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Understanding the colour coding of domestic three-core wires

Electricity and circuits • Domestic electricity and safety

Key concepts

What you'll likely be quizzed about

  • The brown wire is the live wire that carries the current from the power supply to the appliance.
  • This wire is critical for the operation of electrical devices, allowing them to function properly.
  • Understanding its role helps ensure that wiring is respected during installation and troubleshooting.

Flashcards

Test your knowledge with interactive flashcards

What does the presence of the earth wire indicate in a wiring setup?

Click to reveal answer

It indicates added safety features to protect against electric shocks in case of faults.

Key notes

Important points to keep in mind

Brown wire is live-carries current.

Blue wire is neutral-returns current.

Green/yellow wire is earth-provides protection.

Always turn off power before working on wires.

Follow colour codes meticulously for safety.

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