Low voltage cable through concrete

[Nietz001]

Can 24 volt cable be run through concrete without being installed in a raceway? What about a sheetrock/plaster wall. I can't find it in the NEC unless mechanical protection is the restriction. Help please.

 

[RUWired]

310.7 requires cables to be identified for the use. If your cable is listed for direct buried use then your ok.

Rick

 

[Nietz001]

I was just thinking more in terms of a cinder block wall. The installation would be for a card access system. I see it done all the time and was just wondering if it should be permitted.

 

[hbiss]

It is done all the time and there is nothing to restrict it EXCEPT if the wall or partition is of fire rated construction. Then you need to look at a sleeve and fire stopping.

-Hal