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PAT - Portable appliance testing FAQs

There are many common myths about portable appliance testing (PAT) - find out the key facts about the inspection and testing of portable electrical equipment here.

The Electricity at Work Regulations 1989 require that any electrical equipment that has the potential to cause injury is maintained in a safe condition. However, the Regulations do not specify what needs to be done, by whom or how frequently (ie they don't make inspection or testing of electrical appliances a legal requirement, nor do they make it a legal requirement to undertake this annually).

The frequency of inspection and testing depends upon the type of equipment and the environment it is used in. For example, a power tool used on a construction site should be examined more frequently than a lamp in a hotel bedroom. For guidance on suggested frequencies of inspection and testing, see: Maintaining portable and transportable electrical equipment.[72]

There is no legal requirement to label equipment that has been inspected or tested, nor is there a requirement to keep records of these activities. However, a record and / or labelling can be a useful management tool for monitoring and reviewing the effectiveness of the maintenance scheme – and to demonstrate that a scheme exists.

New equipment should be supplied in a safe condition and not require a formal portable appliance inspection or test. However, a simple visual check is recommended to verify the item is not damaged.

The person doing testing work needs to competent to do it. In many low-risk environments, a sensible (competent) member of staff can undertake visual inspections if they have enough knowledge and training. However, when undertaking combined inspection and testing, a greater level of knowledge and experience is needed, and the person will need:

  • the right equipment to do the tests
  • the ability to use this test equipment properly
  • the ability to properly understand the test results

It is strongly recommended that equipment suppliers formally inspect and test the equipment before each hire, in order to ensure it is safe to use. The person hiring the equipment should also take appropriate steps to ensure it remains safe to use throughout the hire period. The question 'What is portable appliance testing?' above gives guidance on what this will entail.

A high street travel agent's approach to PAT

A high street travel agency thought about what it needed to do to maintain its portable electrical equipment. As their work generally included office work and dealing with customers the manager considered that health and safety risks would be generally low. The portable electrical equipment was used in a clean and dry shop by a small number of employees. In deciding what action was needed:

  • the manager thought about the type of portable equipment that was used in their shop and the level of risk that it might create;
  • she looked for electrical equipment in the shop and found that there were a number of computers, a fax, two printers and a vacuum cleaner;
  • she then thought about the likelihood that the items could become damaged:
    • Computers, printers and faxes were not moved around much and were positioned so that the cables could not become trapped, so the probability that items might be damaged was extremely low. The manager decided that they would be maintained by a visual inspection every 5 years.
    • The vacuum cleaner was heavily used. The manager remembered that the cable was repaired 6 months ago by an electrician as it had been pulled out of the cable grip, so she knew that in future it would need to be looked at more often. It was decided that the vacuum should have a visual inspection every 6 months and that employees would be encouraged to look for signs of damage to the plug and cable before plugging it in.
  • The manager kept a note of the checks in her diary to remind herself to re-inspect the equipment.
  • Only the vacuum cleaner was thought to present a high risk, so the manager decided to get this tested after twelve months and review this after 24 months.
  • None of the remaining equipment in use was thought to present a high risk, so the manager decided that full portable appliance testing was not needed for these items.

Key Points:

  • Portable electrical equipment must be maintained to prevent danger.
  • For most portable electrical equipment in a low-risk workplace, a portable appliance test is not needed.
  • Working out what you have to do is not time consuming or complicated.
  • Simply looking for signs of damage is a good way of Maintaining portable electric equipment.

HSE's approach to maintaining portable appliances in its own offices

In 2011, the HSE reviewed its approach to portable appliance maintenance in its own offices. Thinking about the type of equipment in use, and how it was used, the HSE looked back at the results from its annual testing of portable appliances across its estate over the last five years. Using the results of the previous tests, the HSE decided that further portable appliance tests are not needed within the foreseeable future or at all for certain types of portable equipment. Also, they decided to continue to monitor any faults reported as a result of user checks and visual inspections and review its maintenance system if evidence suggests that it needs revising. Electrical equipment will continue to be maintained by a series of user checks and visual inspections by staff that have had some training.

Key Points:

  • Annual portable appliance testing is not always necessary in low risk environments
  • You do not need to be an electrician to carry out visual inspections
  • Low cost user checks and visual inspections are a good method of Maintaining portable electric equipment

No. The law simply requires an employer to ensure that their electrical equipment is maintained in order to prevent danger. It does not say how this should be done or how often. Employers should take a risk-based approach, considering the type of equipment and what it is being used for. If it is used regularly and moved a lot eg a floor cleaner or a kettle, testing (along with visual checks) can be an important part of an effective maintenance regime giving employers confidence that they are doing what is necessary to help them meet their legal duties. HSE provides guidance on how to maintain equipment including the use of PAT.

Link URLs in this page

  1. Electrical safetyhttps://www.hse.gov.uk/ELECTRICITY/index.htm
  2. Overview - HSE electrical safetyhttps://www.hse.gov.uk/ELECTRICITY/hse.htm
  3. How we work https://www.hse.gov.uk/ELECTRICITY/how.htm
  4. Who we are https://www.hse.gov.uk/ELECTRICITY/who.htm
  5. Contactshttps://www.hse.gov.uk/ELECTRICITY/contacts.htm
  6. Electrical injurieshttps://www.hse.gov.uk/ELECTRICITY/injuries.htm
  7. Overview - Simple precautionshttps://www.hse.gov.uk/ELECTRICITY/precautions.htm
  8. Work near electricityhttps://www.hse.gov.uk/ELECTRICITY/nearelectric.htm
  9. Excavation and underground serviceshttps://www.hse.gov.uk/ELECTRICITY/information/excavations.htm
  10. Overhead power lineshttps://www.hse.gov.uk/ELECTRICITY/information/overhead.htm
  11. Work using electrically powered equipmenthttps://www.hse.gov.uk/ELECTRICITY/electricequip.htm
  12. Work on electrical equipment, machinery or installationshttps://www.hse.gov.uk/ELECTRICITY/withequip.htm
  13. Maintaining electrical equipmenthttps://www.hse.gov.uk/ELECTRICITY/maintenance/safety.htm
  14. Electricity in potentially explosive atmosphereshttps://www.hse.gov.uk/ELECTRICITY/explosive.htm
  15. Standards and codes of practicehttps://www.hse.gov.uk/ELECTRICITY/standards.htm
  16. Electrical safety FAQshttps://www.hse.gov.uk/ELECTRICITY/faq.htm
  17. Overview - Electricity in potentially explosive atmospheres FAQshttps://www.hse.gov.uk/ELECTRICITY/atex/index.htm
  18. General, guidance and enforcement issueshttps://www.hse.gov.uk/ELECTRICITY/atex/general.htm
  19. Definitionshttps://www.hse.gov.uk/ELECTRICITY/atex/definitions.htm
  20. Interpretationhttps://www.hse.gov.uk/ELECTRICITY/atex/interpretation.htm
  21. Technical standardshttps://www.hse.gov.uk/ELECTRICITY/atex/standards.htm
  22. Existing equipment issueshttps://www.hse.gov.uk/ELECTRICITY/atex/existing.htm
  23. Imported productshttps://www.hse.gov.uk/ELECTRICITY/atex/imported.htm
  24. General issues and informationhttps://www.hse.gov.uk/ELECTRICITY/atex/issues.htm
  25. Liquefied petroleum gas (LPG) issueshttps://www.hse.gov.uk/ELECTRICITY/atex/lpg.htm
  26. Overview - Resourceshttps://www.hse.gov.uk/ELECTRICITY/information/index.htm
  27. General health and safetyhttps://www.hse.gov.uk/ELECTRICITY/information/general.htm
  28. Inspection & testinghttps://www.hse.gov.uk/ELECTRICITY/information/testing.htm
  29. Maintenancehttps://www.hse.gov.uk/ELECTRICITY/information/maintenance.htm
  30. Constructionhttps://www.hse.gov.uk/ELECTRICITY/information/construction.htm
  31. Farming/forestryhttps://www.hse.gov.uk/ELECTRICITY/information/agriculture.htm
  32. Public placeshttps://www.hse.gov.uk/ELECTRICITY/information/public.htm
  33. Potentially explosive atmosphereshttps://www.hse.gov.uk/ELECTRICITY/information/explosive.htm
  34. The lawhttps://www.hse.gov.uk/ELECTRICITY/information/law.htm
  35. Other workplaceshttps://www.hse.gov.uk/ELECTRICITY/information/other.htm
  36. Linkshttps://www.hse.gov.uk/ELECTRICITY/links.htm
  37. Overview - Accident case studieshttps://www.hse.gov.uk/ELECTRICITY/experience.htm
  38. Overview - Overhead power lineshttps://www.hse.gov.uk/ELECTRICITY/overhead/index.htm
  39. Lorry driver suffers burnshttps://www.hse.gov.uk/ELECTRICITY/overhead/lorry.htm
  40. Failing to warn driver of overhead lineshttps://www.hse.gov.uk/ELECTRICITY/overhead/farmer.htm
  41. Failure to isolate power supplyhttps://www.hse.gov.uk/ELECTRICITY/overhead/isolate.htm
  42. Erecting a lighting towerhttps://www.hse.gov.uk/ELECTRICITY/overhead/under.htm
  43. Scaffolding contacting overhead linehttps://www.hse.gov.uk/ELECTRICITY/overhead/scaffold.htm
  44. Moving tower scaffoldhttps://www.hse.gov.uk/ELECTRICITY/overhead/painters.htm
  45. Overview - Electrical maintenancehttps://www.hse.gov.uk/ELECTRICITY/maintenance/index.htm
  46. Changing an electrodehttps://www.hse.gov.uk/ELECTRICITY/maintenance/electrode.htm
  47. Touching live equipmenthttps://www.hse.gov.uk/ELECTRICITY/maintenance/touch.htm
  48. Incorrectly wired appliancehttps://www.hse.gov.uk/ELECTRICITY/maintenance/appliance.htm
  49. Insulating live wireshttps://www.hse.gov.uk/ELECTRICITY/maintenance/insulate.htm
  50. Faulty air conditioning unithttps://www.hse.gov.uk/ELECTRICITY/maintenance/aircondition.htm
  51. Live electrical panelhttps://www.hse.gov.uk/ELECTRICITY/maintenance/panel.htm
  52. Supply not been properly isolatedhttps://www.hse.gov.uk/ELECTRICITY/maintenance/isolate.htm
  53. Injuries result in amputationhttps://www.hse.gov.uk/ELECTRICITY/maintenance/amputation.htm
  54. Switchgear not isolatedhttps://www.hse.gov.uk/ELECTRICITY/maintenance/switchgear.htm
  55. Induction heat treatment machinehttps://www.hse.gov.uk/ELECTRICITY/maintenance/heart.htm
  56. Poorly constructed equipmenthttps://www.hse.gov.uk/ELECTRICITY/maintenance/testing.htm
  57. Pressure water washing machinehttps://www.hse.gov.uk/ELECTRICITY/maintenance/washingmachine.htm
  58. Metal fencehttps://www.hse.gov.uk/ELECTRICITY/maintenance/fence.htm
  59. Incorrectly wiring a machinehttps://www.hse.gov.uk/ELECTRICITY/maintenance/wiring.htm
  60. Mail wrapping machinehttps://www.hse.gov.uk/ELECTRICITY/maintenance/mail.htm
  61. Overview - Excavationshttps://www.hse.gov.uk/ELECTRICITY/excavations/index.htm
  62. Cable locatorhttps://www.hse.gov.uk/ELECTRICITY/excavations/locator.htm
  63. Road breakerhttps://www.hse.gov.uk/ELECTRICITY/excavations/roadbreaker.htm
  64. Pneumatic impact molehttps://www.hse.gov.uk/ELECTRICITY/excavations/mole.htm
  65. Pneumatic breakerhttps://www.hse.gov.uk/ELECTRICITY/excavations/breaker.htm
  66. Jackhammerhttps://www.hse.gov.uk/ELECTRICITY/excavations/jackhammer.htm
  67. Breaking concretehttps://www.hse.gov.uk/ELECTRICITY/excavations/concrete.htm
  68. Gas pipes and electrical cableshttps://www.hse.gov.uk/ELECTRICITY/excavations/digger.htm
  69. Overview - Ignition of potentially explosive atmosphereshttps://www.hse.gov.uk/ELECTRICITY/explosive/index.htm
  70. Removing paint in a yachthttps://www.hse.gov.uk/ELECTRICITY/explosive/paint.htm
  71. Cleaning electric stirrerhttps://www.hse.gov.uk/ELECTRICITY/explosive/clean.htm
  72. Maintaining portable and transportable electrical equipment.https://www.hse.gov.uk/pubns/books/hsg107.htm
  73. Maintaining portable and transportable electrical equipmenthttps://www.hse.gov.uk/pubns/books/hsg107.htm
  74. Maintaining portable electric equipment in offices and other low-risk environmentshttps://www.hse.gov.uk/pubns/indg236.htm
  75. Work using electrically powered equipmenthttps://www.hse.gov.uk/ELECTRICITY/electricequip.htm
  76. Maintaining portable electric equipment in low-risk environments (INDG236) https://www.hse.gov.uk/pubns/indg236.htm
  77. Memorandum of guidance on the Electricity at Work Regulations 1989 (HSR 25) https://www.hse.gov.uk/pubns/books/hsr25.htm
  78. Electricity at work: Safe working practices (HSG 85) https://www.hse.gov.uk/pubns/books/hsg85.htm
  79. Safety in electrical testing at work (INDG354)https://www.hse.gov.uk/pubns/indg354.htm
  80. ESQCRhttps://www.hse.gov.uk/esqcr/index.htm
  81. incidentshttps://www.hse.gov.uk/esqcr/index.htm
  82. Construction industryhttps://www.hse.gov.uk/construction/index.htm
  83. Agriculturehttps://www.hse.gov.uk/agriculture/index.htm
  84. Offshore divisionhttps://www.hse.gov.uk/offshore/index.htm
  85. Chemical industrieshttps://www.hse.gov.uk/chemicals/index.htm
  86. Quarrieshttps://www.hse.gov.uk/quarries/index.htm
  87. RIDDORhttps://www.hse.gov.uk/riddor/index.htm
  88. Statisticshttps://www.hse.gov.uk/statistics/index.htm

Glossary of abbreviations/acronyms on this page

ESQCR[80]
Electricity Safety, Quality and Continuity Regulations

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Updated 2023-01-09