with refrance to the law bit I was trying to make it simple the heath and safety at work act Is where you will find a refrance to it and if it can be moved it must be tested and yes it includes every thing if you do it in rental home you also have to test washing machines fridges freezers etc etc. It covers everything that is connected to a ring main and does not have it own fused circuit basically everything with a plug on This includes ups servers switches etc etc
tanken from book
What is Portable Appliance Testing?
The 'Inspection and Testing of In-Service Electrical equipment' (usually referred to as Portable appliance testing or PAT), was introduced to enable companies & organisations comply with the Electricity at Work Regulations. To meet these regulations it is necessary to have in place a program of inspection and electrical safety testing of portable appliances. Other legislation of specific relevance to electrical maintenance - The Health & Safety at Work Act 1974, the Management of Health & Safety at Work Regulations 1999, the Workplace (Health, Safety and Welfare) Regulations 1992, and the Provision and Use of Work Equipment Regulations 1998.
What electrical equipment needs to be tested?
The regulations cover all items of in-service electrical equipment, this includes all movable items connected to the mains supply by 13A BS1363 plugs, BS EN60309-2 industrial plugs or hard wired via a fused connection unit. In addition to being responsible for the safety of their own portable appliances, companies are are also responsible for the safety of electrical equipment brought on site by employees and contractors.
so it includes some stuff without plugs.
But also it is a very gray area as IET says one thing and the HSA says another (Made a phone call today with reference to this just to make sure and was told there is no law as such people just like to cover themselves if it goes wrong and was not tested and a union classes it as pat the pat tester of that is then at fault ?? take it as you will Me i test every plug.
you are right offices are not every year but schools are ?? this is the same as in my pat book code of pratice