Running cables into ceiling for htpc, will powercord run with them cause interference - AVS Forum
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post #1 of 9 Old 03-12-2012, 07:56 AM - Thread Starter
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I plan to run my wires from one room to another for my htpc. As such I have the following wires I want to run up my wall (note not in my wall, will be hidden via the wide cable wire plastic molding painted the same color as my wall) then when it meets my ceiling, a hole drilled to facilitate the wires into the attic, across the attic then down again in the same fashion.

If possible I'd like to run the following together but wanted to check with you all to see if any would be an issue:
(3) usb extension cables
(1) toslink optical cable (for digital audio to my Denon unit)
(1) Hdmi high speed cable
(1) power cord for my projector


Is the power cord I'd like to run with them a problem as it would cause interference?

If so I guess I'll have to run it separately.

Any other problems I'm not even considering?

Again, thanks for your time.
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post #2 of 9 Old 03-12-2012, 08:54 AM
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running the power cord through the wall will probably be out of code and not pass regulations.

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post #3 of 9 Old 03-12-2012, 08:56 AM
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I'm no expert but it will probably not cause interference. Running a regular power cable in-wall, and possibly in attic, is against code. To what degree it actually creates any risk at all is very debatable.
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post #4 of 9 Old 03-12-2012, 08:57 AM
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post #5 of 9 Old 03-12-2012, 09:28 AM
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It is so so easy to run romex using something like the Powerbridge that it's not worth the hazard of running an extension cord inside the ceiling. They are also way less money than they use to be:

http://www.amazon.com/PowerBridge-SS...dp/B003CJTQ2Y/

 

 

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post #6 of 9 Old 03-12-2012, 10:05 AM - Thread Starter
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Yeah I can test it. I was just hoping someone here might know off hand as I haven't purchased all of the cables to run this yet, and what I buy depends on what'll work.

@stardog- Well that is running cables IN the wall (I'm going up the wall).. which is a PIA and a significant added expense (outlets + fishing rods). Besides from what I've read practically speaking it isn't an issue fire wise running a 16awg power cable in the ceiling. It's just an issue if I want to sell my place later on in which case I'd just climb up there and remove the wire before inspection.

Anyone know off hand if the power cord would cause noise in the other wires?
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post #7 of 9 Old 03-12-2012, 11:50 AM
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Quote:
Originally Posted by ryeookin View Post

Yeah I can test it. I was just hoping someone here might know off hand as I haven't purchased all of the cables to run this yet, and what I buy depends on what'll work.

@stardog- Well that is running cables IN the wall (I'm going up the wall).. which is a PIA and a significant added expense (outlets + fishing rods). Besides from what I've read practically speaking it isn't an issue fire wise running a 16awg power cable in the ceiling. It's just an issue if I want to sell my place later on in which case I'd just climb up there and remove the wire before inspection.

Anyone know off hand if the power cord would cause noise in the other wires?

Any electrical causes noise, it doesn't matter which type of cabling you use. You are supposed to run electrical wires away from any low voltage (audio/video) wiring. If you need to cross paths, you are supposed to cross at a 90 degree path.
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post #8 of 9 Old 03-12-2012, 01:35 PM
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Quote:
Originally Posted by StardogChampion View Post

It is so so easy to run romex using something like the Powerbridge that it's not worth the hazard of running an extension cord inside the ceiling. They are also way less money than they use to be:

http://www.amazon.com/PowerBridge-SS...dp/B003CJTQ2Y/

+1 This solution has worked for me.
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post #9 of 9 Old 03-12-2012, 01:39 PM
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Quote:


Any electrical causes noise,

No, it doesn't.
Induced noise is due to electromagnetic induction. If no current flows, there can't be any induced noise.
Differential receivers, such as those used on HDMI ports, nullify common mode induced noise.
USB also uses differential signalling.
Plastic fiber is immune to electromagnetic interference.
So, you're good to go.
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