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British Standard BS 7671 "Requirements for electrical installations" is the national standard in the United Kingdom for low voltage
Low voltage

Low voltage is an electrical engineering term that broadly identifies safety considerations of an electricity supply system based on the voltage used....
 electrical installations. It is also used as a national standard by Mauritius
Mauritius

Mauritius , officially the Republic of Mauritius, , is an island nation off the coast of the African continent in the southwest Indian Ocean, about 900 kilometres east of Madagascar....
, St Lucia, Saint Vincent and the Grenadines
Saint Vincent and the Grenadines

Saint Vincent and the Grenadines is an island nation in the Lesser Antilles island arc of the Caribbean Sea. Its territory consists of the main island of Saint Vincent and the northern two-thirds of the Grenadines....
, Sierra Leone
Sierra Leone

Sierra Leone, officially the Republic of Sierra Leone, is a country in West Africa. It is bordered by Guinea in the northeast, Liberia in the southeast, and the Atlantic Ocean in the southwest....
, Sri Lanka
Sri Lanka

Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka is an island country in South Asia, located about off the southern coast of India....
, Trinidad and Tobago
Trinidad and Tobago

The Republic of Trinidad and Tobago is an island country in the southern Caribbean, lying northeast of the South American country of Venezuela and south of Grenada in the Lesser Antilles....
, and Uganda
Uganda

The Republic of Uganda is a landlocked country in East Africa. It is bordered on the east by Kenya, on the north by Sudan, on the west by the Democratic Republic of the Congo, on the southwest by Rwanda, and on the south by Tanzania....
, and several other countries base their wiring regulations on BS 7671. The IET
Institution of Engineering and Technology

The Institution of Engineering and Technology is a United Kingdom professional body for those working in engineering and technology in the United Kingdom and worldwide....
 (formerly IEE
Institution of Electrical Engineers

The Institution of Electrical Engineers or IEE was a British professional organisation for electronics, electrical, manufacturing and Information technology professionals....
) has published wiring regulations in the United Kingdom since 1882. Since their 15th edition (1981), these regulations have closely followed the corresponding international standard IEC 60364
IEC 60364

IEC 60364 Electrical Installations for Buildings is the International Electrotechnical Commission's international standard on electrical installations of buildings....
.






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British Standard BS 7671 "Requirements for electrical installations" is the national standard in the United Kingdom for low voltage
Low voltage

Low voltage is an electrical engineering term that broadly identifies safety considerations of an electricity supply system based on the voltage used....
 electrical installations. It is also used as a national standard by Mauritius
Mauritius

Mauritius , officially the Republic of Mauritius, , is an island nation off the coast of the African continent in the southwest Indian Ocean, about 900 kilometres east of Madagascar....
, St Lucia, Saint Vincent and the Grenadines
Saint Vincent and the Grenadines

Saint Vincent and the Grenadines is an island nation in the Lesser Antilles island arc of the Caribbean Sea. Its territory consists of the main island of Saint Vincent and the northern two-thirds of the Grenadines....
, Sierra Leone
Sierra Leone

Sierra Leone, officially the Republic of Sierra Leone, is a country in West Africa. It is bordered by Guinea in the northeast, Liberia in the southeast, and the Atlantic Ocean in the southwest....
, Sri Lanka
Sri Lanka

Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka is an island country in South Asia, located about off the southern coast of India....
, Trinidad and Tobago
Trinidad and Tobago

The Republic of Trinidad and Tobago is an island country in the southern Caribbean, lying northeast of the South American country of Venezuela and south of Grenada in the Lesser Antilles....
, and Uganda
Uganda

The Republic of Uganda is a landlocked country in East Africa. It is bordered on the east by Kenya, on the north by Sudan, on the west by the Democratic Republic of the Congo, on the southwest by Rwanda, and on the south by Tanzania....
, and several other countries base their wiring regulations on BS 7671. The IET
Institution of Engineering and Technology

The Institution of Engineering and Technology is a United Kingdom professional body for those working in engineering and technology in the United Kingdom and worldwide....
 (formerly IEE
Institution of Electrical Engineers

The Institution of Electrical Engineers or IEE was a British professional organisation for electronics, electrical, manufacturing and Information technology professionals....
) has published wiring regulations in the United Kingdom since 1882. Since their 15th edition (1981), these regulations have closely followed the corresponding international standard IEC 60364
IEC 60364

IEC 60364 Electrical Installations for Buildings is the International Electrotechnical Commission's international standard on electrical installations of buildings....
. Today, they are largely based on European CENELEC harmonization documents, and therefore are technically very similar to the current wiring regulations of other European countries. In 1992, the IEE Wiring Regulations became British Standard BS 7671
BS 7671

British Standard BS 7671 "Requirements for electrical installations" is the national standard in the United Kingdom for low voltage electrical installations....
 and they are now treated similar to other British Standards. They are maintained by the Joint IET/BSI Technical Committee JPEL/64, the UK National Committee for Wiring Regulations. Although the IET and BSI are non-governmental organizations and the Wiring Regulations are non-statutory, they are referenced in several UK statutory instrument
Statutory Instrument

A Statutory Instrument is the principal form in which delegated legislation or secondary legislation is made in Great Britain.Statutory Instruments are governed by the Statutory Instruments Act 1946....
s.

The BSI publish numerous titles concerning acceptable standards of design/safety/quality etc. in various fields. BS 7671 : 2001 (AMD No 2 : 2004) concerns the safety of electrical wiring
Electrical wiring

Electrical wiring in general refers to insulated conductor used to carry electricity, and associated devices. This article describes general aspects of electrical wiring as used to provide power in buildings and structures, commonly referred to as building wiring....
 in buildings (dwellings, commercial, industrial or otherwise) – generally known as the "Regs" (wiring regulations) – and succeeds the previous publication the 16th Edition of the Wiring Regulations.

The On-Site Guide is a handbook that contains some information not in BS 7671:2001. It is meant as a handy notebook reference for electricians working on building sites.

17th Edition

The 17th edition, released in January 2008, was made mandatory for all installations tested, designed or constructed after July 1, 2008. One of the more significant changes is (chapter 41) that 30 mA RCD
Residual-current device

A residual current device , similar to that of a residual current circuit breaker , is an electrical wiring device that disconnects a circuit whenever it detects that the electric current is not balanced between the energized conductor and the return Ground and neutral conductor....
s will be required for socket outlets that are for use by ordinary persons and are intended for general use. This improves the level of protection against electrical shock in the UK to a level comparable to that in other EU countries. The 17th edition incorporates new sections relating to microgeneration
Microgeneration

Microgeneration is the generation of zero or low-carbon heat and power by individuals, small businesses and communities to meet their own needs....
 and solar photovoltaic systems.

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See also

  • British Standards
    British Standards

    British Standards are produced by BSI British Standards, a division of BSI Group that is incorporated under a Royal Charter and is formally designated as the Standards organization#National Standards Bodies for the UK....
  • Electrical wiring
    Electrical wiring

    Electrical wiring in general refers to insulated conductor used to carry electricity, and associated devices. This article describes general aspects of electrical wiring as used to provide power in buildings and structures, commonly referred to as building wiring....
  • Electrical wiring (UK)
    Electrical wiring (UK)

    The modern UK standards and regulations for electrical wiring no longer differ substantially from Electrical wiring . However, there are a number of noteworthy national peculiarities, habits and traditions associated with domestic electrical wiring in the UK that differ significantly from other countries....
  • IEC 60364
    IEC 60364

    IEC 60364 Electrical Installations for Buildings is the International Electrotechnical Commission's international standard on electrical installations of buildings....
  • Earthing system
    Earthing system

    In electricity supply systems, an Ground system defines the electrical potential of the conductors relative to that of the Earth's conductive surface....