All the essential calculations required for basic electrical installation work The Electrical Installation Calculations series has proved an invaluable reference for over forty years, for both apprentices and professional electrical installation engineers alike. The book provides a step-by-step guide to the successful application of electrical installation calculations required in day-to-day electrical engineering practice. A step-by-step guide to everyday calculations used on the job An essential aid to the City & Guilds certificates at Levels 2 and 3 For apprentices and electrical installation engineers Now in its ninth edition, it is in line with the amendments to the 17th Edition IET Wiring Regulations (BS 7671:2008) and references the material covered in the Wiring Regulations throughout. The content also meets the requirements of the latest Level 2 qualifications from City & Guilds (including the new 2365 Diploma). Essential calculations which may not necessarily feature as part of the requirements of the syllabus are retained for professional electrical installation engineers based in industry and students wishing to progress to higher levels of study. Key terms are explained in a glossary section and worked examples and exercises are included throughout the text. A complete question and answer section is included at the back of the book to enable readers to check their understanding of the calculations presented.