A qualified PAT engineers checklist helps duty holders look beyond the price of a testing visit. The engineer working across your site may be testing equipment used by staff, pupils, patients, tenants or visitors. Their competence, planning and reporting all affect whether the work supports a safe, well-managed workplace.
Portable Appliance Testing is often treated as a routine annual task. In practice, the right approach depends on the equipment, its environment, how it is used and its history. A competent provider should make that process clear, keep disruption low and leave you with records that are useful if an incident, audit or insurer query arises.
What a qualified PAT engineer should be able to demonstrate
There is no single legal certificate called a PAT licence. Employers and duty holders have legal duties to maintain electrical equipment in a safe condition, principally under the Electricity at Work Regulations 1989. PAT is a commonly used method of supporting those duties, combining visual inspection and electrical testing where appropriate.
For that reason, qualifications matter, but they are not the only measure of competence. An engineer should have suitable training for portable appliance inspection and testing, practical experience, an understanding of electrical risks, and the ability to apply a sensible inspection regime to your premises. City & Guilds qualifications are a recognised indicator of relevant technical training. They should be supported by current working practices, properly maintained test equipment and clear procedures for dealing with failed items.
When engineers work in schools, healthcare settings, communal residential buildings or other sensitive environments, vetting also matters. DBS-cleared engineers provide an additional reassurance where work brings them into contact with vulnerable people or areas with controlled access.
Qualified PAT engineers checklist
Use the following checks before booking a provider or approving a recurring testing programme.
1. Confirm relevant training and practical competence
Ask whether the engineer carrying out the work holds a recognised PAT testing qualification, such as City & Guilds training, and whether they undertake the inspections personally rather than simply operating under a company name. A qualification demonstrates a foundation of knowledge. Competence is shown by how that knowledge is used on site.
The engineer should understand the difference between equipment types, including Class I and Class II appliances, extension leads, chargers, IT equipment and equipment with accessible metalwork. They should also know when a visual inspection is sufficient and when an electrical test is required. Testing every item in exactly the same way is not automatically a sign of thoroughness.
2. Check the provider understands your duty of care
A reputable PAT service will not suggest that a sticker alone makes your business compliant. Labels are useful for identifying pass or fail status and the next review date, but they are only one part of a wider maintenance system.
Your provider should be able to explain what their inspection covers, what remains your responsibility and how the results support your electrical safety arrangements. This is particularly relevant where equipment is brought in by employees, hired for events, owned by tenants or used in shared areas. Responsibility can be more complicated than it first appears.
3. Establish how testing frequencies will be set
There is no universal legal requirement to test every portable appliance every year. A sensible frequency is based on risk. Equipment used on a construction site, in a workshop, kitchen or public area may need more frequent checking than a low-risk item in a lightly used office.
Ask how the provider will assess the environment, appliance type, usage level and previous results before recommending intervals. You should be wary of a fixed programme that ignores those differences, but equally wary of an arrangement with no documented reasoning. A risk-based schedule is easier to justify and often avoids unnecessary testing.
4. Ask about pre-job planning and site access
The quality of the visit is often decided before the engineer arrives. A professional provider will discuss your site layout, operating hours, number of assets, restricted rooms, security requirements and any equipment that cannot be taken out of use during normal working hours.
For larger, multi-floor or complex premises, an on-site survey may be appropriate. It allows the testing plan to account for access, safe working arrangements and potential disruption. If a free health and safety risk assessment is needed for the booked work, clarify this in advance so that both parties understand the controls in place.
Good planning is especially valuable in schools, care settings and busy offices. Testing can be arranged around lessons, appointments, shifts or quieter periods, rather than creating unnecessary interruption for staff and service users.
5. Verify the condition and suitability of test equipment
PAT instruments should be suitable for the tests being performed and maintained in line with the manufacturer’s requirements. Engineers should be able to explain how their equipment is checked and calibrated. Calibration alone does not create competence, but it helps give confidence that recorded measurements are reliable.
The engineer must also use appropriate methods for sensitive equipment. Some items, including certain IT equipment, medical-adjacent equipment or appliances with electronic controls, may require a different testing approach. An unsuitable test can cause problems, so competence includes knowing when to adapt the process and when further advice is needed.
6. Understand how failures are controlled
This is one of the most important checks. If an item fails inspection or testing, the engineer should identify it clearly, record the reason and make sure it cannot be returned to service by mistake. Depending on the agreed process, this may include a failed label, removal from use, isolation by the client or referral for repair.
Ask what happens next. Will minor faults be reported for your maintenance team? Will the provider advise whether repair, replacement or retesting is appropriate? A list of failures without a clear control process can leave a dangerous gap between finding a fault and preventing its use.
7. Review the records you will receive
Your test certificate and asset report should be easy to understand and practical to retain. At a minimum, records should identify the item, location or asset reference, test date, result, observed faults and retest date or recommended interval. For larger sites, serial numbers, appliance descriptions and barcodes can make future visits more efficient.
Do not treat the certificate as a document to file and forget. It should help you identify recurring faults, untested areas, missing equipment and appliances due for replacement. Accurate records also reduce the administrative burden when a site changes hands, a contract is reviewed or a safety audit takes place.
8. Check insurance, identification and conduct on site
Engineers should arrive with clear identification and work in a professional, orderly manner. Confirm that the provider holds appropriate insurance and can meet your contractor controls, including signing in, safeguarding rules, lone-working procedures or permit requirements where applicable.
For client-facing environments, conduct is not a minor detail. Engineers need to work carefully around staff and visitors, communicate when equipment must be unplugged and leave work areas tidy. A low-disruption service is built on preparation and respect for how your premises operate.
Questions worth asking before you approve the work
A short conversation can reveal whether a provider is offering a considered service or simply a volume-based testing visit. Ask who will carry out the work, what qualification and experience they have, how they set retest periods, how failed items are made safe, and what reports you will receive afterwards.
It is also sensible to ask whether the quoted price covers all equipment types, labels, certificates and reports. The cheapest quote can become poor value if it excludes key records, charges unexpectedly for access issues or leaves your team to resolve unclear failures without guidance.
Janus Safety Solutions plans PAT testing around the needs of each site, using City & Guilds qualified and DBS-cleared engineers to support dependable, compliant work with minimal disruption.
Make PAT testing part of a wider safety routine
PAT testing works best alongside routine user checks, planned maintenance and a clear process for reporting damaged equipment. Staff do not need to be electrical specialists to spot a split cable, loose plug, damaged casing, signs of overheating or an appliance that has been dropped. They do need to know what to do next and to feel confident removing faulty equipment from use.
Keep a simple record of new equipment, repairs, relocated appliances and items removed from service between testing visits. This gives your engineer a more accurate starting point and helps ensure that the next programme reflects the equipment actually in use.
The right engineer does more than produce pass labels. They provide a controlled, documented process that helps you make sound decisions about electrical safety, protect the people on your premises and keep normal operations moving.