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This was the live wire.
House wiring old electrical wiring colours uk. Tv aerial cables do not carry any voltage but many are brown in colour the same colour as the new live wiring in the uk. Black red and green with yellow stripes. The wires inside an nm sheathed cable are color coded to make it possible to identify each one at both ends of the cable and wire correctly. If you re in doubt call a sparky.
If the wiring in your house is older than the 31st march 2004 and you have had some work done e g. This was the neutral wire. The old wiring colours used in the uk in domestic electrical situations and in domestic appliance plugs used to be three colours. Red for the live wire and black for the neutral wire.
The wiring colors differentiate ideally between the hot neutral or ground. It s important that properties get their wiring checked to see if the wiring colours are out of date have deteriorated over time and to check if they comply with bs 7671 wiring regulations. All nm cables contain the basic black insulation and white insulation wires plus the bare copper or green insulated ground wire. Before starting any wiring project it is possible to identify the purposes of the different house electrical wiring if you understand the diverse electrical wire colors and their code.
Although still used today the earth wire used to be pure green prior to 1977. Some properties in uk are currently still using wiring with old colour coding. The old electrical wiring colours in the uk are green and yellow or bare for the earth wire. An extension or partial rewire you may have a combination of the old and the new harmonised colours shown above.
The live wire colour used to be red. These electrical color codes specify the function of each wire in a given circuit. The average lifespan for wiring is around 30 40 years and the condition deteriorates over time. Since the 1st april 2006 it has been mandatory to use the new colour system in new installations.
The old colours were. It is important that the wiring is done in accordance with bs7671 wiring regulations. The earth wire colour used to be pure green before 1977 then changed to green and yellow and has been the same ever since. Many satellite and cable tv customers will have a black cable going into the back of the tv the same colour as the old neutral wire.
Prior to 2006 different colours of cables were used in uk domestic electrical wiring and appliances for the neutral and live wires. To ensure safety it is important to make sure the wiring is in good condition.
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