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The IET Code of Practice


IET Code of Practice

Price: £53.00

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The 5th edition (published 2020) of the IET Code of Practice for In-Service Inspection & Testing of Electrical Equipment details updated regulations, advice and guidance pertaining to checking whether in-service electrical equipment is fit for continued use.

Like the previous version, the 4th Edition, this book advises the following:

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

However, the 5th Edition of the IET Code of Practice for In-Service Inspection & Testing of Electrical Equipment has been updated with regards to the following:

  • Duty-holders should test equipment according to the risks it is exposed to, the environment it is used in, and the user’s skill level
  • 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 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

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

IET Code of Practice: Inspection & Testing of Electrical Equipment – 5th Ed Key Feature

  • Details updated regulations, advice and guidance pertaining to checking whether in-service electrical equipment is fit for continued use
  • Reiterates that duty-holders should test equipment according to the risks it is exposed to, the environment it is used in, and the user’s skill level
  • Emphasises the importance of establishing and conducting safety checks as per current working practices and legal requirements
  • 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)
  • Provides revised and comprehensive guidance on how to achieve high-standards of electrical safety
  • These updated regulations and practices come into effect from October 2020

What’s Included?

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