: Dec 2003
Posts: 886
Hawthorne, NY USA
In the US according to the NEC the cables have to be listed as CM, CMX, CL2 or CL3 or any combination of each (dual listed). Listing has to be printed on the jacket.

I don't know of any thread relating to a fire started by "high gain audio cables", whatever that is. If someone finds it I would be happy to comment.

The low voltage and signal cable safety issue is related to what their composition will contribute to the spread of fire as well as the fire and smoke load itself should they be ignited by an external source. Heating of the cable due to excessive current is not a concern since if used according to code it would not be a factor.

-Hal


#69107 - 08/27/06 09:26 PM Re: Plasma and other TV wires inside walls  
hbiss  Offline
Member
Joined: Dec 2003
Posts: 886
Hawthorne, NY USA
Audio equipment, and wiring, keeps the fire trucks running, they can produce high levels of heat, a large percent of our building fires were audio related, everything from papers stored near, left on amps. to amps overheating and erupting in flames, my guess is there are more fires caused from audio equipment, then electrical systems in the home.

Sure, I can see equipment overheating because of flammables blocking the ventilation and line voltage wiring being a cause of fires especially with power strips and overloaded receptacles. But to say "a large percent of our building fires were audio related" and "my guess is there are more fires caused from audio equipment, then electrical systems in the home" is really a stretch. Sounds like typical firemen who blame everything they can't pinpoint on an electrical problem. The stereo is burned up so it must be the cause.

-Hal


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