BS 7671 is the British Standard for the electrical installation of buildings, commonly known as the “IET Wiring Regulations”. It is a set of guidelines and specifications for the design, installation, inspection, and testing of electrical systems in the United Kingdom. The standard is published by the Institution of Engineering and Technology (IET) and is updated every three years.
BS 7671 covers all aspects of electrical installation, including the selection and erection of equipment, the design and installation of wiring systems, and the inspection and testing of electrical installations. It also includes regulations for special installations or locations, such as swimming pools, gardens, and construction sites.
The standard is widely used by electricians, electrical engineers, and other professionals involved in the design and installation of electrical systems in the UK. It is also used as a reference for the assessment of compliance with national and international electrical safety standards.
The most recent edition of BS 7671 is the “IET Wiring Regulations Eighteenth Edition (BS 7671:2018+A1:2021)”, it includes the amendment 1 that was published in 2021. Compliance with BS 7671 is a legal requirement in the UK and failure to comply can result in legal action and fines.