China Wiring Colour Code

By | August 26, 2023



China wiring codes refer to the colour coding style mandated by China for its electrical wiring installations. The colour-coding system is designed to ensure safety and hassle free operation of all electrical wiring systems in the country. In order to adhere to the regulations regarding the use of certain colours, wiring and cables must be labelled accordingly.

The China colour-coding system consists of five primary colours that must be used in combination with the appropriate secondary colours. The primary colours are red, black, blue, yellow, and green. These primary colours are then combined with the appropriate secondary colours to denote specific purposes. For instance, red and blue are used in combination to mark the conductor of a three-phase power circuit, while blue is used to indicate a neutral in single-phase circuits. Other colour combinations are used to denote specific functions such as overvoltage protection and short circuit protection.

In addition to the primary colours, there is also a grey colour which is used to denote a ground point or a common connection between two points. It is important to note that the grey colour should not be confused with the other primary colours as it does not denote the function of any particular wire or cable. To ensure that the installation of any wiring system is compliant with the China wiring codes, a qualified electrician should always be consulted before starting any work. Additionally, it is important to remember that any changes made to the wiring system must also be done in accordance with the relevant regulations.


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