Home wiring comes in a variety of colours to help you identify what different cables and wires are for. While some connotations are universal, different countries may have their own specific home wiring colour codes that you’ll need to consider when carrying out DIY projects. In the UK, all home wiring is identified by the colours red, black, white, green (or yellow) and blue.
Red and black wires are live wires, meaning they carry power from the mains to your electrical units. The neutral wire, which returns the current back to the source, will be white. The earth wire is either green or yellow in colour and should be connected to any exposed metal parts of an appliance, wall fitting, or other outlets, for safety reasons. Finally, blue wires are used in some installation projects to indicate a ‘switched live’.
It’s important to understand the specific wiring colour codes for UK homes before tackling any home wiring job, as getting it wrong could potentially electrocute you, or worse. This is why it’s better to leave home wiring jobs to a professional electrician if you're unsure. Armed with this knowledge, you can now plan how to lay your new wires safely and efficiently, ensuring that your home’s wiring remains up to code.
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