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EICR codes explained: Everything you need to know

11 May 2023

Are you a property owner or facilities manager with an upcoming Electrical Installation Condition Report (EICR) scheduled to take place and aren’t sure what to expect when it comes to the results of the report? If so, you aren’t alone. 

Electrical Installation Condition Reports (EICR) play a critical role in ensuring the safety and compliance of electrical infrastructure in both domestic and commercial properties. During an EICR, an Electrical Engineer will inspect and test your electrical systems to identify and mitigate any potential risks to your people and equipment, potentially preventing a whole host of costly accidents and injuries.  

Read our guide below to learn more about EICR codes and what they mean for you and your property!  

What is an EICR report?   

An EICR report is one of the most efficient ways to test the safety of your electrical systems.  

When an EICR test is being carried out, the Electrical Engineer will conduct a series of tests on powered-down electrical systems, including a: 

  • Visual Inspection 
  • Live test 
  • Dead test 
  • Further examination, if necessary 

With these techniques, the electrician or electrical engineer can find any issues or faults, and gauge whether the electrical installation is safe for continued use.  

EICR reports are also used to determine: 

  • The integrity of an installation 
  • Whether there’s any damage to sockets and switches 
  • That the premises is up to date and compliant with the latest regulations 

Who needs an EICR Certificate?

It’s a statutory requirement that commercial properties and businesses have their electrical systems checked, as stated by the Health and Safety at Work Act 1974 and the Electricity at Work Regulations 1989.

If you’re a duty holder or facilities manager for a commercial or SME industrial premises, keeping your electrical installations safe and compliant falls on you. EICR inspection frequencies vary between 1 – 5 years, depending on the property and the level of risk involved. For example, swimming pools need to be tested more frequently than an office building.

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EICR codes, what do they mean?

Following an electrical inspection, an EICR report will be provided, in which you’ll receive information on the condition of your electrical systems, and whether your electrical infrastructure is satisfactory or unsatisfactory for further use.

For buildings that are determined to be unsatisfactory, the EICR report will highlight any electrical faults found, along with the level of risk posed. There are four EICR faults you must be aware of:

EICR C1: There is a danger present, risk of injury and immediate remedial action required

EICR C2: There is a potential danger present and urgent remedial work is required

EICR C3: Improvement is recommended

EICR F1: Further investigation required without delay



Receiving a C1 rating following your EICR test means that there’s a high risk of injury to anyone who uses the installation, and that immediate remedial action is required. An example of a C1 code would be damage to the installation, poorly modified enclosures or removed maintenance panels that leaves live conductors exposed and accessible.

As well as this, incorrect polarity would also cause you to get a code C1 as it may lead to conductive parts that aren’t normally expected to be live, becoming live. In cases of C1 classification, it’s highly recommended that you don’t use your electrical system until that fault has been fixed.


While less severe than a C1 rating, a C2 still means that something on your installation has the potential to be dangerous and cause injury to anyone in the vicinity. This could be anything from a lack of reliable earthing to an RCD that does not trip when tested. If these aren’t remedied, over time they could worsen and lead to a shock risk, which is why all C2 EICR codes require urgent remedial action.


Receiving a C3 EICR rating means that the electrician has spotted things that need improving for your electrical installation, such as out-of-date wiring that doesn’t meet the latest regulations but isn’t a risk to you or your team.

With this, while EICR certificates can still be satisfactory even when C3 level issues are found, it’s advised to have all C3 issues rectified to improve the safety of your electrical installation, as well as to avoid any issues snowballing and becoming more expensive to rectify down the line.


Lastly, you could receive an FI, which stands for Further Investigation. This is usually when the electrician or electrical engineer carrying out the EICR notices something that doesn’t necessarily breach the B2 7671 standards, like a circuit that hasn’t been verified at the time of testing.

As FI codes have the potential to class your electrical installation as unsatisfactory, it means that in all cases of an FI certification, further investigation is needed straight away. This is because it would be irresponsible of the electrical engineer to state the installation is satisfactory overall.

EICR codes can be complicated or unclear if you aren’t sure how they apply to your business or most recent inspection, but they don’t have to be.

Following an electrical inspection, our team of specialists at BES Group will discuss their findings and highlight any next steps to ensure complete electrical compliance at your site. Our accredited team of electrical engineers can also provide follow-up corrective services with minimal disruption to your daily operations.

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Looking to minimise operational downtime?  

Whilst EICR reports offer a comprehensive overview of your electrical installations, this option may be unsuitable for commercial properties that cannot risk any downtime, including manufacturing facilities and factories.  

As one of the only four providers in the UK, our accredited team of TEGG specialists offer comprehensive electrical inspections without the need for costly shutdowns at your site. At BES Group Electrical, we’ll tailor our solutions to suit your unique requirements, to ensure comprehensive compliance with minimal disruption to the daily operations. 

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BES Group Electrical Solutions

At BES Group Electrical, we’re proud to deliver the highest quality Electrical Installation Condition Reports to help ensure our customers’ safety and legal compliance. In fact, we’re trusted by over 35,000 customers to keep their properties safe, compliant and risk-free. 

Our accredited team of engineers offer a flexible approach to meet your electrical safety requirements no matter your location or downtime preferences.  Safety is our priority, that’s why we provide end-to-end electrical inspection services to ensure electrical infrastructure compliance. Our electrical solutions include EICR, TEGG, PAT Tests and a range of other electrical solutions for guaranteed peace of mind.

Learn how we can help you with your EICR requirements Discover all our electrical solutions