Electrical wiring in the United Kingdom
Open-knowledge reference entry
Electrical wiring in the United Kingdom refers to the practices and standards utilised in constructing electrical installations within domestic, commercial, industrial, and other structures and locations (such as marinas or caravan parks), within the region of the United Kingdom. This does not include the topics of electrical power transmission and distribution.
Installations are distinguished by a number of criteria, such as voltage (high, low, extra low), phase (single or three-phase), nature of electrical signal (power, data), type and design of cable (conductors and insulators used, cable design, solid/fixed or stranded/flexible, intended use, protective materials), circuit design (ring, radial), and so on.
Electrical wiring is ultimately regulated to ensure safety of operation, by such as the building regulations, currently legislated as the Building Regulations 2010, which lists "controlled services" such as electric wiring that must follow specific directions and standards, and the Electricity at Work Regulations 1989. The detailed rules for end-use wiring followed for practical purposes are those of BS 7671 Requirements for Electrical Installations. (IET Wiring Regulations), currently in its 18th edition, which provide the detailed descriptions referred to by legislation.
UK electrical wiring standards are largely harmonised with the regulations in other European countries and the international IEC 60446 standard. However, there are a number of specific national practices, habits and traditions that differ significantly from other countries, and which in some cases survived harmonisation. These include the use of ring circuits for domestic and light commercial fixed wiring, fused plugs, and for circuits installed prior to harmonisation, historically unique wiring colours.
Common terminology
Regulatory
BS 7671 "Requirements for Electrical Installations.
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