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IET Code of Practice for In-Service Inspection and Testing (4th Ed.)

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An essential purchase for anyone involved with PAT testing, the IET Code of Practice is the industry-recognised book for testing electrical equipment, including portable appliances.

The 4th edition of the IET Code of Practice includes a number of revised sections based upon the findings of the Lofstedt report, with a greater focus on risk assessment and clarifying the requirements placed upon duty holders and those testing electrical equipment. If you own an older version of this book it is strongly recommended that you buy the new version to keep ahead of all changes.

This book strongly focuses on how to maintain electrical equipment, using correct documentation, understanding what inspection/testing involves and comprehensive information on carrying out in-service inspection and testing of electrical equipment (PAT).

City and Guild's industry-standard 2377 PAT testing course is based upon the IET Code of Practice, so this book is an ideal purchase for use before, during and after PAT testing training.

Table of Contents

This book includes the following sections:

Part 1: Administration of Inspection and Testing

1: Scope

  • 1.1: Users of electrical equipment, persons managing a maintenance scheme, persons performing inspections and tests, and other duty-holders
  • 1.1.1: Users of electrical equipment
  • 1.1.2: Persons managing a maintenance scheme (duty-holders)
  • 1.1.3: Persons undertaking the practical inspection and testing of electrical equipment
  • 1.1.4 Other duty-holders such as landlords, company directors, managers and building services managers etc.
  • 1.2: Equipment
  • 1.2.1: Medical electrical equipment
  • 1.3: Premises
  • 1.4: Voltages and phases
  • 1.5: Summary of the objectives of this Code of Practice

2: Definitions

3: The law

  • 3.1: The legislation
  • 3.1.1: The Health and Safety at Work etc. Act 1974
  • 3.1.2: The Management of Health and Safety at Work Regulations 1999
  • 3.1.3: The Provision and Use of Work Equipment Regulations 1998
  • 3.1.4: The Electricity at Work Regulations 1989
  • 3.1.5: Workplace (Health, Safety and Welfare) Regulations 1992
  • 3.1.6: The Housing Act 2004 (England and Wales)
  • 3.1.7: The Housing (Scotland) Act 2006
  • 3.1.8: The Electrical Equipment (Safety) Regulations 1994
  • 3.1.9: Waste Electronic and Electrical Equipment Regulations 2006 (WEEE directive)
  • 3.2: Scope of the legislation
  • 3.3: Who is responsible?
  • 3.4: Maintenance

4: Fixed electrical installation

  • 4.1: Means of earthing
  • 4.2: RCD protection
  • 4.3: Sufficient socket-outlets should be provided
  • 4.4: Damaged accessories
  • 4.5: Specialized installations

5: Types of electrical equipment

  • 5.1: Portable appliances or equipment
  • 5.2: Movable appliances or equipment (sometimes called transportable)
  • 5.3: Hand-held appliances or equipment
  • 5.4: Stationary appliances or equipment
  • 5.5: Fixed equipment or appliances
  • 5.5.1: Inspection and testing of fixed equipment or appliances
  • 5.6: Appliances or equipment for building-in
  • 5.7: Information technology equipment
  • 5.8: Extension leads and RCD extension leads
  • 5.9: Multiway adaptors and RCD adaptors
  • 5.10: Surge protective devices


6: The electrical tests

  • 6.1: Testing throughout the life of equipment
  • 6.2: Manufacturer’s type testing
  • 6.3: Manufacturer’s production testing
  • 6.4: In-service inspection and testing
  • 6.5: Testing after repair

7: In-service inspection and testing

  • 7.1: Inspection
  • 7.1.1: Risk-based assessments
  • 7.2: Categories of inspection and testing
  • 7.3: Frequency of inspection and testing through risk-based assessments
  • 7.4: Review of frequency of inspection and testing

8: Procedures for in-service inspection and testing

  • 8.1: The basic requirement
  • 8.2: Test equipment
  • 8.3: Documentation
  • 8.4: Labelling
  • 8.5: Damaged or faulty equipment
  • 8.6: User responsibilities
  • 8.7: Availability of records

9: Training

  • 9.1: Requirements and responsibilities
  • 9.2: The user
  • 9.3: The duty-holder or manager
  • 9.4: The inspector
  • 9.5: The test operative
  • 9.5.1: Training
  • 9.5.2: Experience
  • 9.6 The person repairing faulty equipment

10: Test instruments

  • 10.1: Safety of test equipment
  • 10.1.1: Test instruments
  • 10.1.2: Test probes and leads
  • 10.1.3: Test probes and leads for use in conjunction with a voltmeter, multimeter, electrician’s test lamp or voltage indicator
  • 10.2: Portable appliance test instruments
  • 10.2.1: Three-phase equipment
  • 10.3: Low resistance ohmmeters (for earth continuity testing)
  • 10.4: Insulation resistance ohmmeters (applied voltage method)
  • 10.5: Instrument accuracy

Part 2 Inspection and Testing (including user checks)

11: Equipment construction types

  • 11.1: Class I
  • 11.1.1: Class I typical construction showing basic insulation and earthed metal
  • 11.1.2: Class I construction showing the use of air as a basic insulation medium
  • 11.1.3: Class I construction incorporating unearthed metal separated from live parts by basic and supplementary insulation
  • 11.1.4: Class I construction incorporating unearthed metal separated from live parts by basic insulation and earthed metal
  • 11.2: Class II
  • 11.2.1: Class II equipment with a substantial enclosure of insulating material comprising basic and supplementary insulation
  • 11.2.2: Class II equipment with a substantial enclosure of reinforced insulating material
  • 11.2.3: Class II equipment with a substantial enclosure of insulating material – the insulation construction includes air
  • 11.2.4: Class II equipment with unearthed metal in the enclosure, separated from live parts by basic and supplementary insulation
  • 11.2.5: Class II equipment with unearthed metal separated from live parts by reinforced insulation
  • 11.2.6: Class II equipment with unearthed metal separated from live parts by basic and supplementary insulation including air gaps
  • 11.2.7: Metal-encased Class II equipment
  • 11.3: Class III
  • 11.4: Class 0 and 0I
  • 11.4.1: Class 0 equipment
  • 11.4.2: Class 0I equipment

12: Types of inspection and testing

13: The user check

14: The formal visual inspection

  • 14.1: Manufacturer’s instructions
  • 14.2: Suitability of the equipment for the environment
  • 14.3: Switching of equipment
  • 14.3.1: Functional switching
  • 14.3.2: Isolation and switching off for mechanical maintenance
  • 14.3.3: Emergency switching
  • 14.4: User feedback
  • 14.5: The equipment
  • 14.6: Equipment failing the formal visual inspection
  • 14.7: Recording the formal visual inspection

15: Combined inspection and testing

  • 15.1: Preliminary inspection
  • 15.2: Test procedures
  • 15.3: In-service tests
  • 15.4: The earth continuity test
  • 15.5: The insulation resistance test
  • 15.6: Protective conductor/touch current measurement
  • 15.7: Functional checks
  • 15.8: Damaged or faulty equipment
  • 15.9: Appliance lead sets
  • 15.10: Extension leads, multiway adaptors and RCD adaptors
  • 15.10.1: Extension leads
  • 15.10.2: RCD extension leads
  • 15.10.3: Multiway adaptors and RCD adaptors
  • 15.11: High protective conductor current
  • 15.12: Replacement of appliance flexes
  • 15.13: Plug fuses
  • 15.14: Equipment that cannot be located

16: New and third party equipment

  • 16.1: New equipment and appliances
  • 16.2: Second-hand equipment and appliances
  • 16.3: Hired equipment

Part 3: Appendices

I: British Standards

II: Legal references and notes

  • II.1: Health and Safety at Work etc. Act 1974
  • II.2: The Electricity at Work Regulations 1989
  • II.3: Management of Health and Safety at Work Regulations 1999
  • II.4: Provision and Use of Work Equipment Regulations 1998
  • II.4.1: General
  • II.4.2: Maintenance
  • II.4.3: Inspection of work equipment that poses electrical risks
  • II.4.4: Specific risks
  • II.4.5: Information and instructions
  • II.4.6: Training
  • II.4.7: Isolation from sources of energy
  • II.4.8: Maintenance operations

III: The Electricity at Work Regulations

  • III.1: Regulation 4: Systems, work activities and protective equipment
  • III.1.1: Regulation 4(2)
  • III.1.2: Regulation 4(3)
  • III.2: Regulation 5: Strength and capability of electrical equipment
  • III.3: Regulation 6: Adverse or hazardous environments
  • III.4: Regulation 7: Insulation, protection and placing of conductors
  • III.5: Regulation 8: Earthing or other suitable precautions
  • III.6: Regulation 10: Connections
  • III.7: Regulation 12: Means of cutting off the supply and for isolation
  • III.8: Regulation 13: Precautions for work on equipment made dead
  • III.9: Regulation 14: Work on or near live conductors
  • III.10: Regulation 15: Working space, access and lighting
  • III.11: Regulation 16: Persons to be competent to prevent danger and injury
  • III.11.1: ‘... prevent danger or, where appropriate, injury ...’
  • III.11.2: Technical knowledge or experience
  • III.11.3: Allocation of responsibilities
  • III.11.4: Supervision

IV: Summary of legislation and guidance

V: Model forms for in-service inspection and testing

  • Form V.1 Equipment register
  • Form V.2 Equipment formal visual and combined inspection and test record
  • Form V.3 Equipment labels
  • Form V.4 Repair register
  • Form V.5 Faulty equipment register
  • Form V.6 Test instrument record

VI: Resistance of flexible cables

VII: Checks to be made on a plug, a cable and an extension lead

VIII: Guide to isolation procedures

Index

Part CodePWR02340
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