phase tape

[michaelsharp]

when running a tray cable number #10AWG or #12AWG for a 120 volt AC circuit where the conductors are black, red, blue. Can white phase tape be applied to the blue conductor, and green phase tape applied to the red conductor?

 

[jumper]

Assuming you are trying to identify a neutral and an EGC/grounding conductor. No.

Wires smaller than #6 for a neutral and EGC have to be their respective colors.

Silly rule, but it exists.

 

[MAC702]

This is a preassembled cable assembly, so would it be allowed an exception? If so, the wire would need appropriate color its entire exposed length.

I know with 2-conductor NM, we are allowed to repurpose a white to be a second hot color. But I've no experience wanting to do the same with tray cable.

Perhaps tray cable is more commonly available with the different combinations.

 

[Saturn_Europa]

(B) Multiconductor Cable. Where the conditions of
maintenance and supervision ensure that only qualified persons
service the installation, one or more insulated conductors
in a multiconductor cable, at the time of installation,
shall be permitted to be permanently identified as equipment
grounding conductors at each end and at every point
where the conductors are accessible by one of the following
means:
(1) Stripping the insulation from the entire exposed length
(2) Coloring the exposed insulation green
(3) Marking the exposed insulation


NEC 2014 250.119

I've used this quite often.