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The standard wiring colours in the UK are (as of 2006) the same as elsewhere in Europe and follow international standard IEC 60446. This colour scheme had already been introduced for appliance flexes in the UK in the early 1970s, however the original red/black colour scheme recommended by the IEE for fixed wiring was retained until 2006, albeit ...
The cable core colours are described in IEC 60304 (1982-01), Standard colours for insulation for low- frequency cables and wires. The three-phase phase colours are brown, black and grey instead of red, yellow and blue. Where a circuit includes a neutral or mid-point conductor identified by colour, the colour used shall be blue.
Mnemonics commonly taught in UK engineering courses include: Bye Bye Rosie Off You Go to Birmingham Via Great Western. [10] Bye Bye Rosie Off You Go to Bristol Via Great Western. [8] Bye Bye Rosie Off You Go to Become a Very Good Wife. [7] Bill Brown Realised Only Yesterday Good Boys Value Good Work. [8] [9]
The cable connectors and sockets are keyed and colour-coded, according to the voltage range and frequency used; common colours for 50–60 Hz AC power are yellow for 100–130 volts, blue for 200–250 volts, and red for 380–480 volts. The blue fittings are often used for providing weather-proofed exterior sockets for outdoor apparatus.
Diagram of a simple electrical cable with three insulated conductors, with IEC colour scheme. About 1950, PVC insulation and jackets were introduced, especially for residential wiring. About the same time, single conductors with a thinner PVC insulation and a thin nylon jacket (e.g. US Type THN, THHN, etc.) became common. [citation needed]
The color combinations are applied to the insulation that covers each conductor. Typically, one color is a prominent background color of the insulation, and the other is a tracer, consisting of stripes, rings, or dots, applied over the background. The background color always matches the tracer color of its paired conductor, and vice versa.
An electrical code is a term for a set of regulations for the design and installation of electrical wiring in a building. The intention of such regulations is to provide standards to ensure electrical wiring systems are safe for people and property, protecting them from electrical shock and fire hazards.
coaxial cable A cable with an inner conductor centered inside a flexible tubular conductor, used for radio frequency transmission lines. Cockcroft–Walton generator A kind of circuit for generating very high DC voltage. cogeneration Production of electricity along with some other desired product, such as process steam or desalinated water ...
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related to: 240v cable colours uk list of words and definitions