What is PAT testing?
PAT Testing, short for Portable Appliance Testing, is the process of systematically inspecting and testing electrical appliances to ensure they are safe to use. It involves both visual checks and electrical tests, with all results carefully recorded for safety compliance.
For more information see: https://www.derbypat.co.uk/what-is-pat-testing/
How many things do I need testing?
If you’ve had PAT Testing carried out before, your previous report should show the total number of appliances used within your business. However, if this is your first time arranging a PAT Test, you’ll need to identify which appliances require testing and count them manually. In general, any item that uses mains electricity to operate must be tested individually.
For example, a computer setup doesn’t count as a single appliance. A typical workstation may include multiple items connected through two extension leads, powering the monitor, base unit, and printer. Additional power supply units might also feed the router, scanner, speakers, and other peripherals. Altogether, this could amount to fifteen separate items. Once you include extras like a desk fan, lamp, or phone charger, the number of appliances can increase significantly.
At StonePAT Testing, we recommend adding around 10% to your total appliance count to account for hidden leads, spare equipment, and stored items that may also need testing.
How often do items need testing?
The recommended frequency of PAT Testing can vary depending on factors such as the type of appliance, how often it’s used, where it’s located, and the results of previous inspections. While specific requirements may differ, StonePAT Testing suggests the following general guidelines:
Every 3 months: For construction tools, equipment regularly used outdoors, or items accessible to the public.
Every 6 months: For appliances that are frequently moved — such as mobile disco or event equipment — or those kept in damp, harsh, or workshop environments.
Every 12 months: For standard office, retail, school, or call centre appliances.
It’s also important to confirm the required testing frequency with your insurance provider, as their policies may specify different intervals for compliance.
Do we need PAT testing?
Under the Provision and Use of Work Equipment Regulations (1998), employers must ensure that all work equipment is safe and suitable for its intended purpose.
Current guidelines also require that when hiring a PAT Testing engineer, the employer or duty holder must confirm that the engineer is fully qualified and competent to perform the work, that all testing equipment is properly calibrated, and that the company is accredited by a recognised industry regulatory body. In addition, the business must hold valid Liability and Professional Indemnity insurance, with certificates made available before testing begins.
For complete peace of mind, StonePAT Testing is regularly independently assessed, ensuring we consistently meet — and exceed — the highest industry standards. We’re here to help you fulfil your Health & Safety obligations and maintain a safe workplace environment.
Why does something need testing?
The Electricity at Work Regulations (1989) state that “All electrical systems shall be maintained so as to prevent, so far as is reasonably practicable, any danger.” This includes both fixed electrical installations and all portable or transportable equipment. The regulations make it clear that every employer and self-employed person has a duty to comply with these requirements.
These regulations place a legal responsibility on employers, employees, and the self-employed to take practical steps that ensure a safe working environment. Employers must implement and maintain effective measures to protect staff and visitors from electrical risks. In the event of an electrical accident, the employer must be able to demonstrate that appropriate safety procedures and maintenance were in place. To achieve this, a structured and regular programme of inspection, testing, and maintenance is required.
The Health & Safety at Work Act (1974) reinforces this obligation in situations where:
Appliances are used by employees
The public may use appliances in places such as hospitals, schools, hotels, or shops
Appliances are supplied or hired out
Appliances are repaired or serviced
In short, these regulations apply to almost every business and self-employed individual operating within the UK.
At StonePAT Testing, we provide professional PAT testing services for a wide range of clients — from large industrial companies and offices to small businesses, salons, hospitality venues, and entertainment providers. To help you meet both legal and insurance requirements, all our portable appliance testing is carried out by fully qualified and competent engineers using calibrated equipment and approved procedures.
What will you test?
Following a thorough onsite survey, we will test all electrical appliances as identified and agreed, except for:
Items that we have been specifically asked not to test
New items that are in sealed packaging
Items that have been marked as scrap, to be thrown out, faulty or not to be used