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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

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How should wires be handled during installation?

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Wires should be handled carefully, ensuring all connections are secure and colour codes are respected.

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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