The Electrician’s Guide to Fire Detection and Fire Alarms is one of a number of publications prepared by the IET to provide guidance on electrical installations in buildings. This publication is concerned with fire detection and fire alarm systems and must be read in conjunction with the legislation, approved document B and the British Standards, in particular BS 5839-1 and 5839-6. Guidance on the requirements for Scotland is given in chapter 8 prepared with the assistance of the Scottish building standards agency.