NEC Chapter 8
I'm going to put my ethernet and a/v cable in pvc conduit (extremely low voltage).
What codes apply to network wiring. I do not see anything in the NEC.
NEC Chapter 8
Answers based on the 2008 & 2011 NEC. If you're on the '14 already I feel sorry for you.
I asked a licened electrician associate of mine the same question with regard to my basement, specifically, running rough-in wires through PVC (1-1/4" sched 40), and leaving an empty (same spec) pipe with pull strings for future expansions, proximity to A/C, HVAC and flourescent fixtures. I was told....
- keep parallel runs of ethernet, telco and co-ax a minimum of 12" apart from A/C
- keep cross-overs between lo-voltage and A/C as close to 90-degree, right angles, as possible
- do not run A/C and lo-voltage through the same holds drilled through studs
- that there were no restrictions regarding running through PVC
no mention of code requirements/restriction was made, however since SP, above, has referenced an NEC chapter, it would be good to check out.
640.23 Conduit or Tubing.
(A) Number of Conductors. The number of conductors permitted in a single conduit or tubing shall not exceed the percentage fill specified in Table 1, Chapter 9.
800.110 Raceways for Communications Wires and Cables.
Where communications wires and cables are installed in a raceway, the raceway shall be either of a type permitted in Chapter 3 and installed in accordance with Chapter 3 or listed plenum communications raceway, listed riser communications raceway, or listed general-purpose communications raceway installed in accordance with 800.154 and installed in accordance with 362.24 through 362.56, where the requirements applicable to electrical nonmetallic tubing apply. The raceway fill tables of Chapter 3 and Chapter 9 shall not apply.
830.110 Raceways for Low- and Medium-Power Network-Powered Broadband Communications Cables.
Where low- and medium-power network-powered broadband communications cables are installed in a raceway, the raceway shall be of a type permitted in Chapter 3 and installed in accordance with Chapter 3.
Exception: Conduit fill restrictions shall not apply to low-power network-powered broadband communications cables.
what about telco - is the 48 vDC of a POTS line considered "low voltage"? or would that fall under the "low power" exemption above?
Sorry for being dense, just trying to make sure I get it right - I'd hate to have to de-pipe all the network runs i've done so far.
For the audio cable there would be a requirement but for the coax cable none.
I would keep my audio and coax separate from each other so there wouldn’t be any high frequencies that bled from one to the other.
Trivial yes but worth it in the end especially if this is a high end entertainment set up.
My audio has a low hum but if I turn off the receiver it goes away. Sound and visual are in the same wire way.
i'm pretty sure there isn't anything in the NEC covering bend radius for low voltage/low power, but there are defnintely best practice guidelines.