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IET Code of Practice: Inspection & Testing of Electrical Equipment- 5th Ed

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The fifth edition of the IET Code of Practice for In-Service Inspection & Testing of Electrical Equipment (published 2020) includes updated regulations, advice and guidance pertaining to the inspection and testing of in-service electrical equipment with the view to ascertaining whether it is fit for continued use.

The fifth edition of the IET Code of Practice for In-Service Inspection & Testing of Electrical Equipment has been revised in regards to the following:

  • Electrical equipment maintenance requirements
  • Acceptable test result limits
  • Hierarchy of tests
  • Testing frequencies and intervals
  • Demarcation between equipment connected to a fixed electrical installation and the installation itself
  • Guidance and emphasis on user checks
  • Advice on the types of checks available to duty-holders

Please see the table below for a more detailed overview of the changes made to the 5th Edition. 

Changes from Edition 4 to Edition 5
1.)  No recommended test period anymore
2.) Every class of equipment has to have a document Risk Assessment by the Duty Holder which sets out the period of testing
3.) All equipment will have an insulation resistance; the leakage test is now an additional test
4.) Leakage test is 5 milliamps for all equipment (class 1 or class 2)
5.) New class of equipment class 2 PE
6.)

All types of equipment have changed to: 

  • Mobile
  • Stationary          
  • Fixed equipment
  • Handheld Equipment
  • Built-in appliances/equipment
  • IT equipment
  • Extension Leads
  • Electric Heating Equipment
  • Electrical Installations in office furniture and similar
7.) No reference to Portable Appliance Testing 
8.) New legal documents to refer to
9.) Fuse ratings have changed
10.) Different standard marks on the fuses themselves
11.) Rack-mounted equipment (server rooms) has been introduced
12.) New symbol for Class 2 PE
13.) Class 3 equipment has a visual, although not tested

 

Like previous editions, this publication also emphasises the following:

  • Duty-holders should test equipment with regard to the risks it is exposed to, the environment, and the user’s skill level
  • The importance of establishing and conducting safety checks in compliance with current working practices and legal requirements

The IET Code of Practice for In-Service Inspection & Testing of Electrical Equipment – 5th Edition provides comprehensive, up-to-date guidance on how to achieve high standards of electrical safety. The practices and requirements detailed in this book are due to come into effect from October 2020.

IET Code of Practice: Inspection & Testing of Electrical Equipment- 5th Ed Key Features

  • Details regulations, advice and guidance pertaining to the inspection and testing of in-service electrical equipment with a view to determining whether it is fit for continued use
  • Updated for 2020
  • Electrical equipment maintenance requirements (updated)
  • Acceptable test result limits (updated)
  • Hierarchy of tests (updated)
  • Testing frequencies and intervals (updated)
  • Demarcation between equipment connected to a fixed electrical installation and the installation itself (updated)
  • Guidance and emphasis on user checks (updated)
  • Advice on the types of checks available to duty-holders (updated)
  • Reiterates that equipment should be tested with regard to the risks it is exposed to, the environment, and the user’s skill-level
  • Emphasises the importance of establishing and conducting safety checks in compliance with current working practices and legal requirements
  • Provides comprehensive, up-to-date guidance on how to achieve high standards of electrical safety
  • These updated practices and requirements are due to come into effect from October 2020

What’s Included?

  • IET Code of Practice: Inspection & Testing of Electrical Equipment- 5th Ed

Publication Details 

Item Subjects Electrical Regulations
Publication Year 2020
Pages 160
ISBN-13 978-1-78561-966-3
Format Paperback
Part CodePWR02350
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