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Portable appliance testing (PAT)

What is a portable appliance testing (PAT)?

Portable Appliance Testing or PAT Testing is the process of checking electrical appliances for safety through a series of visual inspections and electronic tests. It is a mandatory Health and Safety Regulation governed by a Code of Practice issued by the institute of Electrical Engineers.

Our team of professionals will carry out a visual inspection of the appliance, plug and lead. There is a common misconception that it is just equipment that can be plugged in, but it is a little more complex than that. The equipment will also inject test signals into the cable and appliance to ensure their integrity.

What will you receive?

The PAT tester whilst on site will apply a sticker stating whether the appliance has passed or failed. If passed, a date will be applied for when the next test needs to be completed by, which is typically 12 months. However, this can be from 6 to 24 months dependent on the appliance.

Visual Inspection

The visual inspection will take place before any electrical testing.


The first stage is to determine what type of PAT test is required. The two main choices here are the Dedicated PAT testers and Separate Test Equipment