How often should it be done?
While testing is done on a regular basis the frequency of testing varies. PAT Tests Frequencies are recommendations only.
The frequency ranges from 3 months to 5 years, it based on the class of equipment and its working environment following a risk assessment, see frequency chart
The frequency ranges from 3 months to 5 years, it based on the class of equipment and its working environment following a risk assessment, see frequency chart