For technical certificate level 2 courses in Electrotechnology. Designed to provide a step-by-step guide to successful application of the electrical installation calculations required in everyday practice, this series has been an invaluable reference for both apprentices and professionals alike. Now fully updated to align with the 17th Edition IEE Wiring Regulations (BS 7671:2008), this edition meets the requirements of the new City & Guilds 2357 Diploma in Electrotechnology.