This title presents an illustrated basic reference on electrical building services systems for construction clients and professionals. It covers power supplies and controls, fire detection and alarm systems, security systems, lighting systems, uninterruptible power supplies, structured cabling. The guide is intended to assist technical dialogue between the client and design team during the briefing process. It may also help clients to identify and raise technical questions that they feel are relevant to their organisation's specific needs. In addition, for construction professionals, the guide aims to provide a quick reference to electrical building services systems and can complement their working knowledge of the subject.