This 3rd edition is updated in line with the 18th edition of the wiring regulations. This book is an essential guide to the City & Guilds 2391-50 and 51, and also C&G 2391-52. There is a full coverage of technical and legal terminology used in theory exams, including the structure of exam questions and their interpretation.
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'Electrical Inspection, Testing and Certification - Drury, Michael (Electrical installation lecturer and an on-site constructor'.
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