CM CABLE with line voltage to switch

[Electrician123456789]

Is it okay to have cm cable cl2 in same conduit as line voltage to switch, but come out of a jbox and be in free air to fixtures at the same time

From what I've read, you can have the cable in the same conduit since the circuit is 120V and the cm cl2 cable is rated for 150V.

The cable is re-classified as a class 1 and will have to be wired with chapter 3 wiring methods.

But can the cable run down to the switch with 120V then come out of the box and jump to fixtures in free air or if it is in conduit to the switch, does it need to stay in conduit to the light? Can you have part of the 0-10V wiring be class 1 where it's in the conduit and call it class 2 when it's just in free air above the ceiling?

I have read a lot of threads, but haven't seen this scenario.

Thanks in advance
Tom

 

[hbiss]

You can't pull CL2 cable in with the line voltage and call it reclassified. It must have the same voltage rating as the line voltage conductors- 600V.

So, chose a method. Either run CL2 cable independently of the conduit and line voltage or run additional THHN conductors with the line voltage, all in the conduit. Keep in mind that there is luminary cable that combines the line voltage and 0-10 all under one jacket.

-Hal

 

[LarryFine]

You can't pull CL2 cable in with the line voltage and call it reclassified. It must have the same voltage rating as the line voltage conductors- 600V.

Must it match them, or can it merely be rated above the line voltage, such as 300v?

 

[hbiss]

Insulation ratings must match. THHN is 600V. Doesn't matter if it only carries 120V. Your reclassified LV must have the same rating.

You won't find a voltage rating marked on CL2 cables, only on maybe the spool or the specs. That's to prevent use exactly like this.

-Hal