Home Wiring Colours Uk

By | July 21, 2021



Everything You Need to Know About Home Wiring Colours in the UK



Living in a modern home can be a complicated affair. There’s so much to consider and so many different types of wiring that must all be up to code. Home wiring colours in the UK are essential for ensuring your family’s safety and properly maintaining your appliances and electrical systems. In this article, we’ll discuss all the common wiring colours used in the UK, as well as how to identify them and what each one means.

Installing a new electrical system or making repairs to an existing one requires certain steps that must be followed exactly. Being able to accurately identify the various types of wiring used in homes is key to completing the job correctly. When it comes to electrical wire colours, each one carries its own purpose and importance. Knowing what they are and their respective virtues will help you better understand the task at hand and tackle it with confidence.

Understanding Current vs. Previous UK Wiring Colours



The electric current flowing through wires in the UK has been identified by various wire colours since the early 20th century. From 1904 to 2006, the British Standards Institute (BSI) laid out a universal colour code for electrical wires, which had amended several times over the years. In 2006, the BSI released a new standard, replacing the former colours with a more modern set. Although you may still see the old colours in some homes and buildings, these are gradually being replaced with the newer ones.

The Current UK Wiring Colours



The current home wiring colours in the UK follow a particular pattern, making it easier to identify them. Here is the colour code table:


















Wiring Colour Function
Brown Live Wire
Blue Neutral Wire
Green/Yellow Earth Wire


The brown-coloured wire is the live wire, which carries the main current from the power source to the electrical appliances in the home. The blue wire is the neutral wire, which carries the return current from the appliance back to the power source. Finally, the green and yellow wire is the earth wire, which is used for grounding and short-circuit protection.

Understanding Colours for Special Circumstances



Certain special circumstances require different types of wiring and specific wiring colours. The following are the special wiring colours and their meaning:


  • Grey — Used for dimmers and switches.

  • White — Used for ceiling suspension systems.

  • Red — Used for fire alarms and emergency lighting.

  • Black — Used for extra low voltage equipment.

  • Violet — Used for two-way lighting systems.



These are just a few of the many different home wiring colours used in the UK. If you’re unsure about which type of wire to use for a certain project, consult a professional electrician.

Important Safety Measures



When it comes to handling electrical wiring, safety is always the top priority. Before attempting any home wiring projects, make sure you understand all the safety precautions that need to be taken. Always remember to turn off the power before starting work and use insulated gloves and tools. Additionally, use materials that are certified and up to code. This is especially important if you plan on hiring an electrician to do the job.

It’s extremely important to understand the different types of home wiring colours in the UK when tackling any electrical projects. Being aware of the various wire colours and their respective functions will allow you to confidently handle any electrical issues you may come across. By following the proper guidelines, you can ensure the safety of your family and keep your home’s electrical system in perfect condition.


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