Are there any regulations regarding the color of instrument cables?
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As the title suggests, I’m a beginner. I’m currently working at an electronics factory owned by a Korean company, and the cable colors specified in the design seem off to me. I was wondering if there are any standards in China regarding this? Is it mandatory? DI/DO wires (white), AI/AO/RTD (red, blue, green), power cables (black, white) – DI/DO of the control system, power cables (black, white)
Korean companies, man, you’re amazing. In the countryside where we live, we’ve never heard of any requirements regarding line color. It’s all chaotic; there are reds, yellows, greens, blacks, and whites – everything under the sun.
You can request the corresponding color according to the practices at the factory.
There is no such rule. Specifying the color of the wire core is not necessarily a bad thing in theory, but the question is whether cable manufacturers will be willing to meet such procurement requirements.
I think this refers to the wiring inside the cabinet, with color differentiation required. Cable laying is a very labor-intensive task; the insulation sheaths are almost always black, while intrinsically safe cables are blue and fire-resistant cables are red. If it is only a requirement regarding the color of single-core cables, such a requirement is acceptable; some DCS cabinets are already organized accordingly inside.
Is it the outer coating of the cable or the insulation covering of the core? If it’s the latter, that’s great as it makes subsequent maintenance much easier