Hi, this is my first post here. Your forums have been incredibly useful to me in the past and I am proud to finally ask a question.
Getting to the point, I had some questions about a set of three 3-way switches that I was recently surveying. One set of controls for these circuits is outdoors, with individual 12 AWG THWN conductors traveling through NM conduit. The unswitched hot to the 3 switches is black, but each switch has a pair of identical-color travelers coming from it (2 red, 2 blue, and 2 black-marked whites). I haven't been able to find anything in the NEC regarding the coloring of pairs of switched hots (and honestly I did forget :happysad: ). Is it okay to have both travelers from a single switch be the same color? Thanks.
For 2011
200.7 This will help with your situation somewhat.
(C) Circuits of 50 Volts or More. The use of insulation that is white or gray or that has three continuous white stripes for other than a grounded conductor for circuits of 50 volts or more shall be permitted only as in (1) and (2). (1)
If part of a cable assembly that has the insulation permanently reidentified to indicate its use as an ungrounded conductor by marking tape, painting, or other effective means at its termination and at each location where the conductor is visible and accessible. Identification shall encircle the insulation and shall be a color other than white, gray, or green.
If used for single-pole, 3-way or 4-way switch loops, the reidentified conductor with white or gray insulation or three continuous white stripes shall be used only for the supply to the switch, but not as a return conductor from the switch to the outlet.
For 2008 "existing"
(C) Circuits of 50 Volts or More. The use of insulation that is white or gray or that has three continuous white stripes for other than a grounded conductor for circuits of 50 volts or more shall be permitted only as in (1) through (3). (1)
If part of a cable assembly and where the insulation is permanently reidentified to indicate its use as an ungrounded conductor, by painting or other effective means at its termination, and at each location where the conductor is visible and accessible. Identification shall encircle the insulation and shall be a color other than white, gray, or green.
(2)
Where a cable assembly contains an insulated conductor for single-pole, 3-way or 4-way switch loops and the conductor with white or gray insulation or a marking of three continuous white stripes is used for the supply to the switch but not as a return conductor from the switch to the switched outlet. In these applications, the conductor with white or gray insulation or with three continuous white stripes shall be permanently reidentified to indicate its use by painting or other effective means at its terminations and at each location where the conductor is visible and accessible.