iet wiring regulations 18th edition book

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. History of BS 7671 and predecessor standards The BSI ( British Standards Institute) publishes numerous titles concerning acceptable standards of design/safety/quality across different fields. 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. 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). BS 7671 is also used as a national standard by Mauritius, St Lucia, Saint Vincent and the Grenadines, Sierra Leone, Singapore, Sri Lanka, Trinidad and Tobago, Uganda, Cyprus, and several other countries, which base their wiring regulations on BS 7671. Amendment 2 to the 18th Edition was published in March 2022. The current version is BS 7671:2018 (the 18th Edition) issued in 2018 and came into effect from 1 January 2019.

The standard takes account of the technical substance of agreements reached in CENELEC. It did not become a recognized British Standard until the publication of the 16th edition in 1992. The frequencies covered for AC are 50 Hz, 60 Hz, and 400 Hz, used in the UK for houses, offices, and commerce.

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).

In general, BS 7671 applies to circuits supplied at nominal voltages (Uo) up to and including 1000 volts AC or 1500 volts DC. IET Wiring Regulations', informally called in the UK 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 British Standard BS 7671 'Requirements for Electrical Installations.

Iet wiring regulations 18th edition book