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

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The IET Code of Practice for In-Service Inspection & Testing of Electrical Equipment details advice on how to determine whether electrical equipment is fit for continued use, specifically in regard to conducting in-service inspections and tests. 

The fifth edition (published 2020) of the IET Code of Practice for In-Service Inspection & Testing of Electrical Equipment differs from previous editions with regards to the following:

  • Electrical equipment maintenance requirements
  • Acceptable test result limits
  • Hierarchy of tests
  • Testing frequency and intervals
  • The 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 FE
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 FE
13.) Class 3 equipment has a visual, although not tested

 

Additionally, like its predecessors, this publication reinforces the need for duty-holders to inspect and test equipment in line with the risks the equipment is exposed to, the environment in which it is used, and the user’s skill level. Similarly, the fifth edition of the IET Code of Practice for In-Service Inspection & Testing of Electrical Equipment also emphasises the importance of establishing and conducting safety checks that are compliant with current working practices and legal requirements.

The IET Code of Practice for In-Service Inspection & Testing of Electrical Equipment – 5th Edition provides guidance on how to achieve high standards of electrical safety.

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

  • Provides advice on determining whether electrical equipment is fit for continued use, specifically with regard to in-service inspections and testing
  • Electrical equipment maintenance requirements (updated)
  • Acceptable test result limits (updated)
  • Hierarchy of tests (updated)
  • Testing frequencies and intervals (updated)
  • The 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)
  • Reinforces that equipment should be inspected and tested according to the risks it is exposed to, the environment it is used in, and the user’s skill level
  • Emphasises the need to establish and conduct safety checks that are compliant with current working practices and legal requirements
  • Provides guidance on how to achieve high standards of electrical safety

What’s Included?

  • IET Code of Practice for In-Service Inspection & Testing of Electrical Equipment – 5th Edition

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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