A kettle in an office kitchen, a desk monitor, a cleaner’s vacuum and a tenant’s supplied microwave may look harmless. Yet each is an electrical appliance that can become a shock or fire risk if its plug, lead or internal components deteriorate. That is why the question of who needs portable appliance testing matters to far more than large companies with busy workplaces.
Portable Appliance Testing, usually called PAT testing, is a practical way to identify faults before an appliance is used. It combines a visual inspection with electrical checks where appropriate, helping those responsible for a property or workplace demonstrate that they are managing electrical safety properly.
Who needs portable appliance testing?
PAT testing is relevant to anyone responsible for electrical equipment used by employees, tenants, customers, contractors or the public. In practice, this includes business owners, employers, landlords, letting agents, facilities managers, schools, charities, offices, shops, hospitality venues and construction businesses.
The need is strongest where appliances are supplied for work or communal use. An employer providing computers, extension leads, printers, heaters, kitchen equipment or cleaning machinery has a duty to keep that equipment safe. A landlord who supplies appliances as part of a tenancy should also make sure they are safe at the start of the tenancy and maintained in safe condition throughout.
For a homeowner, PAT testing is not normally a legal obligation. However, it can be sensible after a renovation, flood, electrical fault or long period of storage, particularly for frequently used equipment such as power tools, garden machinery or appliances in a home office.
Employers and business owners
Employers have legal duties under the Electricity at Work Regulations 1989 to maintain electrical systems so far as reasonably practicable to prevent danger. The regulations do not say that every appliance must receive a PAT test annually. What they require is an effective maintenance system based on risk.
For many businesses, PAT testing is a clear and proportionate part of that system. It provides a record of inspected equipment, identifies damaged leads and plugs, and helps prevent unsafe items remaining in use. It is especially valuable in workplaces where several people use the same equipment or where appliances are moved regularly.
An office with fixed desktop equipment may need less frequent testing than a workshop, café or salon. A construction site using portable tools in demanding conditions will usually need closer inspection and more regular checks. The setting, the type of appliance and how it is used all matter.
Landlords, letting agents and property managers
Landlords are not generally required to hold a separate PAT certificate for every appliance, but they do have a duty to ensure electrical equipment they provide is safe. This is separate from the requirement for a valid Electrical Installation Condition Report, or EICR, in rented homes in England.
If a furnished flat includes a washing machine, fridge freezer, microwave, lamps or television, PAT testing gives landlords a straightforward record that the supplied items were checked. It can be particularly useful between tenancies, when appliances may have been damaged, moved or replaced.
For HMOs, serviced accommodation, communal areas and managed blocks, the case is stronger. Shared kettles, vacuum cleaners, laundry equipment, fans, extension leads and maintenance tools are exposed to regular use by different people. A planned PAT testing programme helps property managers keep control of the equipment they supply and act quickly when faults are found.
Tenants remain responsible for their own appliances. A landlord is not normally expected to PAT test a tenant’s personal toaster, charger or television, although concerns about visibly damaged equipment should never be ignored where there is an immediate safety risk.
Schools, community venues and charities
Schools, nurseries, places of worship, village halls and charity premises often have a mixture of owned, donated and borrowed equipment. This can make appliance safety harder to manage. Items are brought in for events, stored for months, then used heavily over a short period.
PAT testing helps create an accurate asset record and separates safe, approved equipment from items that need repair or replacement. It is also sensible to have a clear policy for personal appliances brought in by staff, volunteers or hirers, particularly heaters, cooking equipment and extension leads.
Contractors and mobile workers
Electricians, builders, cleaners, caterers, IT technicians and other mobile workers often rely on portable equipment every day. Drills, chargers, leads, test equipment, hoovers and site lighting can be subject to knocks, damp, dust and frequent transport.
In these conditions, visual checks before use are essential. Formal inspection and testing should follow a frequency that reflects the equipment and environment. A damaged cable or cracked casing can be obvious, but internal faults may not be. PAT testing adds another layer of protection and gives clients confidence that equipment brought onto their site is properly maintained.
What counts as a portable appliance?
A portable appliance is broadly any electrical item that can be moved while connected to, or readily connected to, a power supply. The term covers far more than small handheld devices.
Common examples include computers and monitors, printers, kettles, microwaves, fans, portable heaters, extension leads, phone chargers, cleaning equipment, power tools and table lamps. Some equipment may be fixed in place but connected by a plug and socket, such as a wall-mounted television or a dishwasher. These may also form part of an appliance testing programme.
Battery-powered equipment that is never connected to mains electricity does not usually need PAT testing. Its charging lead or charging dock may need inspection, however. Likewise, fixed wiring, consumer units and hard-wired equipment are not PAT items. They should be assessed through the appropriate electrical inspection and maintenance arrangements, including an EICR where required.
Is PAT testing a legal requirement?
PAT testing itself is not a legal requirement with a set annual deadline. This is an important distinction, because businesses and landlords are sometimes told that every item must be tested once a year regardless of use. That is not how electrical safety law works.
The legal requirement is to maintain electrical equipment in a safe condition. PAT testing is one recognised method of meeting that duty, alongside user checks, formal visual inspections, repairs, replacement and clear records.
The right approach is risk-based. A rarely moved desktop computer in a clean office presents a different level of risk from a heavily used extension lead on a building site. Setting the same testing interval for both may be unnecessary in one case and insufficient in the other.
How often should appliances be tested?
There is no single timetable that suits every property. A competent electrician will consider the environment, appliance class, frequency of use, age, condition and whether the item is moved or handled often.
As a general rule, portable tools, extension leads and equipment used in industrial, construction, catering or public-facing environments usually need more frequent attention. Office IT equipment in a low-risk environment may require less frequent formal testing, supported by routine visual checks. Landlords may choose to test supplied appliances between tenancies or at suitable intervals as part of planned property maintenance.
The key is not to treat a passing sticker as a guarantee of safety for years to come. Equipment can be damaged the day after testing. Staff, tenants and contractors should be encouraged to report loose plugs, frayed cables, scorch marks, cracked cases, overheating and intermittent operation immediately.
What happens during a PAT test?
A proper PAT test begins with a close visual inspection. Many faults are found at this stage, including damaged cable insulation, overloaded extension blocks, loose plug pins, incorrect fuses and signs of overheating.
Where suitable, the electrician then uses calibrated testing equipment to carry out electrical checks. These may assess earth continuity, insulation resistance and polarity, depending on the appliance type. The item is marked as passed or failed, and a clear report records the result.
Failed appliances should be removed from service straight away. Some faults, such as a damaged plug or cable, can often be repaired economically. Others may make replacement the safer option. The value of testing lies in acting on the results, not simply collecting certificates.
PAT testing and wider electrical compliance
PAT testing does not replace an EICR, fire alarm inspection or emergency lighting test. Each service covers a different part of electrical safety.
An EICR assesses the fixed installation, including circuits, sockets, earthing and the consumer unit. PAT testing focuses on plug-in appliances. Businesses and landlords often need both, alongside appropriate testing of emergency lighting and fire safety systems where installed.
Keeping these responsibilities organised can be difficult across several properties or busy premises. PG Electrical can help clients across Greater London and Kent establish a practical testing schedule that reflects the equipment, building use and level of risk involved.
Electrical safety is most effective when it becomes routine rather than a last-minute response to a fault. If you supply appliances, manage a workplace or oversee rented property, a risk-based PAT testing plan is a sensible way to protect people, maintain compliance and deal with problems before they disrupt your day.
