It works—but is it safe?

It is not a test of whether everything works

Many people expect an EICR to involve an electrician walking around switching lights and appliances on and off. That is not really what it is for.

If a lamp has blown, it may simply need replacing. If an extractor fan has stopped turning, the appliance may need repairing. An EICR is not primarily an appliance-performance check. It is concerned with the electrical installation supplying those things: the cables, connections, earthing, bonding, consumer unit and protective devices that should keep people and property safe.

The electrician is looking and testing for questions such as:

• Are the conductors still in a suitable condition for continued use?
• Are connections sound, or are there signs of heat, damage or deterioration?
• Is the earthing and bonding effective?
• Are the circuit breakers, fuses and RCDs suitable—and will they provide the necessary protection if something goes wrong?
• Have unsafe alterations or additions been made over the years?
• Is there anything that could create a risk of electric shock, burns or fire?

That last point is crucial. The purpose of an EICR is not merely to establish whether electricity reaches a socket. It is to assess whether the installation is likely to protect you when a fault occurs.

A circuit may continue to work even when an important safety conductor is broken. A poor connection may supply an appliance while gradually overheating. An unsuitable protective device may sit quietly for years because it has never faced the fault it was supposed to clear. The fact that nothing has happened yet is not proof that nothing can happen.

Why inspect something hidden away?

Most of your electrical installation is out of sight. Cables run beneath floors, above ceilings and inside walls. Connections sit behind accessories and inside consumer units. Unlike a leaking pipe or a cracked window, deterioration may not be visible during everyday life.

Electrical installations also change. A house that was wired properly many years ago may since have had a kitchen altered, an extension added, sockets moved or DIY repairs carried out. Sometimes each individual change appears small, but together they may leave an installation very different from the one originally designed.

No inspection can promise that a future fault will never occur. An EICR is an assessment of the installation’s condition at the time of inspection, within its stated extent and limitations. What it does provide is evidence: careful inspection, electrical testing and a clear record of what was found. That is far more meaningful than assuming everything is safe because the lights still come on.

Must an older installation meet every new rule?

This is where the subject becomes more nuanced.

An EICR is assessed using the current edition of the UK Wiring Regulations, BS 7671. However, that does not mean every older installation must be rebuilt to the latest specification, nor does every difference from today’s regulations make a home unsafe.

An installation designed to an earlier edition may still be perfectly suitable for continued service. A competent inspector must decide whether an older feature simply reflects the standards of its time, whether improvement would be sensible, or whether the absence of modern protection now creates a real or potential danger. Age alone is not a fault—but age is not proof of safety either.

This also explains something that can otherwise feel contradictory. Your home may receive a satisfactory EICR, yet an electrician may later say that some upgrading is needed before adding new sockets or carrying out other alterations. A satisfactory report does not declare the installation identical to a brand-new one. It says that, within the scope and limitations of that inspection, it is considered satisfactory for continued service until the recommended date for reinspection.

Any new electrical work must meet the regulations applicable to that work, and the existing installation must be suitable to support the addition. Sometimes that means additional protection or other improvements are needed before the new work can be certified properly.

What do the EICR codes mean?

The report should not leave you with a vague statement that the electrics are “old” or “poor.” Findings are classified so that you can understand their importance:

A C1 or C2 results in an unsatisfactory report. Under BS 7671 Amendment 4:2026, FI is advisory and does not, on its own, make the report unsatisfactory—but the suggested investigation should not be ignored. C3 observations alone do not make a report unsatisfactory either; an installation can be satisfactory while still carrying recommendations for improvement.

That distinction matters. An EICR should neither conceal danger nor turn every older feature into a crisis.

• C1

  Danger presentthere is an immediate risk of injury and action is required straight away.

• C2

  Potentially dangerousthere may not be immediate danger under normal conditions, but a fault or foreseeable event could make the situation dangerous. Urgent remedial action is required.

• C3

  Improvement recommendedthe item is not considered immediately or potentially dangerous, but an improvement would enhance safety.

• FI

  Further investigation advisedtesting has revealed a possible safety issue that cannot yet be properly classified without further investigation.

Not all EICRs are equally useful

Although the format and testing procedures are intended to be standardised, the quality of reports can still vary considerably. Inspection and testing require knowledge, experience, judgement and enough time to do the work properly.

At one extreme is the superficial inspection: little is tested, almost nothing is uncovered and the installation is passed with minimal explanation. A satisfactory result may feel reassuring, but reassurance has little value if it has not been earned.

Imagine taking your car for an MOT and watching the mechanic glance at it through the garage window before printing the pass certificate. You might like the result, but would you trust the inspection?

At the other extreme is an unduly severe report in which every sign of age is presented as a dangerous failure, or the report begins to feel more like a quotation for work than an impartial account of the installation. That does not help the customer either.

A good inspector does not pass everything, and does not condemn everything. The purpose is to describe the actual condition of the installation clearly, apply the classifications fairly and explain the findings in language the customer can understand. Photographs, meaningful observations and properly recorded test results all help you make an informed decision about what needs urgent attention, what could be improved and what can reasonably remain in service.

That is why it is worth choosing a reputable, established and appropriately registered electrician—not simply the quickest inspection or the cheapest piece of paper.

Do I need one—and how can I find out?

For an owner-occupied home, an EICR is commonly recommended at least every ten years, and when the occupancy changes. The electrician may recommend a shorter interval because of the age, condition, use or circumstances of the installation, so the date shown on an existing report should always be followed.

The first place to look is your consumer unit—what many people still call the fuse box. You may find a label showing when the electrical installation was completed and when its next inspection is recommended. If an EICR has been carried out since then, there should normally be a periodic-inspection label showing the date of the inspection and the recommended date of the next one.

Even if the original paperwork has been misplaced, that label can give you an important clue. It is not a replacement for the report itself, but it can tell you whether the installation appears to have been inspected recently or whether the recommended date has already passed.

If your home—or, more precisely, its present electrical installation—is more than ten years old and you cannot find a report, a label or any reliable evidence that it has been inspected within the last ten years, you should treat an EICR as due. The house itself may be much older but have been rewired recently, which is why the age and records of the installation matter more than the date on which the house was built. If you simply do not know, having it checked is far better than continuing indefinitely on an assumption.

An EICR is also particularly valuable when buying a property. A general building survey may say very little about the true condition of the fixed wiring. Having it tested before committing to a purchase can reveal safety issues and likely remedial work that would otherwise remain hidden. It is equally useful if you have lived in your home for many years, cannot remember it ever being inspected, or have concerns about previous alterations.

Clarity, not fear

Your home’s electrical installation quietly manages a considerable amount of power every day. We rely on it for heating, cooking, lighting, communication, entertainment and, increasingly, vehicle charging. It deserves the same sensible attention we readily give to a boiler or a car.

An EICR is not about frightening homeowners, and it should not be used as an automatic excuse to sell a new consumer unit or a rewire. It is about replacing assumption with evidence.

If everything is in good condition, you gain genuine peace of mind. If something is wrong, you gain the opportunity to deal with it before a hidden weakness becomes an accident. Either outcome is more useful than simply saying, “It has always worked.”

If you do not know when your home’s electrics were last properly inspected, Powered Electrical can carry out a thorough EICR, explain the findings clearly and help you decide what—if anything—needs to happen next.

Ogi Mihaylov — Director, Powered Electrical