Portable Appliance Testing (PAT) Testing
Commercial Portable Appliance Testing (PAT) Testing
When a PAT test (Portable Appliance Testing) is undertaken in the UK, it involves the examination and testing of electrical appliances to ensure they are safe to use.
When PAT test (Portable Appliance Testing) is undertaken in the UK, it involves the examination and testing of electrical appliances to ensure they are safe to use. This is part of a broader electrical safety regime, particularly in workplaces and rental properties.
What is included in a PAT Test?
PAT testing typically consists of three main stages:
1. Visual Inspection
A thorough visual check to spot obvious signs of damage or misuse:
- Damaged plugs or casings.
- Loose wires or exposed conductors.
- Signs of overheating (discolouration, melting).
- Cable condition (e.g., fraying, crushing).
- Correctly wired and fused plugs.
- Equipment suitability for environment (e.g. IP rating for wet areas).
2. Electrical Testing
This depends on the class of appliance (Class I, II, or III), but may include:
- Damaged plugs or casings.
- Loose wires or exposed conductors.
- Signs of overheating (discolouration, melting).
- Cable condition (e.g., fraying, crushing).
- Correctly wired and fused plugs.
- Equipment suitability for environment (e.g. IP rating for wet areas).
Some devices like Class II appliances (double insulated) won’t need an earth test.
3. Labelling & Documentation
- “Pass” or “Fail” label with date, tester ID, and retest date (optional).
- Log of test results (manual or digital).
- Certificate or report (for compliance records).
Standards that Govern PAT Testing in the UK
PAT testing in the UK is not specifically required by a single law but is covered under several Health & Safety regulations. Key standards and regulations include:
Key Legislation:
- Electricity at Work Regulations 1989 – Requires that electrical equipment is maintained in a safe condition.
- Health and Safety at Work Act 1974 – Employers must ensure the safety of employees and the public.
- Provision and Use of Work Equipment Regulations 1998 (PUWER) – Equipment must be suitable and safe for use.
- Management of Health and Safety at Work Regulations 1999 – Risk assessments must be carried out.
Standards and Guidance:
- IET Code of Practice for In-Service Inspection and Testing of Electrical Equipment – The main guidance document for PAT testing procedures in the UK (currently 5th Edition, published in 2020).
- BS EN 50699:2020 – “Recurrent Tests of Electrical Equipment” – Supports the IET Code of Practice, focusing on periodic testing.
- BS 7671 (IET Wiring Regulations) – Electrical installation regulations – While more focused on fixed wiring, some crossover with portable appliances exists.
Equipment Commonly PAT Tested
- Computers, monitors, printers.
- Kettles, microwaves, toasters.
- Extension leads.
- Power tools.
- Chargers and adaptors.
How Often Should PAT Testing Be Done?
There is no fixed legal interval, but frequency should be based on:
- Risk assessment.
- Type of equipment.
- Usage environment.
- Manufacturer’s recommendations.
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