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Guide · England

EICR codes C1, C2, C3 and FI, in plain English.

By the SB Electrical Group engineering team · Last reviewed · A summary, not legal advice

Scorched socket terminal, the kind of defect coded C1 or C2 on an EICR
The short answerOn an EICR, C1 means danger is present and immediate action is needed; C2 means potentially dangerous and urgent action is needed; C3 means improvement is recommended; and FI means further investigation is needed without delay. Any C1, C2 or FI makes the report unsatisfactory. C3 alone does not.

The four codes

CodeMeaningReport outcome
C1Danger present. Risk of injury. Immediate remedial action required.Unsatisfactory
C2Potentially dangerous. Urgent remedial action required.Unsatisfactory
FIFurther investigation required without delay.Unsatisfactory
C3Improvement recommended.Does not affect the outcome

C1: danger present

Something could hurt someone now, for example live parts that can be touched through a broken accessory. The inspector should make it safe straight away, usually by isolating the circuit, and tell the person responsible. Leaving a C1 in service is not an option.

C2: potentially dangerous

Not dangerous this minute, but could become dangerous if a fault occurs. Typical examples include no effective earthing, signs of overheating or scorching at a socket or connection, and missing main protective bonding to incoming gas or water pipes. C2 items should be put right urgently. For landlords, that means within 28 days at most.

FI: further investigation

The inspector found something that could not be fully assessed during the inspection, such as a circuit that could not be traced or a test result that points to a hidden problem. It must be investigated without delay, and the investigation may turn up a C1 or C2.

The installation does not meet the current edition of BS 7671 in some way, but it is not dangerous. Older installations built to earlier regulations often carry C3 codes, for example a lack of surge protection. C3 items do not make a report unsatisfactory, and landlords are not required to fix them under the 2020 regulations.

What to do with an unsatisfactory EICR

  1. Ask for a fixed price for each C1, C2 and FI observation, not a lump sum.
  2. Have the work done by a qualified electrician, who will issue a Minor Works Certificate or Electrical Installation Certificate.
  3. Landlords must send written confirmation of completion to the tenant and the local authority within 28 days of the work being finished.

We price every observation line by line before any work starts. See how we put an unsatisfactory EICR right in nine days in our Salford rental case study.

Questions

Does a C3 fail an EICR?

No. C3 means improvement recommended. A report with only C3 observations is still satisfactory.

Is C2 a fail on an EICR?

Yes. Any C2 observation makes the EICR unsatisfactory, and it needs urgent remedial work. For rented homes in England that must be done within 28 days.

What does FI mean on an EICR?

Further investigation required without delay. The inspector could not fully assess something and it must be investigated promptly. An FI makes the report unsatisfactory.

Who can fix EICR remedial work?

Any qualified and competent electrician, not necessarily the one who did the inspection. They should certificate the work with a Minor Works Certificate or Electrical Installation Certificate.

Need it done? Call 07703 295654, answered 24/7, or request a free compliance review for a portfolio.

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