Electrical circuits, cables, plugs and appliances are designed to reduce the chances of receiving an electric shock. The inner wires are colour coded:. This should grip the cable itself, and not the individual wires inside it. The blue neutral wire goes to the left, the brown live wire to the right.
You should know the colour coding for electrical wires and the function of each wire.
The fuse fits next to the live wire.
The diagram shows the key features of a .
The size of the current flowing depends on the potential difference ( voltage) . How have wiring colours changed in the UK? The neutral black has been replaced by blue. The line red and has been replaced by brown. The earth is still identified by green and yellow. The new standard colour code does not use red.
Where new wiring is mixed with ol cables must be clearly marked to prevent interchange of phase and neutral. US, AC:The US National Electrical Code only mandates white (or grey) for the neutral power conductor and bare copper, green, or green with yellow stripe for the protective ground. In principle any other colors except these may be used for the power conductors. The colors adopted as local practice are shown in Table . UK plugs use brown insulation for the live wire , blue insulation for the neutral wire and green with yellow stripes insulation for the earth wire.
But why this particular combination of colours ? The answer is deceptively simple: there is no type of colour blindness that will result in these wires becoming confused . Make sure the electrical cord is firmly gripped by the arrestor clips. The green and yellow wire must always be inserted into the top pin. Find out how to stay safe when using electricity in the different areas of your home, what the safety features of your electrical installation are and how they work.
Again, the core colours have change from red to brown (live) and black to blue ( neutral ). What Have Wire Colours Changed to? Each pin must be correctly connected to the three wires in the electrical cable. Each wire has its own specified colour . A correctly wired three-pin mains electricity plug is important for using electricity safely. A secondary school revision resource for AQA Additional GCSE Science about electricity and mains electricity.
Finaly insert the live Correctly wired plug. If the plug has screw type cord clamp, remove or loosen this first. However if you do need to rewire, there is only one way to wire an electrical plug safely.
Study the diagram below and ensure that you always connect the correct colour to the correct letter.
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