UF-B usage

[ASI]

I am on a project where a phone activated gate opener is being installed.
The GC has provided a single 2" underground conduit from power pull box to the gate location. The electrician on the project said that both power and control (CAT5) can be run in the same conduit if UF-B is used for the power, and a direct burial CAT5 is used for control/comm.

Outside of the EMF/noise considerations, is this type of arrangement NEC compliant? Which articles address this issue?

This also then creates the situation whereas the CAT5 DB is in the same wall box and needs to get to the telco demark. How is this done in code compliant method?


Thanks for the help.

 

[mdshunk]

You can't run your line voltage and your low voltage stuff in the same pipe if you use conductors, but you can if you run cables. The "conduit" in this case is nothing more than a convenient chase to pull cables, no different than a chase in a building or a set of bored holes. The electrician on the job is right, in my opinion, in that he wants to use UF cable rather than conductors along with flooded CAT5 to pull though this conveniently placed "duct", we'll call it. There is no NEC article I can reference, since in my opinion we're not dealing with a raceway here. We're dealing with a duct that happens to be made out of the same material you could use for a raceway.

 

[cadpoint]

All the insulation has to be of the same rating !
I also don't agree on the word play on conduit as a raceway or otherwise.
But hey it's Happy Friday....
Enjoy !