Low voltage in same conduit with 120v?

[infinkc]

Is this ok if the low voltage has wire that has a high voltage rating? Planning to do landscape lights and some outlets.

 

[Duke74]

No. It’s against code.

 

[pattenp]

Yes you can if the wire used for the low voltage circuit has the same insulation voltage rating as the line voltage circuit. See NEC 300.3(C)(1)

 

[Duke74]

it could be. I am in Canada and whenever we are running Low voltage cable it’s for Dc power and we never run dc power in the same conduit as ac power. We run it for controls too but we keep it separate as well. It might just be how we do it in our company. I am gonna have to look at my Cec book.

 

[Terry D]

This is a often asked question, and can be confusing to know the correct answer. There are class 1, 2 and 3 circuits. Class 1 can occupy the same raceway and enclosure as your power conductors as long as the insulations are the same, basically all need to have 600 volt insulation. Class 2 and 3 are not allowed to be in the same raceway or enclosure, regardless of the insulation. It has to do with the rating on the transformer. If your transformer for your low voltage lights says class 2 or 3 on it, then I would say no. I don't completely understand it all. I know that I have seen it a lot in HVAC, where the 24 volt is with the 240 volt