A laptop charger with a damaged cable, a portable heater brought in during winter, or a machine with an untested extension lead can all create the same problem: an electrical hazard that was easy to miss until it caused an incident. DGUV V3 equipment checks give employers in Germany a structured way to find and address these risks before employees, customers or inspectors are affected.
For international employers, the terminology can be confusing. You may hear colleagues refer to an E-check, PAT testing or electrical inspection. In the German workplace safety system, DGUV Regulation 3 sets out key duties for preventing electrical accidents involving electrical installations and equipment. The employer remains responsible for ensuring checks take place, even where a qualified external provider carries them out.
What DGUV V3 equipment checks cover
DGUV V3 applies to electrical installations and electrical equipment used at work. That includes the obvious items – fixed distribution boards, sockets, machinery and production equipment – as well as portable equipment such as monitors, kettles, power supplies, chargers, printers and extension leads.
The precise scope depends on the workplace. A serviced office with twenty workstations has a different risk profile from a shop, warehouse, laboratory or manufacturing site. Equipment used outdoors, in damp areas, on construction sites or under heavy mechanical strain generally needs closer attention than a desktop monitor in a low-risk office.
A proper check normally combines visual examination, electrical measurements and a functional test where appropriate. The objective is not simply to attach a sticker. It is to establish whether equipment can be used safely, identify defects, prevent unauthorised use of faulty items and create evidence that the employer has met their duty of care.
Why testing intervals are not one-size-fits-all
Employers often ask for the legally required annual interval. In reality, there is no single annual rule that fits every device and every site. Inspection periods should be set through a documented risk assessment, taking account of the type of equipment, working environment, frequency of use, foreseeable damage and previous test results.
As a practical example, a portable appliance in a busy workshop may need more frequent testing than similar equipment in a controlled office. Conversely, testing every low-risk item at the same short interval can create unnecessary disruption and cost without improving safety. The right programme is proportionate, documented and reviewed when circumstances change.
This is where external expertise is particularly useful. A qualified tester can help establish sensible test cycles, but management should ensure that these cycles are reflected in the company’s wider risk assessment and safety arrangements. A test register copied from another site is rarely enough.
Who may carry out the checks?
DGUV V3 testing must be undertaken by an electrically qualified person, or by a person working under the direction and supervision of an electrically qualified person. In German practice, this is often referred to as an Elektrofachkraft. The person must have the relevant technical knowledge, practical experience and access to suitable testing equipment for the work involved.
This requirement matters because a visual check alone does not reveal every fault. Testing protective conductors, insulation resistance and other relevant electrical safety functions requires correct methods, calibrated equipment and a competent interpretation of results.
Employers should not assume that any maintenance contractor, office manager or technically minded employee can take on the role. The competence requirement must match the equipment and test task. For complex fixed installations or specialist machinery, the necessary expertise may be significantly higher than for routine portable appliances.
What good documentation looks like
If a Berufsgenossenschaft, insurer, customer auditor or authority asks for evidence, a drawer full of stickers will not provide a complete answer. Your records should show what was tested, when it was tested, who carried it out, the result and the next due date. They should also make clear how defects were handled.
A useful DGUV V3 test record typically identifies the equipment or installation, its location, the applied test procedure, measured values where relevant, the tester’s identity and the assessment of safe operation. Keep records in a format that your responsible managers can retrieve quickly. Digital registers are often easier to maintain across several sites, but paper documentation can also work if it is complete and controlled.
Defective equipment needs immediate, practical action. Depending on the issue, that may mean removing it from service, clearly labelling it, arranging repair and retesting it before reuse, or replacing it. Leaving a failed appliance plugged in because a replacement is inconvenient undermines the entire control process.
A practical three-step approach
1. Build an accurate equipment picture
Start with a walk-through of the site. Identify fixed installations, portable appliances, extension leads, chargers and employer-owned equipment that staff use outside the main office. Include equipment supplied by the business at home-working locations where your risk assessment indicates this is relevant.
Also decide how you will manage personal electrical items. A blanket ban is not always necessary, but unmanaged personal appliances can create gaps in your safety arrangements. A clear policy may require approval and testing before items such as heaters, fans or coffee machines are used on site.
2. Assess risk and schedule the checks
Group equipment by environment and exposure, then set testing intervals that can be justified. Consider whether items are frequently moved, exposed to liquids, used by the public or subject to wear. Previous failure rates are valuable evidence: repeated cable damage in one area suggests that the interval, equipment choice or working practice needs review.
Coordinate the schedule with operations. Testing can often be planned outside peak hours or by department, reducing disruption while ensuring no equipment is missed. New equipment, repaired equipment and relocated equipment should be brought into the register rather than waiting for the next general round.
3. Test, correct and retain evidence
Use suitably qualified personnel to conduct the inspections and tests. Review the findings, isolate unsafe equipment without delay and assign ownership for corrective actions. Finally, store the test reports and update the equipment register so that the next inspection cycle is clear.
This final step is where many otherwise well-run businesses lose control. A test report may identify several minor defects, but unless someone owns the repair or replacement, those defects can remain open for months. Treat electrical safety findings as actions to close, not merely information to file.
Common mistakes that create compliance gaps
The most common error is treating DGUV V3 as a purchase rather than a management process. Booking a tester once a year is not enough if the equipment list is incomplete, failed items remain available or the organisation cannot show why its intervals are appropriate.
Another issue is overlooking changes. A start-up may begin in a small office and quickly add meeting rooms, a workshop, retail locations or a warehouse. The electrical risk assessment and testing plan must grow with the operation. The same applies after a move, refurbishment, new production line or acquisition.
Home working requires judgement rather than assumptions. Employers must protect employees working remotely, but the scope and practical implementation of electrical checks depend on the work equipment provided, the nature of the work and the assessed risk. Clear employee guidance, appropriate equipment procurement and a documented approach are usually more effective than trying to apply an identical office-testing routine to every private home.
When to seek external support
External support is valuable when you lack an internal electrically qualified person, operate across multiple locations, have received concerns from a Berufsgenossenschaft or need to put order into incomplete records quickly. It can also help when DGUV V3 findings need to connect with broader obligations, including risk assessments, employee instruction, fire protection and occupational safety support.
Captain Safety can coordinate DGUV-related checks as part of a wider German health and safety programme, helping employers turn testing results into tracked corrective actions rather than another compliance file. For businesses new to Germany, that joined-up approach can remove uncertainty while keeping operational responsibility clear.
Electrical equipment becomes safer through consistent decisions: know what is in use, test it at a risk-based interval, take faulty items out of circulation and keep evidence that stands up to scrutiny. That is a practical piece of protection for your people and a calmer position when an inspection arrives.