What Do C1, C2 and C3 Codes Mean on an EICR?
If you have recently received an Electrical Installation Condition Report (EICR), you may notice codes such as C1, C2 or C3 listed against certain observations.
These codes indicate the severity of issues identified during inspection and determine whether the report is classified as satisfactory or unsatisfactory.
If you require a professional Electrical Installation Condition Report in Altrincham, we provide full inspection, testing and clear written reports.
What Is an EICR?
An EICR is a formal inspection and test of a property’s fixed electrical installation. It assesses safety, condition and compliance with current BS 7671 Wiring Regulations.
The report identifies any defects, deterioration or non-compliance and assigns classification codes based on risk level.
What Does C1 Mean?
C1 – Danger Present.
This classification indicates an immediate risk of injury. Urgent remedial action is required.
Examples may include:
- Exposed live conductors
- Severe overheating
- Accessible parts that present shock risk
If a C1 observation is recorded, the overall EICR outcome will be unsatisfactory.
What Does C2 Mean?
C2 – Potentially Dangerous.
There is no immediate threat, but the issue could become hazardous if left unresolved.
Common C2 observations may include:
- Absence of RCD protection where required
- Inadequate earthing or bonding
- Damaged sockets or switches
C2 observations also result in an unsatisfactory report.
What Does C3 Mean?
C3 – Improvement Recommended.
This indicates that the installation is not unsafe, but it does not reflect current best practice.
Examples may include:
- Older consumer units that remain serviceable
- Absence of surge protection devices
C3 observations do not cause the report to fail.
What Does FI Mean?
FI – Further Investigation Required.
This means the inspector could not fully verify part of the installation and additional assessment is necessary.
An unresolved FI will normally result in an unsatisfactory outcome until the issue is clarified.
What Makes an EICR Unsatisfactory?
An EICR is deemed unsatisfactory if it contains:
- One or more C1 observations
- One or more C2 observations
- An FI that remains unresolved
In rental properties, remedial work must be completed within the required timeframe to comply with regulations.
Do All C3 Issues Need to Be Fixed?
C3 items are advisory rather than mandatory. However, addressing them may improve safety and future-proof the installation.
If your report recommends improvements, we can advise on proportionate remedial work following your EICR in Altrincham.
Need an EICR in Altrincham?
We provide professional Electrical Installation Condition Reports in Altrincham, including clear explanations of all C1, C2 and C3 observations and practical guidance on next steps.