PAT stands for Portable Appliance Testing – which is the term used to describe the inspection and testing of electrical appliances to ensure they’re safe to be used.
Most defects of the appliance can be found by a visual inspection from a competent person however internal defects can only be found by testing with a PAT test meter.
It is essential you understand that the visual inspection is an essential part of the PAT process because some faults cannot be found by testing alone.
A simple user check by the person using an appliance can be a very useful part of the appliance’s maintenance regime – it’s worth putting user checks in place in your company.
Additionally, a formal visual inspection and perhaps further PAT testing by a competent person may be required at appropriate intervals, dependent on the type of equipment and the environment it is being used in.