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NAPIT Guide to Initial Verification and Periodic Inspection and Testing of Electrical Installations Edition 2021 (PDF)

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About

Pages: 306 pages
Size: 137 MB
Publisher: NAPIT
Author (s): Richard Townsend, Paul Chaffers
Language: English
Publication: 2021

This new Guide will be a turning point for the information available to electrical installation Inspectors and Testers,especially those looking for a definitive point of reference during their everyday work.
i t clearly establishes what is expected and what needs to be done to produce an effective and efficient Electrical Installation Certificate or Report.

As the leading Registration Electrical Inspector Scheme (EIS) for electrical Inspectors and Testers,we feel that there is no other publication available that provides the same level of hands on approach to guidance in this area.

Contents

Preface....................................................................................................8
Foreword................................................................................................ 9
About the Authors...................................................................................10
Introduction ............................................................................................12
Section 1 Legal Requirements ...............................................................13
1J The Health and Safety at Work Act etc. 1974 (HASWA) ................15
1.2 The Electricity at Work Regulations 1989 (EAWR)........................15
1.3 The Construction (Design and Management) Regulations 2015.................................... 18
1A The Electricity Safety, Quality and Continuity Regulations (ESQCR)...................................................................19
1.5 The Provision and Use of Work Equipment Regulations 1998 (PUWER)..........................................................19
1.6 Personal Protective Equipment (PPE) 2002 and The PersonalProtective Equipment at Work Regulations 1992......................................................................... 21
1.7 Building Regulations................................................................23
1.7.1 The Building Act 1984...........................................................23
1.7.2 The Building Regulations 2010 (England and Wales)........... 23
1.7.3 Approved Document A - Structure........................................ 25
1.7.4 Approved Document B Volume 1: Fire safety (Dwellings)......26
1.7.5 Approved Document C - Site preparation and resistance to contaminantsand moisture...................................................... 32
1.7.6 Approved Document E - Resistance to the passage of sound............................................................................... 33
111 Approved Document F -Ventilation........................................ 33
1.7.8 Approved Document L1A Conservation of fuel and power in new dwellings................................................................ 35
1.7.9 Approved Document LI B Conservation of fuel and power in existing dwellings.......................................................... 37
1.7.10 Approved Document M - Access to and use of buildings ............ 37
1.7.11 Approved Document P - Electrical safety..................................... 40
1.7.12 The Building (Scotland) Regulations 2004...................................41
Section 2 BS7671:2018+A1(2020) Requirements for Electrical Installations............43
2.1 BSEN 61557 Electrical safety in low voltage distribution up to 1000 V AC.and 1500 VDC Equipment for testing,
or monitoring of protective measures.......................... 46
2.2 HSE Guidance Note: GS38 Electrical test equipment for use on low voltage electrical systems
Section 3 Identification of distribution equipment and installation components.............49
3.1 Consumer unit designs....................................................................56
3.2 Protective Earthing.......................................................................... 77
3.3 Automatic disconnection of supply (ADS)....................................... 83
3.4 Protection by SELV, PELV or Electrical Separation .......................... 87
Section 4 Safe Isolation of Electrical Supplies........................................ 89
4.1 Legislation and Regulations............................................................. 91
4.2 Hidden dangers ............................................................................... 92
4.3 Isolating a complete installation ..................................................... 94
4.4 Safe isolation procedure.................................................................. 97
4.6 Isolation of larger installation  ........................................................ 102
Section 5 Test instruments....................................................................107
5.1 Voltage tester..................................................................................109
5.1.1 Voltage tester confirmation check box (proving unit)................... 112
5.2 Low resistance ohmmeter/lnsulation resistance meter....................113
5.2.1 Conductor resistance (Low resistance ohmmeter)...................... 113
5.2.2 Conductor continuity (Low resistance ohmmeter)........................ 114
5.2.3 Insulation resistance (Low resistance ohmmeter).........................115
5.2.3 Earth fault loop impedance (EFL1) tester......................................116
5.4 Prospective Fault Current (lpf) tester ...............................................119
5.5 RCD tester ......................................................................................121
5.6 Phase sequence indicators...............................................................124
5.7 Earth electrode resistance tester.......................................................125
5.8 Single-function test instruments, multi-function test instruments(MFTs) and multi-meters...126
5.9 Thermal evaluation equipment......................................................... 128
5.10 Calibration...................................................................................... 131
5.10.1 Frequency of checks................................................................... 133
5.10.2 Calibration records...................................................................... 134
Section 6 Standard Tests ...................................................................... 135
6.1 Safety.............................................................................................. 137
6.2 Sequence of Tests........................................................................... 137
6.3 Continuity of conductors .................................................................138
6.4 Insulation resistance....................................................................... 153
6.5 Polarity ........................................................................................... 163
6.6 Earth electrode resistance test....................................................... 164
6.7 Earth fault loop impedance ............................................................ 168
6.8 Prospective fault current lpf............................................................. 173
6.9 Testing RCDs...................................................................................175
6.10 Phase sequence and phase rotation (polyphase installations or circuits)..........178
6.11 Functional tests............................................................................... 179
6.12 Arc Fault Detection Devices (AFDD)............................................... 180
6.13 Verification of voltage drop............................................................ 181
6.14 Test readings documentation......................................................... 183
Section 7 Initial Verification.................................................................... 189
7.1 Verification Process......................................................................... 191
7.2 Description of Initial Verification items............................................. 194
7.3 Electrical Installation Certificate (EIC)/Minor
Installation Works Certificate (MEIWC)................................................. 223
Section 8 Requirements for periodic inspection and testing................... 225
8.1 Inspection and testing requirements ............................................... 227
8.1.1 Extent and Limitations - Agreed & Operational ........................... 228
8.1.2 Sampling vs Quality..................................................................... 230
8.2 Inspection schedule breakdown...................................................... 231
8.2.1 Examples of items requiring inspection for an
Electrical Installation Condition Report (EICR) .......................................231
8.3 Testing..............................................................................................254
8.4 Report Codes and classifications.................................................... 254
8.4.1 (C1) - Danger present, immediate remedial action required Unacceptable condition)..........................................................................254
8.4.1.1 (C1) - Client/Duty holder notification ......................................... 255
8.4.2 (C2) - Potentially dangerous, urgent remedial action required .......256
8.4.3 (C3) - Improvement recommended .............................................. 257
8.4.4 (F1) - Further investigation required without delay......................... 258
8.4.5 Observations and Coding............................................................... 259
8,4.6 Remaining Observation Codes .....................................................259
8.5 Frequency of Inspection and/or Testing.............................................260
8.5.1 Previous/existing installation information....................................... 261
8.5.2 Client/Duty holders' responsibilities.............................................. 262
8.5.3 Maximum frequencies between inspections and any testing ........262
8.6 EICR completion and documentation............................................. 263
8.6.1 Overall summary ........................................................................ 263
8.6.1.1 Satisfactory.............................................................................. 263
8.6.1.2 Unsatisfactory........................................................................... 263
8.6.2 Completed documentation............................................................264
8.6.2.1 Notes for the person producing the report...................................273
8.6.2.2 Guidance for recipients...............................................................273
8.6.2.3 Guidance for the Inspector......................................................... 273
8.7 Remedial actions and documentation.............................................. 273
8.7.1 Remedial documentation............................................................... 274
Appendix 1 NAPIT Certificates and Reports............................................ 275
Electrical Installation Certificate (EIC).....................................................277
Minor Electrical Installation Works Certificate (MEIWC)......................... 284
Electrical Installation Condition Report (EICR)........................................ 292
Appendix 2 Verification, Inspection and Testing information sheets.........299
Safe Isolation Procedure Domestic.........................................................301
Safe Isolation Procedure Industrial/Commercial..................................... 302
Protective Device Max Zs Chart...............................................................303





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Reviews (1)
Fred
Fred
30/11/2021
Thank you so much. Great book!