Electrical appliances can be portable (they unplug) or fixed (they don’t); chances are you’ll have a mix of both.
The vast majority of workplaces will have around 95% or higher, portable appliances.
Some appliances that used to be portable, will have had the plug removed and the appliance hard wired, for whatever reason, into the mains via a fused spur unit.
Some other hard wired appliances were never portable and were always intended to be hard wired.
It is important, when conducting your safety reviews, you don’t forget about the fixed appliances. These could be air conditioning units, refrigeration units, etc.
However, even though they are an ‘appliance’ it is very unlikely that it’ll be your PAT tester that should check them.
After all they are part of the mains electrical wiring system so should only be inspected by someone competent to work with mains electricity, such as an electrician or specialist service engineer.
Fixed Appliance Testing should be done as often as the risk requires, but this won’t be as often as the PAT test. To make things easier for you we inspect every fixed (previously portable) appliance we come across, and also check them for earth continuity.
Fixed appliance testing is a part of electrical equipment testing, but a full electrical PAT test on an appliance fixed to the mains installation should only be done by a competent person.