What Is PAT Testing And Why Is It Important?

2 min read
27 March, 2025

Electrical equipment is used in many different settings, from nurseries and schools to shops and offices, playing a critical role in everyday operations. Faults in such equipment, however, can develop over time, and often lie unseen. Hidden electrical problems can expose users, including students, employees and visitors, to unacceptable risks of injury or even death.

Portable Appliance Testing (PAT) is designed to ensure electrical safety and mitigate the risks posed by faults. In this article, we’ll explain how PAT works, what are PAT tests and why it they are essential for your organisation.

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What Is PAT Testing?

Portable Appliance Testing is a safety inspection that aims to identify and address electrical hazards in portable appliances, from computers and printers to kettles and toasters. The process involves two key steps:

  1. Visual inspection: During the visual inspection, the PAT tester checks for obvious signs of damage, such as frayed cables, cracked plugs, or exposed wires.

  2. Electrical testing: Critical safety parameters are measured, such as insulation resistance and earth bond continuity, to ensure the appliance’s integrity.

PAT testing is typically carried out using specialist equipment by a qualified technician. Once an appliance passes the test, it is labelled as safe to use, providing reassurance to both users and business owners.

How Often Should PAT Testing Be Carried Out In Schools?

Whereas PAT testing in offices and similar environments should be conducted every two to four years, nurseries and schools are unique environments with high foot traffic and more frequent of electrical equipment. Given the increased likelihood of accidental damage, schools must prioritise regular PAT testing to safeguard students and staff.

The frequency of testing depends on several factors:

  • The type of equipment: Class 1 equipment, which has basic insulation and an earth connection, should be tested annually. Class 2 equipment, which uses double or reinforced insulation, should be tested every two years.

  • High-usage areas: Due to increased wear and tear, equipment in high-usage areas may require more frequent testing.

  • Environmental factors: Damp, dust, and temperature variations can affect the performance of electrical equipment, making faults more likely.

Consulting a PAT testing professional can help schools to develop an appropriate schedule that meets safety standards and legal requirements.

Why Is PAT Testing Important?

PAT testing is a legal requirement and is essential to ensure workplace safety and operational continuity:

  • Legal and ethical responsibility: Business owners and school site managers have a duty of care to ensure the safety of employees, students, and visitors. Regular PAT testing helps to fulfill this obligation by identifying and addressing potential electrical hazards.

  • Accident prevention: Faulty electrical appliances are a leading cause of workplace accidents, including electric shocks and fires. PAT testing significantly reduces the risk of such incidents, protecting people and property.

  • Insurance requirements: Many insurance providers require proof of PAT testing as part of their terms of business. A PAT testing schedule ensures compliance and safeguards businesses against potential financial losses in the event of an incident.

Find Out More

At Orion Technical Services, our expert technicians can carry out professional and reliable PAT tests on your behalf, ensuring that your electrical equipment is free from faults and safe to use.

For more information on planned and prevenataive maintenance measures like PAT tests, please get in touch today.

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