As it is a legal requirement to maintain your appliances in check, PAT should be done on an approved schedule to ensure the maximum safety conditions of your portable electric equipment. PAT itself isn't required by law but is the best way to ensure compliance with various regulations such as:
● Health and Safety at Work;
● the safety at Work Act 1974;
● Regulations 1999,
● Electricity at Work Regulations 1989
The Health and Safety at Work act of 1974 put the responsibility of work safety to both employer and employee to ensure the safety of all personnel using a given work premise.