Portable appliance testing is often abbreviated to PAT Testing. The correct term for the whole process is “In-service Inspection & Testing of Electrical Equipment” (as defined by IET/IEE and City and Guilds), the word portable is often misleading as the code of practice covers all electrical items connected to the electricity supply, often these items are not portable for example photocopiers, fridge freezers.
The Institution of Electrical Engineers published the “Code of Practice for In-service Inspection and Testing of Electrical Equipment”. This guide forms the best practice guide for portable appliance testing in the U.K and ensures the duty holder is meeting their requirements under the various health and safety acts.
The code of practice sets out a structured and rigours testing procedure which follows the steps below.