This is the 5th edition of the IET's Code of Practice for In-service Inspection and Testing of Electrical Equipment.

This Code of Practice provides guidance on in-service inspection and testing to determine whether electrical equipment is safe for continued use. Duty-holders are required by law to consider the risks associated with the use of electrical equipment.

The Code underpins the need to conduct inspection and testing of electrical equipment by considering the risks the equipment is exposed to and the environment it is used in, in addition to the skill level of the user. It applies to all workplaces and also some types of rented accommodation.

Written to include changes to the BS 5266-1:2016 Code of Practice for Emergency Lighting.

Written to include the relevant information from IET’s 18th Edition, BS 7671:2018 regulations, IET’s 18th Edition, BS 7671:2018 regulations came into effect on the 1st January 2019.