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Practical Guide to Inspection, Testing and Certification of Electrical Installations
Introduction
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| Practical Guide to Inspection, Testing and Certification of Electrical Installations |
Part P of the Building Regulations came into effect on the 1st of January 2005. This part of the Building Regulations requires that all electrical work carried out in domestic installations now has to be certificated. For work places, the Electricity at Work Regulations 1989 require that they provide a safe and well maintained electrical system. Certification and well kept records are a perfect way to confirm that every effort has been made to ensure that the system is, and remains safe.
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I have written this book to assist electricians of all levels in carrying out the inspecting, testing and certification of all types of electrical installations. It will also be invaluable to City and Guilds 2330 level 2 and 3 students, electricians studying for City and Guilds 2391 parts 101 and 102 and all tradesmen who are required to comply with Building Regulation part P. Step by step guidance and advice is given on how to carry out a detailed visual inspection during initial verifications, periodic inspections and certification.
Text and colour photographs of real, not simulated installations, are used to show the correct test instruments. Step by step instructions for how to carry out each test safely using different types of instruments are given along with an explanation as to why the tests are required. In some photographs safety signs have been omitted for clarity. All test leads are to GS 38 where required. Some comments within this book are my own view and have been included to add a common sense approach to inspecting and testing.
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Table Of Contents
1. Inspection and testing of electrical installations
Why inspect and test?
Section 1. Design, Installation, Inspection and Testing
Section 2. Extensions, Material alterations and material changes of use
Section 3. Information about other legislation
Compliance with Building Regulations Part P
Earthing and bonding to comply with Part P
Registered domestic installer
Unregistered competent person
DIY installer
2. Types of certification required for inspecting and testing of installations
Certification required for domestic installations (Part P)
Minor Electrical Installation Works Certificate
Part P, Domestic Electrical Installation Certificate
Periodic inspection, testing and reporting
Certification required for the inspecting and testing of installations other than domestic
Minor Electrical Installation Works Certificate
Electrical Installation Certificate
Initial verification inspection
Initial verification testing
Periodic inspection report
Periodic inspection
Three phase circuit/systems
Periodic testing
Voltage drop in conductors
3. Testing of electrical installations
Safe isolation
Testing for continuity of protective conductors
Ring final circuit test
Insulation resistance test
Testing of site applied insulation
Polarity tests
Earth electrode testing
Earth fault loop impedance Ze
Circuit earth fault loop impedance
Prospective fault current test
Functional testing
4. Completion of test certificates
Minor Electrical Installation Works Certificate
Electrical Installation Certificate
Schedule of Circuit Details and Test Results
Schedule of Items Inspected
Method of protection against electric shock
Cables and conductors
General
Periodic Inspection Report
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Practical Guide to Inspection, Testing and Certification of Electrical Installations
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