Shielded Audio Sharing Raceway with Data Cabling

[MFortie]

Does anyone have any input on whether running 25V shielded audio cabling in the same raceway with data cabling will cause problems on the data network?

The raceway in question is Wiremold 5400 series (same channel) and the audio signaling is for intercom/pa speakers in a k-6 school...

Thanks in advance.

Mark

 

[GoldDigger]

It is not likely to cause problems on the data network because of the low (audio) frequencies involved.
More likely would be noise in the low level audio signal coming back from the speaker locations if it is a two way intercom rather than an announce-only PA system.
Noise in the feed to the speakers is less likely.

 

[iwire]

I would not be the one to make the decision this is OK.

If either the data or audio folks have troubles they will say it is the mixing of cables that did it.

 

[GrayHair]

I had to run intercom and data, both shielded, in the same conduit several times and did't have any problems. However, iwire is right on the finger pointing.

 

[hbiss]

Either I'm going crazy or I'm dreaming because I can't find it but I swear I saw an addition to 640.9(C) not too long ago that prohibited other cables from being run in the same raceway or conduit with the CL2 output wiring of audio amplifiers. Maybe 2017?

-Hal

 

[hbiss]

Ah, found it, was there all the time. 725.139(F)

Class 2 or Class 3 Conductors or Cables and Audio
System Circuits. Audio system circuits described in
640.9(C), and installed using Class 2 or Class 3 wiring
methods in compliance with 725.133 and 725.154, shall not
be permitted to be installed in the same cable or raceway
with Class 2 or Class 3 conductors or cables.

-Hal