nd colortran

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    What does ND mean regarding a plug on a pipe?

    Hello,There are plugs on the electrics pipes that are labeled ND, while all the other plugs are gvien a number. What does ND mean and how do I get access to the power through our dimmers. I believe this is an old Colortran wiring system, now controlelled by a new ETC dimmer panel. The dimmer...