What to Expect from PAT Testing: All You Need to Know

When it comes to electrical safety in the workplace, Portable Appliance Testing (PAT) is one of the mandatory tests that need to be carried out. It is an assessment of the electrical appliances, systems, and equipment used in the workplace for any damage, deterioration, or defect that could lead to electrical shock or fire. This test will determine whether the appliance is safe to use, or it should be taken out of service. In this blog, we will dive in what to expect from PAT testing, how often to carry it out, and what appliances require testing.

What is PAT Testing?

PAT testing is the assessment of electrical equipment to check if it is safe to use. The test involves inspecting the appliance for any damage, defects, wear and tear, and any other potential hazards that could pose a threat. The testing is carried out by certified electricians, who will inspect the appliance visually and use specialized equipment such as a PAT tester to check the electrical integrity of the appliance.

How Often Should You Carry Out PAT Testing?

The frequency of PAT testing will depend on the type of electrical equipment and the environment it is used in. For instance, appliances used frequently, such as kettles, microwaves, and computers, require more frequent testing than those used infrequently, such as a printer. The level of risk associated with each appliance is also a factor in determining the frequency of testing. As a general rule, it is recommended to carry out PAT testing between every six months and two years.

What Appliances Require PAT Testing?

All electrical appliances that are used in the workplace require PAT testing. This includes all portable equipment, such as computers, printers, kettles, and extension leads. Appliances that are built-in, such as air conditioning units, should also be tested. As mentioned earlier, the frequency of testing will depend on the type of equipment and the environment it is used in.

What Happens During PAT Testing?

PAT testing consists of two parts: a visual inspection of the appliance, and electrical testing using a PAT tester. The visual inspection involves checking the appliance for any damage, defects, or signs of wear and tear. The electrical testing aims to check the earthing, insulation, and polarity of the appliance. This is done by connecting the appliance to a PAT tester and conducting a series of tests to determine whether it is safe to use or not.

What Are the Benefits of PAT Testing?

PAT testing is essential in ensuring the safety of electrical equipment in the workplace. It helps to reduce the risk of electrical shock and fire, which can cause harm to employees, damage equipment, and even lead to legal action. PAT testing also ensures that the company complies with the relevant regulations and standards to avoid the risk of prosecution or being fined.


PAT testing is an essential measure in ensuring the safety of electrical equipment in the workplace. It helps to reduce the risk of electrical failure and ensure the safety of employees. PAT testing should be carried out regularly, and the frequency will depend on the environment, type of equipment, and level of risk. In summary, organizations should take PAT testing seriously, and ensure that their equipment is adequately inspected and tested to prevent any potential risks.