I'm trying to determine whether a 120 volt circuit sharing the same conduit and junction box as an RG11 coax and a fiber cable is code-compliant. My gut says no. I'm also unsure about classification (1,2, or 3) for coax and fiber. Do they fall under this classification system, or are they their own class? Thanks in advance.
Line Voltage and Low Voltage in Same Conduit/Junction Box
- Thread starter A-1Sparky
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The fiber would not have a class like found in Article 725. You need to look at Article 770 for the fiber, but it is not likely that it would be a code issue to install it with the power. You need to look at what the coax is doing to find what article may apply. It is possible that the coax would be covered by Article 725, but not likely.
kingpb
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Does voltage rating of insulation come into play, e.g. the 120V cable will be 600V, is the coax 300V?
- Location
- Illinois
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- retired electrician
Not really. The rule in 300.3(B) does not require that all of the insulation have the same rating. It only requires that all of the insulation have a rating equal to or greater than the highest voltage on any conductor in the raceway.
I'm assuming that the fiber would be exempt from this requirement, as it doesn't contain a "conductor."
Beat me to it. Good on ya'. :happyyes:
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