What Is PAT Testing?

PAT testing is an important testing process by which portable appliances are required to be checked for safety standards. The Health and Safety at Work Act of 1974 was the first legislation that required companies to have their electrical equipment tested on a regular basis. Health and safety regulations require that portable electrical appliances in the workplace operate in a safe manner that prevents any potential harm to employees. By law, all electrical systems must be properly inspected and tested for defects and safety. You can hire top PAt testing companies to check your electrical equipment.

The law allows companies to gauge their electrical appliances in-house, which allows for more flexibility during the process. However, many companies hire an external company that has employees qualified to perform PAT testing. All testers must have extensive knowledge of electrical systems and they must be officially qualified to perform PAT. Each tester must have a sufficient understanding related to the modes of electrical, thermal and mechanical damage that may result from damaged or poorly designed equipment. 

In-service testing involves a preliminary inspection, continuity tests, insulation testing and functional checks. In-service testing is performed to provide certainty that electrical appliances are currently in satisfactory condition. If an electrical appliance fails this test, it must either be repaired or replaced. If an electrical appliance was in unsatisfactory condition and has been repaired, tests must be performed to ensure that the repairs were sufficient to restore the appliance to satisfactory condition.