Why is it called PAT Testing?
The process of checking appliances is normally called ‘Portable Appliance Testing’ and is abbreviated to ‘PAT Testing’.
As you can probably see, this is actually incorrect – you are actually saying ‘Portable Appliance Testing testing!
If we used the phrase ‘PA testing’ then this would get confused with those who test ‘Public Address (PA) systems such as microphones, speakers and amplifiers.
Therefore, most people in the industry use the phrase PAT Testing as this is common use.