Wire color for DC
Wire color for DC
I searched the word COLOR in the 2008 NEC, and did not find any link to wire color and DC applications.
If you are working on an Industrial Machine, you may need to see NFPA 79 Electrical Standard for Industrial Machinery
See NFPA 79 Article 13.2 Identification of Conductors.
The color GREEN with or without one or more YELLOW
stripes shall be used to identify the equipment grounding
conductor where insulated or covered.
Where an ac circuit includes a grounded conductor,
this conductor shall be WHITE, GRAY, or three continuous
WHITE stripes on other than GREEN, BLUE, or ORANGE
insulation along its entire length
The color ORANGE shall be used to identify ungrounded
conductors that remain energized when the main
supply circuit disconnecting means is in the off position. This
color identification shall be strictly reserved for this application
only.
The use of other colors for the purpose of identification
shall be as follows:
(1) BLACK for ungrounded ac and dc power conductors
(2) RED for ungrounded ac control conductors
(3) BLUE for ungrounded dc control conductors
