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Practical Guide to Inspection, Testing and Certification of Electrical Installations
Do you need to inspect, test and certify the electrical work you carry out? * Are you unsure what Part P and other legislation require you to inspect and test and how to do it? If you have answered yes to either of these questions, this is the book you have been looking for. It covers all the basics of inspection and testing and illustrates step-by-step
and in full colour how to carry out the different tests. Examples show how to verify recorded test results and how to certify and fill in the required forms. It also addresses problems encountered on the job and how to avoid and solve them. This book covers all the theory required for passing the City & Guilds Level 3 Certificate in Inspection, Testing, Design and Certification of Electrical Installations (2391) and includes sample questions and scenarios as encountered in the exams. Further questions encourage readers to research answers in the On-Site Guide, as required in the exams for Part P Competent Person courses from EAL, NICEIC, NAPIT and others. Model answers for all questions are also provided. The book will also help prepare students on City & Guilds 2330 Level 3 courses, NVQs and apprenticeship programmes for their practical inspection and testing exams. With its focus on the practical side of the actual inspection and testing rather than just the requirements of the regulations, this book is ideal for both experienced electricians and those working in allied industries, such as plumbers and heating specialists, kitchen and bathroom fitters, alarm installers and others, whether they are working on domestic or industrial installations. Chris Kitcher is an Electrical Installation lecturer at Central Sussex College and has 45 years of experience in the electrical industry.
CONTENTS:
1 Statutory and non statutory regulations 2 Break down of electricity at work regulations 3 Requirements and compliance with part P for domestic installers 4 Status of inspector, explanation of titles, competent and duty holder, Roles and responsibilities 5 Why inspect and test electrical installations 6 Electric Shock 7 Types of supply systems and earthing arrangements 8 Types of certificates, Electrical installation, Minor works, and Periodic test report. (and where to use them) 9 Explanation of each certificate 10 Explanation of schedule of inspection forms and test result forms 11 Prospective short circuit current, Earth fault current and Prospective fault current. (measurement or calculation) 12 Information required prior to inspection and test 13 Visual inspection 14 What to look for on initial inspection 15 What to look for if periodic inspection and test report required 16 Instruments 17 How to Test, with reasons, various methods, and instruments to be used i. Main equipotential bonding ii. Supplementary bonding iii. Continuity of CPCs iv. Ring Final circuit test v. Insulation resistance test vi. Dead Polarity vii. Live polarity viii. External Earth fault loop impedance Ze Option 1 Calculation. Option 2 Rule of thumb ix. Earth Electrode Ze x. Earth Fault Loop Zs xi. Prospective short circuit test single and three phase xii. Residual current device xiii. Functional testing 18 Interpretation and recording of results 19 Protective devices and disconnection times 20 Overcurrent or Overload 21 Correct use of protective devices 22 Supplementary bonding 23 Conductive parts or not 24 Direct and indirect contact and common types of protection 25 IP Codes 26 Safe Isolation 27 Special locations, agricultural, construction, etc 28 Useful info Earth Clamps, Kitchen sink bonding, R.C.D on showers, External socket outlets Basics: Current, Voltage, and Resistance.
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