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NEC code for 70V audio

NEC code for 70V audio

NEC code for 70V audio

(OP)
Anyone familiar with the section in NEC that discusses 70V audio?  I was told it was grandfathered in, such that you do not need to have it in conduit, but looking for the article number to reference that.

RE: NEC code for 70V audio

That may be a Class 2 system and not require a raceway, but it could also be a Class 1 system.  Take a look at Article 725 in the NEC.
Don

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