What is PAT Testing (In-Service Inspection and Testing of Electrical Equipment)?

In any workplace, safety is a top priority. One essential aspect of maintaining a safe environment is ensuring that electrical appliances are safe to use. That’s where PAT Testing (Portable Appliance Testing) comes in. In this blog, we’ll break down what PAT Testing is, why it’s important, and how often businesses need to conduct these inspections to stay compliant with safety regulations.

🔌 What is PAT Testing?

PAT Testing, or In-Service Inspection and Testing of Electrical Equipment, is a process that checks the safety of electrical appliances and equipment used in the workplace. The goal is to reduce the risk of electrical accidents by identifying potential defects or hazards in appliances that could cause electric shock, fire, or injury.

PAT Testing involves both visual inspection and electrical testing using specialised equipment to ensure appliances are safe to use.

⚙️ Why is PAT Testing Important?

Over time, electrical appliances can degrade or become damaged, posing a risk to users. Regular PAT Testing helps identify any faults or hazards before they become dangerous. For businesses, ensuring electrical safety is not just a best practice – it’s also a legal requirement under several UK regulations, such as:

• The Electricity at Work Regulations (1989)

• The Health and Safety at Work Act (1974)

• The Provision and Use of Work Equipment Regulations (PUWER)

While there is no specific legal requirement to conduct PAT Testing, businesses are responsible for maintaining electrical equipment in a safe condition. PAT Testing is a practical way to meet these obligations and avoid potential accidents, fines, or legal consequences.

📋 What Types of Equipment Need PAT Testing?

PAT Testing applies to any portable electrical appliance that can be plugged into a socket. This includes:

• Computers and monitors

• Kettles and microwaves

• Power tools

• Extension leads

• Chargers

• Lamps

It can also apply to fixed appliances, such as dishwashers or washing machines, if they are connected to the electrical supply via a plug.

🔄 How Often Should PAT Testing Be Done?

The frequency of PAT Testing depends on several factors, including the type of equipment and the environment it is used in. High-risk environments, like construction sites, require more frequent testing compared to low-risk environments, like offices.

Here are some general guidelines:

Businesses should assess their own risk levels and adjust testing frequencies accordingly.

✅ What Happens During PAT Testing?

PAT Testing involves two key stages:

1. Visual Inspection

   • Checking for visible signs of damage, such as:

     • Frayed cables

     • Cracked plugs

     • Exposed wires

     • Damaged or loose sockets

2. Electrical Testing

   • Using a PAT tester device to conduct checks such as:

     • Earth Continuity Test: Ensures the appliance’s earth connection is intact.

     • Insulation Resistance Test: Measures the resistance of the appliance’s insulation to prevent electric shock.

     • Polarity Check: Ensures the wiring is correctly connected.

     • Load Test: Verifies that the appliance functions correctly under normal conditions.

After testing, appliances that pass are typically labelled with a PAT Testing sticker indicating the next inspection date.

🧰 Who Can Perform PAT Testing?

PAT Testing should be carried out by someone who is competent and trained to perform the tests safely and effectively. While there is no formal qualification legally required, the tester must:

• Understand electrical safety principles

• Know how to use a PAT testing device

• Identify potential hazards

In many cases, businesses choose to outsource PAT Testing to qualified professionals. Alternatively, companies can train in-house staff to carry out the inspections.

📊 Keeping Records of PAT Testing

It’s essential to maintain detailed records of all PAT Testing. These records should include:

• Equipment ID

• Test Date

• Tester’s Name

• Test Results (Pass/Fail)

• Next Test Due Date

Keeping accurate records helps businesses demonstrate compliance with safety regulations and ensures that faulty equipment is identified and addressed promptly.

💡 Final Thoughts

PAT Testing plays a crucial role in maintaining electrical safety in the workplace. By regularly inspecting and testing appliances, businesses can reduce the risk of electrical accidents and stay compliant with safety regulations.

At SERT, we offer PAT Testing training and recruitment services to help businesses meet their safety obligations. Whether you need trained professionals to conduct PAT Testing or want to upskill your in-house team, we can support your safety goals.

Contact SERT today to learn more about our training and recruitment solutions