Dimming Wires

[kwired]

We use 18 AWG Stranded TFFN, pulled in with power conductors in conduit:
https://www.encorewire.com/wp-content/uploads/EncoreWire-TFFN.pdf
Its rated 600V, and listed under 725.49(B)

I would prefer a label 'Class 1 system' rather than the sharpie blackout.

I would encourage you to pick obvious colors that are not used in your building.
There was a tenancy to use grey and purple which I have seen mistakenly connected to neutrals.
I spec yellow and purple.
Cheers

Yellow is commonly used as one of the 277/480 colors, just like the grey often is for the 277 neutral.

 

[tortuga]

Yellow is commonly used as one of the 277/480 colors, just like the grey often is for the 277 neutral.

Sometimes I feel like I am running out of colors.

 

[jusme123]

So what's crazy to me is if you have a job that's full conduit you have to run two separate conduits to each fixture one for dimming wires and one for power. On a big job that can be a huge cost. Thanks

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Buy the MC (MC Luminary) with control wires within power cable, you’ll thank me later, huge time/ headache saver