BS 7671:2008 is the 17th edition of the British Standard for electrical installations. This document contains an introduction to the standard, a table of contents, and summaries of the chapters.
This document introduces the BS 7671:2008 Requirements for Electrical Installations and outlines the major changes from the previous edition. It details the scope, fundamental principles, definitions, and assessment of general characteristics for electrical installations.
The guide also covers protection measures, selection and erection of wiring systems, inspection and testing procedures, and special installations such as bathrooms, swimming pools, caravans, and solar photovoltaic systems. Appendices provide additional tables and methods for calculations and testing.
BS 7671:2008 was issued on 1 January 2008 and installations designed after 30 June 2008 must comply with it.
Each circuit in a special location must have 30 mA RCD protection.
The document is published under the direction of the Institution of Engineering and Technology (IET) and the British Standards Institution (BSI).