![]() For single-phase, Black (for 120V) or Red (for 277) is used for Line and Grey is used for Neutral. ![]() Earth or protective conductor: Green/Yellow or Green or bare copper conductor.The DuraLabel line of label printers offer a. The color code adopted in the US is as follows: In these cases, color coding should be added during installation, via colored bands that wrap around the wire. NEC does not instruct any requirements for other conductors. Modern design is all about more with less. NEC mandates the color codes for neutral and protective ground as grey and yellow-green respectively. National Electrical Code is followed in the United States and sometimes in Canada. The above-mentioned color codes are followed in the E uropean Union, United Kingdom, China, Hong Kong, Argentina, Russia, Ukraine, Belarus, Kazakhstan and Singapore. Knowing the meaning of the color will keep us and our electrical system safe. We need to know what is the specific purpose for each color before touching it (you better don’t touch or plug-unplug the cable unless you know what is the meaning of its color). (of a Positive Grounded) DC Circuit system: A wire colored in black is different from a cable colored in brown, orange, red, or green. ![]() (of a Negative Earthed) DC Circuit system:
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