Identification of 600 volt current carrying conductors

[NYwiregirl]

As far as I can locate, it appears the NEC does not specify color coding for current carrying conductors. On 120/240, 120/208, 480/277 systems, there are generally accepted color coding practices for current carrying conductors, which I use religiously... but my next project will be in an old factory building where feeders are a 600 volt delta open conductor/insulator standoff arrangement on the concrete ceiling, and I must provide a tap to a disconnect switch.

As a matter of practice, I'd like to identify phase A, B, and C with proper color 600 volt rated marking tape. Suggestions?
TIA !

 

[Dennis Alwon]

Pick colors that are different from the other voltages and install a marker at the main panel with the color codes and their voltages.

 

[Dennis Alwon]

Here is the nec code 2011 statement-- Perhaps someone here knows a standard for colors but the NEC does not care, however I like consistency.

210.5 Identification for Branch Circuits.
(A) Grounded Conductor. The grounded conductor of a branch circuit shall be identified in accordance with 200.6.
(B) Equipment Grounding Conductor. The equipment grounding conductor shall be identified in accordance with 250.119.
(C) Identification of Ungrounded Conductors. Ungrounded conductors shall be identified in accordance with 210.5(C)(1), (2), and (3).
(1) Application. Where the premises wiring system has branch circuits supplied from more than one nominal voltage system, each ungrounded conductor of a branch circuit shall be identified by phase or line and system at all termination, connection, and splice points.
(2) Means of Identification. The means of identification shall be permitted to be by separate color coding, marking tape, tagging, or other approved means.
(3) Posting of Identification Means. The method utilized for conductors originating within each branch-circuit panelboard or similar branch-circuit distribution equipment shall be documented in a manner that is readily available or shall be permanently posted at each branch-circuit panelboard or similar branch-circuit distribution equipment.

 

[NYwiregirl]

Pick colors that are different from the other voltages and install a marker at the main panel with the color codes and their voltages.

Sounds like reasonable advice, but this business runs the whole route, and I will in fact have 120/240, 120/208, 480/277 AND 600 volt systems all in the same electrical room. (it's an IT company, their UPS system is 480Pri//120/208sec, their HVAC is 480, their branch panel for lighting and general purpose recepts is from a different transformer at 120/240.
So I've used up Black, Red, Blue for the 120/208/240... Brown, Orange, Yellow for the 480... can't use white or gray as they are reserved for neutrals...
That leaves violet... unless I'm forgetting something ?

 

[NYwiregirl]

Would it be considered highly unkosher to mark as solid violet on all 3 conductors with "candy-striping" one of brown, one of orange, and one of yellow?

I know the NEC strictly prohibits "candy-striping" or "banding", and makes clear the "continuous" designation... I'm thinking "continuous purple with a candy-striped secondary marking over it" (And yes, clarified by signage/chart on the aparatus involved, which would only be 3 pieces.)