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EICR Codes Explained – The Meaning of C1, C2 and C3

Posted in
Date
09/02/2022
eicr codes explained

An Electrical Installation Condition Report (EICR) is a reliable way to ensure your electrical system is safe and fully functional.

A qualified and competent contractor will check every aspect of your installation in line with the BS7671 standard and highlight any issues in their report.

Those issues will be categorised using the EICR codes c1, c2, c3 and FI. In this post, we’ll outline the meaning of C1, C2, C3 and FI to give you a better understanding of your EICR certificate.

EICR C1 meaning

Starting with the most serious code, EICR C1 indicates that danger is present on your electrical installation. The danger poses a risk of injury to anyone using the installation, meaning that immediate remedial action is required.

Examples of C1 faults:

  • Exposed live wires due to damage cabling or missing covers
  • Overheating connections that could cause electrical fires
  • Broken or missing earthing that increases the risk of electric shock
  • Incorrect fuse ratings leading to dangerously overloaded circuits

When a C1 fault is identified, the electrician will often take immediate action to make the installation safe, such as isolating the affected circuit. It’s recommended that you don’t use your electrical system until action has been taken. Failure to act on a C1 code could result in severe harm, electrical fires legal liability.

EICR C2 meaning

Taking one step down, EICR C2 means that something on your installation is potentially dangerous. While the issue may not yet pose a direct risk to your premises, staff or customers, it could become a hazard if left unattended.

Examples of C2 faults:

  • Lack of proper earthing or bonding, which could cause shock hazards
  • Damaged insulation that might lead to arcing or short circuits
  • Corrosion on electrical connections which increases the risk of failure
  • Sockets too close to water sources, creating a potential shock risk

As a result, C2 EICR codes require urgent remedial action. You may be able to continue using your system in the meantime, but you should arrange for repairs to be made as soon as you can. Like a C1 code, any issues categorised as C2 will mean the EICR is unsatisfactory until action is taken.

EICR C3 meaning

Unlike C1 and C2 codes, C3 faults do not indicate immediate or potential danger. Instead, they highlight areas where improvements could be made to enhance safety and compliance.

Examples of C3 faults

  • Older wiring that doesn’t meet modern standards but is still safe
  • Fuse boards without RCD (Residual Current Device) protection, which is now recommended
  • Minor wear and tear on switches or sockets
  • Missing labelling on distribution boards, making maintenance harder

To be clear, in these examples no danger is present and there is no typical sequence of events that could lead to someone accessing live wires. As a result, EICR certificates can still be satisfactory when C3 issues are identified.

All that said, it’s best to have C3 issues rectified to improve the safety of your electrical installation and avoid more expensive issues developing over time.

What about FI? Further Investigation Required

The FI (Further Investigation) code is used when an electrician identifies a concern that requires deeper assessment, but doesn’t necessarily breach BS 7671 standards. Unlike the codes we’ve already mentioned, FI does not specify a direct level of danger – instead it signals that there’s not enough information available to make a full judgement.

Examples of FI issues:

  • Circuits that cannot be fully tested due to access restrictions
  • Voltage irregularities that need monitoring over time
  • Suspected hidden faults behind walls or within conduit systems
  • Unusual readings from insulation resistance tests

FI issues must be investigated promptly. If they are severe or numerous, they may lead to an unsatisfactory EICR, requiring resolution before a pass can be given.

What happens after you receive your EICR

Once your EICR has been completed, you’ll receive a detailed report listing all findings, including any C1, C2, C3 or FI codes. But what should you do next?

If your EICR is satisfactory

A satisfactory EICR means no C1 or C2 faults were detected. However, if C3 recommendations were listed, you may still want to consider improvements to keep your system up to date and avoid costly problems in future.

If your EICR is unsatisfactory

If C1, C2 or multiple FI issues have been found, your EICR will be deemed unsatisfactory, meaning remedial action is required before you can be considered compliant.

  • Step 1 – Prioritise C1 and C2 faults. Work with a qualified electrician to resolve dangerous issues immediately.
  • Step 2 – Investigate FI issues. Arrange additional tests to get to the bottom of any uncertain areas of concern.
  • Step 3 – Consider C3 improvements. While not required, these can help future-proof your installation and save money in the long run.

Once all the faults have been addressed, you may need either a partial or full re-test to obtain a satisfactory EICR.

Why regular EICRs are essential for your business

Many businesses only think about EICRs when a legal requirement or issue arises. However, the truth is that regular inspections have long-term benefits, including:

Compliance with UK regulations

The Electricity at Work Regulations 1989 require businesses to maintain electrical systems in a safe condition. Regular EICRs help you prove compliance, and demonstrate your commitment to maintaining a safe work environment.

Reduced insurance risk

Most commercial insurance policies require proof of regular electrical inspections. Without an up-to-date EICR, claims may be invalidated if you suffer an electrical fault in your workplace.

Preventing business disruption

A faulty electrical system can lead to power failures, costly downtime and even fire hazards. Proactive inspections help to catch issues early, reducing the risk of the worst ever happening to you.

Protecting employees and customers

Regular electrical checks are hugely important for preventing accidents and keeping your employees and customers safe. Faulty systems can cause electrical shocks, fire hazards and data loss.

By keeping up with EICRs, businesses reduce risks, protect assets and avoid costly emergency repairs.

EICR codes made clear and simple

At Volta Compliance, we aim to take the hassle and confusion out of EICR codes, their meaning, and the implications for your business. After a comprehensive EICR inspection, our experienced team will explain everything we find in plain English along with what you need to do to stay safe and compliant.

If you would like to arrange an EICR test for your Yorkshire business, don’t hesitate to contact us today on info@voltacompliance.com or 0113 436 0402.

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Richard Carr Volta Compliance
Richard Carr
Managing Director
Richard is the Director of Volta Compliance. He is a fully qualified approved electrician graded with the JIB. Richard has over 20 years electrical experience working on commercial and industrial installations.

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