IET Code of Practice for In-service Inspection and Testing of Electrical Equipment 5th Edition: ISBN 978-1-78561-966-3.

 This IET “Code of Practice for In-service Inspection and Testing of Electrical Equipment (5th Edition)” has been revised to reflect current best practice. It gives guidance to those responsible for the inspection, testing and maintenance of electrical appliances. The text specifies the frequency and scope of inspections and testing in different environments. The new revision is printed in colour and includes many drawings aimed at helping to identify common problems.