There is often a question that arises about how often should PAT testing be done UK. PAT testing varies depending on the environment and type of electrical equipment.

Schools and businesses have different types of electrical equipment, and that’s why PAT testing frequencies vary from setting to setting. In schools, PAT testing should be done every 12 months, and construction businesses should do it every 3 months.

In this blog post, you will learn about the legal requirements and how to keep your electrical appliances safe. Also, learn about the myths about testing frequency. So, let’s move ahead in the blog. 

What is portable appliance testing PAT?

Portable Appliance Testing (PAT) is a crucial process used to inspect electrical appliances and ensure the equipment is safe for use. It is important to maintain a secure environment for businesses, schools, industrial sites, and public areas. PAT testing ensures that the appliances are safe for use and comply with all relevant regulations.

Many businesses and organisations in the UK do not know about what is portable appliance testing PAT. This poses numerous problems for maintaining the UK’s safety standards, harming its reputation and also posing a health risk.

PAT testing is primarily carried out by a qualified PAT tester, who ensures that the portable equipment is safe to use. PAT testing helps prevent electrical incidents, such as fires and other injuries, including burns and electrical shocks.

What is portable appliance testing PAT

Why Is PAT Testing Important?

PAT testing plays a very important role in ensuring safety. Electrical appliances degrade over time due to wear and tear, misuse, or environmental factors. Without regular checks, these faulty appliances can cause harm. 

If you know how often PAT testing should be done, then you create a safety net for your workplace and minimise the risk factors. This is not only to comply with UK laws, but it’s also about protecting people and ensuring the safe working of the electrical equipment.

Regular testing helps you stay safe and also makes it easy for you to claim insurance. This enables you to comply with the law, also saves money and ensures a safer working environment.

Who carries out a PAT test?

PAT testing should be done by a competent person trained in electrical safety. While you can train to 

It is best that one of the following people be employed, who can undertake PAT testing:

• A trained in-house employee with the proper knowledge and tools

• An external contractor or qualified engineer

• A trained person completing the accredited training from Essential Safety Training


Some businesses choose to train staff to perform basic visual inspection, and in-depth testing is done by a professional. The person testing the electrical appliances must ensure that they follow the IET Code of Practice

What equipment needs to be PAT tested?

The electrical equipment that plugs into the mains should undergo PAT testing. There are 3 categories of equipment for PAT testing UK.  In category one are the most dangerous, with those in category 3 being the least. The rating of the item will have a direct bearing on the need for PAT testing. All must ensure that all items in category 1 are PAT tested, and Items in category 2 will only require an insulation test.

Examples of class 1 appliances include:

  • Refrigerators,
  • Microwaves,
  • Kettles,
  • Irons,
  • Toasters, etc.

Examples of class 2 appliances include:

  • Hair dryers,
  • Televisions,
  • Computers,
  • Photocopiers,
  • DVD players,
  • Small kitchen appliances,
  • Table lamps, etc.

Examples of class 3 appliances include:

  • Mobile Phones,
  • Torches,
  • Cameras,
  • Low-Energy Light Bulbs, etc.

Whether you’re in an office or running a warehouse, PAT testing helps ensure every plug-in item is safe to use.

What Is the difference between a Class I and Class II electrical appliance?

There are significant differences between Class I and Class II, and understanding these differences helps you comprehend how electrical PAT testing is performed on each type of device.

FeaturesClass I appliancesClass II applications
Safety DesignRelies on Earth connection for protection.Has double or reinforced insulation.
Earth Wire Required?Yes, needs an earth wire.No, it does not require an earth wire.
Plug TypeUsually has a three-pin plug.Often has a two-pin plug or a three-pin plug without an earth wire.
Risk LevelHigher risk if the fault develops.Lower risk due to internal insulation.
PAT Testing NeedsRequires both visual and complete electrical tests.Usually requires visual inspection and an insulation test.
Symbol on ApplianceNo specific symbol.Marked with a double square symbol.
Example AppliancesRefrigerators, Microwaves, Kettles, Irons, Toasters, etc.Hair dryers, Televisions, Computers, Photocopiers, DVD players, Small kitchen appliances, Table lamps, etc.

PAT testing frequency

PAT testing frequency does not have a fixed time frame and is not legally required. But there are some guidelines that help businesses decide the appropriate time for testing. Moreover, the frequency varies due to different factors, including types of equipment, usage and the kind of environment it is used in. 

When you are deciding how often does a PAT test need to be done. Always consider the working environment and appliance type. Offices and low environments require testing every 2-4 years. Also, regular visual inspections between tests are important. This helps catch issues early and reduces risks.

PAT testing for offices and shops

In offices and shops, PAT testing should be done every 2-4 years. Typically, there is equipment such as monitors, printers, kettles, and other electrical appliances in offices and shops. Plus, some equipment, like vacuum cleaners, needs to be tested annually.

This time frame can be adjusted due to environmental factors and the specific uses of the equipment. It helps offices and shops ensure safety and prepare for any potential risk factors. Additionally, maintaining a visual inspection schedule helps spot risks faster and maintain compliance, protecting employees. 

PAT testing for schools and colleges

PAT testing for schools and colleges involves a mix of equipment classes. There is a wide range of Class I and Class II equipment, such as desktops, extension leads, science laboratory equipment, laptop chargers, projectors, speakers, and many more. 

In schools and colleges, Class I equipment should be tested every year, and Class II equipment should be tested every 2 years. This ensures compliance with the law and maintains safety in schools and colleges. 

PAT testing for construction businesses

PAT testing for construction business should be done every 3 months. In the construction business, there is a heavy use of portable tools and equipment. This kind of wear and tear increases the risk of electrical failure and leads to shocks, fire or serious injuries.

This is why the PAT testing UK guidelines suggest that visual inspection should be done weekly to avoid any kind of risk. It protects workers and keeps the construction site safe and legally compliant.

PAT testing in industrial settings

Frequency of PAT testing in industry settings should be done every 6-12 months. However, some equipment that is exposed to dust, moisture or physical damage needs to be tested more frequently. In an industrial setting, many heavy-duty appliances must be tested regularly to ensure safety. 

If proper PAT testing is not conducted, accidents may occur. And this makes the working environment very risky. Proper PAT testing supports health and safety compliance and reduces downtime from equipment failure. 

PAT testing in industrial settings

PAT testing for public use equipment

PAT testing for public use equipment should be performed every 6-12 months. This also depends on the last usage of the equipment. Public use equipment is usually in libraries or community centres, and this equipment needs to be visually tested so that any accidents can be prevented early. 

There are many high-risk pieces of equipment, like vending machines and hair dryers in hotels, that require special attention. Public use equipment is tested more frequently because users won’t report faults or treat the equipment with care.

Pat testing checklist

PAT testing is an important part of the workplace safety procedures in the UK. Whether you are in offices and shops, schools and colleges, construction businesses, or industrial settings, maintaining a PAT testing checklist helps you maintain the frequency of testing. The PAT testing checklist includes:

  • Identify and make a List of the equipment according to the PAT Class.
  • Assess the environment and the usage of the equipment.
  • Visual inspection for any damaged wires.
  • Check the Earth continuity test for the Class I equipment. 
  • Record and label after testing.
  • Remove or repair faulty equipment.
  • Review regularly and update the testing schedule.

This helps ensure compliance and safety for any business, school, or other establishment where PAT testing is required.

PAT testing frequency table(Frequency)

Here is a PAT testing frequency table sourced from the IET Code of Practice, which helps you get a better idea of how often you should perform PAT testing.

EnvironmentEquipment TypeSuggested Frequency

Office
IT equipmentEvery 2–4 years
Kitchen appliancesEvery year
Schools/CollegesScience Lab equipmentEvery 12 months
IT equipment Every 1-2 years
Construction SitePower toolsEvery 3 months
Industrial/WorkshopsHeavy machineryEvery 6–12 months
Public SpacesComputer, Vending machineEvery 6–12 months

The process of PAT testing

Before understanding the process of PAT testing, you should know who can carry out PAT testing. It does not have to be an electrician. But the person should be trained and familiar with the actual process. If you’re competent with the IET code of practice and using the correct equipment, you’re good to conduct PAT testing. 

Here is the process of PAT testing:

  • Start with the visual check of the equipment.
  • Check the equipment type (E.g., Class I, Class II, Class III).
  • Check the plug if possible.
  • Use the PAT testing machine like earth continuity, polarity check and insulation resistance.
  • After testing, label the equipment.
  • Keep a proper record for each tested item.
  • Repair the failed item or remove it.

These processes ensure that the equipment remains safe to use. 

There are no specific legal requirements for PAT testing in the UK. But everyone should maintain the Work Regulation 1989 to ensure the equipment and environment are safe for everyone. 

Although there is no law to set a schedule, every workplace should maintain a PAT testing schedule to ensure a safe working environment. It helps identify problems earlier and keeps the workplace safe from accidents and injuries. 

Benefits of PAT testing

PAT testing seems like a routine task, but it plays a crucial role in keeping the workplace safe and complying with the rules and regulations. If you are in an office environment, a construction site, or a school, regular checking of electrical equipment brings peace of mind and helps prevent any unavoidable incidents. 

Here are the benefits of PAT testing below:

  • Keeps people safe
  • Reduces fire and accident risk
  • Shows compliance with safety laws
  • Helps with insurance claims
  • Extends appliance lifespan
  • Builds customer and employee trust

Common myths about PAT testing

There are many common myths about PAT testing. Some believe that PAT testing should be required every year. But this is not true. PAT testing frequency depends on the type of equipment and its uses.

Also, many think that it is very expensive. But there are many affordable PAT testing UK services, and if you do PAT testing course, you can do basic PAT testing. PAT testing needs to be done on all items, regardless of whether they are new or old. 

Risk of neglecting PAT testing

The risk of neglecting PAT testing can lead to serious incidents. This increases the risk and poses a significant safety concern. Regular PAT testing reduces the risk and helps avoid any unwanted incidents. 

Some risks of neglecting PAT testing are:

  • Electric Shock or burn.
  • Electric fire.
  • Injuries to staff.
  • Breach of UK safety law.
  • Costly equipment breakdown.
  • Harm the reputation of the company.
  • Possible fines and legal actions.
Risk of neglecting PAT testing

FAQ

How much does the average PAT test cost?

The average PAT test in the UK costs around £1 to £2 per item, with a minimum call-out charge of about £40 to £60. Prices may vary depending on location, number of items, and service provider. Bulk testing often works out cheaper per item.

Do you need insurance for PAT testing?

Yes, if you offer PAT testing as a service, you’ll need public liability insurance to cover any damage or injury that may occur. Employers’ liability insurance is also needed if you have staff. It protects you legally and demonstrates to clients that you’re a responsible and professional tester in the UK.

Can you do a PAT test yourself?

Yes, you can do a PAT test yourself if you’re properly trained and understand what you’re doing. You’ll also need the right equipment. While you don’t have to be an electrician, you must be competent to carry out safe and accurate testing, especially in a workplace setting.

Conclusion

Understanding how often should PAT testing be done UK keeps the organisation safe and compliant with the UK regulations. Maintaining the correct PAT testing frequencies protects people, property, and the business. 

Don’t overlook PAT testing. It is a simple step to make a difference for everyone.