PAT Testing is the process by which electrical appliances are routinely checked to determine whether the equipment is in a safe condition and fit for continued use or if maintenance or a replacement is necessary.

The Health and Safety at Work etc. Act 1974 puts a duty of care upon both employer and employee to ensure the safety of all persons using the work premises.

The Provision and Use of Work Equipment Regulations 1998 require every employer to ensure that equipment is suitable for the use for which it is provided.

Depending upon the type of equipment and the environment that is it used within the recommendations for the frequency of inspection and testing do vary.