PAT Testing is short for Portable Appliance Testing and is also known as Electrical Equipment Testing. 

It is part of the regimen of electrical tests that landlords, letting agents and business owners have carried out on a regular basis to ensure their properties are electrically safe. 

PAT testing involves the visual inspection and testing of all the appliances that you supply in a property that can either be plugged in to or operated at a socket. These include kettles, microwaves, fridges, washing machines and heaters.