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| Relevant topics on |
| Electrical installations |
|---|
| Wiring practice by region or country |
| Regulation of electrical installations |
| Cabling and accessories |
| Switching and protection devices |
British StandardBS 7671 'Requirements for Electrical Installations. IET Wiring Regulations', informally called in the electrical community The 'Regs', is the national standard in the United Kingdom for electrical installation and the safety of electrical wiring in domestic, commercial, industrial, and other buildings, also in special installations and locations, such as marinas or caravan parks and medical locations[1]
In general, BS 7671 applies to circuits supplied at nominal voltages (Uo) up to and including 1000 volts AC or 1500 volts DC. The standard therefore covers the Extra Low Voltage (ELV) range (0-50V AC, 0-125V DC), and the Low Voltage (LV) range (50-1000V AC, 125-1500V DC). The frequencies covered for AC are 50 Hz, 60 Hz, and 400 Hz, used in the UK for houses, offices, and commerce. Download whatsapp for windows 8.1 phone. It did not become a recognized British Standard until the publication of the 16th edition in 1992. The standard takes account of the technical substance of agreements reached in CENELEC.[2]
The current version is BS 7671:2018 (the 18th Edition) issued in 2018 and came into effect from 1 January 2019. [3] Amendment 1 to the 18th Edition was published in February 2020 but the only changes were to section 722 (Electric Vehicle Charging Installations). These changes came into immediate effect upon publication release, unlike previous amendments where 6 months elapsed before changes became compliant. [4] BS 7671 is also used as a national standard by Mauritius, St Lucia, Saint Vincent and the Grenadines, Sierra Leone, Sri Lanka, Trinidad and Tobago, Uganda, Cyprus, and several other countries, which base their wiring regulations on BS 7671.
Compilation and publication[edit]
The standard is maintained by the Joint IET/BSI Technical Committee JPEL/64, the UK National Committee for Wiring Regulations, and published by the IET (formerly IEE). Although the IET and BSI are non-governmental organisations and the Wiring Regulations are non-statutory, they are referenced in several UK statutory instruments, and in most cases, for practical purposes, have legal force as the appropriate method of electric wiring.[5]
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The BSI (British Standards Institute) publishes numerous titles concerning acceptable standards of design/safety/quality across different fields.
History of BS 7671 and predecessor standards[edit]
The first edition was published in 1882 as the 'Rules and Regulations for the Prevention of Fire Risks arising from Electric Lighting.' The title became 'General Rules recommended for Wiring for the Supply of Electrical Energy' with the third edition in 1897, 'Wiring Rules' with the fifth edition of 1907, and settled at 'Regulations for the Electrical Equipment of Buildings' with the eighth edition in 1924.
Since the 15th edition (1981), these regulations have closely followed the corresponding international standard IEC 60364. In 1992, the IEE Wiring Regulations became British Standard BS 7671 so that the legal enforcement of their requirements was easier both with regard to the Electricity at Work regulations and from an international point of view.[6] They are now treated similar to other British Standards. BS 7671 has converged towards (and is largely based on) the European Committee for Electrotechnical Standardization (CENELEC) harmonisation documents, and therefore is technically very similar to the current wiring regulations of other European countries.
1st Edition[edit]
'Rules and Regulations for the Prevention of Fire Risks arising from Electric Lighting.' - Two core cable, line and neutral, no earth. The protection was a re-wirable fuse.
17th Edition[edit]
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The 17th edition, released in January 2008 and amended in 2011 ('Amendment 1'), 2013 ('Amendment 2') and January 2015 ('Amendment 3') became effective for all installations designed after 1 July 2008.[7] One of the more significant changes is (chapter 41) that 30 mA RCDs 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 and its amendments incorporated new sections relating to microgeneration and solar photovoltaic systems, non-combustible consumer units, RCDs, and breakers (including high resilience breaker layout).
- As originally published highlights - RCDs required for most outlets
- Amendment 1 highlights - high resilience consumer units
- Amendment 2 highlights - electric vehicle charging added, earlier change incorporated for medical locations[8]
- Amendment 3 highlights - non-combustible consumer units/enclosures[3]
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Timeline[edit]
| Date | Edition / change | Information |
|---|---|---|
| 1882 | 1st Edition | Titled ‘Rules and Regulations for the prevention of Fire Risks Arising from Electric Lighting', and known as the 'Wiring Rules' |
| 1888 | 2nd Edition | Titled 'Wiring Rules & Regulations in Buildings |
| 1897 | 3rd Edition | Titled ‘General Rules recommended for Wiring for the Supply of Electrical Energy' |
| 1903 | 4th Edition | issued as IEE Wiring Regulations, called ‘Wiring Rules' |
| 1907 | 5th Edition | Issued as IEE Wiring Regulations |
| 1911 | 6th Edition | Issued as IEE Wiring Regulations |
| 1916 | 7th Edition | Issued as IEE Wiring Regulations |
| 1924 | 8th Edition | Issued as IEE Wiring Regulations ‘Regulations for the Electrical Equipment of Buildings' |
| 1927 | 9th Edition | Issued as IEE Wiring Regulations |
| 1934 | 10th Edition | Issued as IEE Wiring Regulations 3 phase colours red, white and green, neutral or earth black. |
| 1939 | 11th Edition | Issued as IEE Wiring Regulations. Revised in 1943, reprint with minor amendments in 1945, supplement in 1946, further revised in 1948 last edition to allow sockets in a bathroom. 3 phase colours red, white and blue, Black for neutral or earth. |
| 1950 | 12th Edition | Issued as IEE Wiring Regulations. Supplement issued 1954 First mention of PVC insulated cables. 3 phase colours red white and blue, Black for neutral or earth in fixed wiring. Green earth in flex. |
| 1955 | 13th Edition | Issued as IEE Wiring Regulations. Reprinted in 1958, 1961, 1962, 1964 |
| 1966 | 14th Edition | Issued as IEE Wiring Regulations. (adds earthing on lighting circuits) Reprinted in 1968, 1969, 1969 again (metric units[verification needed]), 1970 (in metric units), 1972, 1973, 1974, 1976 |
| 1981 | 15th Edition | Issued as IEE Wiring Regulations. (Possibly reprinted 1983, 1984, 1986 amendment to remove volltage operated earth leakage circuit breakers), 1987, 1988?[verification needed]) |
| 1991 | 16th Edition | Issued as IEE Wiring Regulations. Reprinted with amendments 1992, 1994, 1997, 2000, 2001, 2004 |
| 1992 | BSI adopts as a standard | Wiring Regulations adopted by the British Standards Institute as BS 7671 |
| 1992 | Legislation | Electricity at Work Regulations come fully into effect in Northern Ireland |
| 2004 | Incorporated into building regulations | Part P of the Building Regulations ('Requirements for Electrical Installations') comes into force, covering legal requirements for UK electrical installations. The guidance in the Approved Documents refers to BS 7671 as being one way to achieve compliance. The version in force when the law came into effect was the 16th edition, BS 7671:2001, as amended in 2002 and 2004 Amendment 2 (change of phase colours) . |
| 2008 | 17th Edition | Amended 2015 ('Amendment no. 3') metal consumer units. |
| 2018 | 18th Edition | Introduced energy efficiency performance levels and the use of surge protection devices and arc fault detection devices.[9] Amended Feb 2020 ('Amendment no. 1') Changes to rules on car charging. - Current standard as of February 2020 |
British Standard 7671 Free Download
See also[edit]
References[edit]
Bs 7671 Pdf Free Download
- ^BS7671 chapter 11 - scope
- ^BS7671: Preface
- ^ ab'IET launches Amendment to Wiring Regulations'. www.theiet.org. The IET. Retrieved 1 March 2018.
- ^http://www.theiet.org/media/press-releases/press-releases-2020/3-february-2020-iet-bsi-publish-amendment-1-to-bs-76712018-iet-wiring-regulations
- ^'Regulatory Requirements'(PDF). p. 3.
- ^Electrician's guide to the 17th edition of the IEE wiring regulations. 3rd edition pub 2012 John Whitfield
- ^Geoff Cronshaw: The 17th edition: a brief overviewArchived 3 September 2014 at the Wayback Machine. IEE Wiring Matters, Summer 2007.
- ^'IET launches Amendment 3 to BS 7671:2008'. Voltimum UK. Retrieved 1 March 2018.
- ^Whitton, Nicole (2016). 'BS 7671: the 18th Edition report'. electrical.theiet.org. IET Electrical. Retrieved 8 February 2018.
External links[edit]
British Standard 7671 Free Download Pdf
