Why does an EICR fail

What Fails an EICR in Cambridge? Common Issues Explained

If you’re booking an EICR in Cambridge, one of the biggest concerns is whether your property will pass or fail.

An EICR (Electrical Installation Condition Report) is designed to identify safety issues — not to catch you out — but many properties, especially older ones, will have at least some observations.

If you’re working with an experienced electrician Cambridge homeowners trust, you’ll get a clear explanation of any issues and how to resolve them.


What Does It Mean to Fail an EICR?

An EICR is marked as unsatisfactory (fail) if any of the following are found:

  • C1 (Danger present) – Immediate risk of injury
  • C2 (Potentially dangerous) – Needs urgent attention
  • FI (Further investigation required) – Something isn’t right

Even one C2 or FI will result in a fail.


Most Common Reasons Properties Fail an EICR

Here are the issues we regularly find during an electrical inspection Cambridge properties require:


1. No RCD Protection

This is one of the most common failures.

RCDs (Residual Current Devices) protect against electric shock. If circuits — especially those supplying sockets or bathrooms — don’t have RCD protection, this is typically coded as C2.


2. Old or Unsafe Consumer Units

Older fuse boards (especially plastic ones or those with rewireable fuses) often fail due to:

  • Lack of modern protection
  • No RCBOs or RCDs
  • Poor enclosure safety

Upgrading the consumer unit is often recommended to bring the installation up to current standards.


3. No Earthing or Bonding

Proper earthing and bonding are critical for safety.

Common issues include:

  • Missing main earth connection
  • No bonding to gas or water
  • Undersized bonding conductors

These are usually coded as C2 and must be rectified.


4. Damaged or Poor Wiring

We often find:

  • Cables joined incorrectly (e.g. taped connections)
  • Damaged insulation
  • DIY alterations

These can be dangerous and are often coded as C1 or C2 depending on severity.


5. Overloaded Circuits

Older properties may have too many sockets or appliances on a single circuit, leading to overheating risks.


6. No RCD Protection for Bathrooms or Outdoor Circuits

Circuits in higher-risk areas like bathrooms must have proper protection. Lack of this is a common reason for an unsatisfactory report.


7. Faulty Accessories

Things like:

  • Broken sockets
  • Damaged switches
  • Overheating connections

These are simple to fix but still need to be addressed.


What Doesn’t Fail an EICR? (C3 Observations)

Not everything results in a fail.

C3 (Improvement recommended) issues include:

  • No surge protection device (SPD)
  • Older but still functional consumer units
  • Minor labelling issues

These are advisory only and won’t result in an unsatisfactory report.


Can You Still Rent a Property If It Fails?

No — not until the issues are resolved.

If your property receives a landlord electrical certificate marked as unsatisfactory, you must:

  • Carry out remedial work within 28 days
  • Provide confirmation once completed

How to Avoid Failing an EICR

The best way to avoid issues is to be proactive.

Before booking your EICR Cambridge inspection:

  • Check your consumer unit type
  • Look for obvious damage to sockets or wiring
  • Ensure access to the fuse board is clear

Or simply get advice from a qualified electrician beforehand.


What Happens If Your Property Fails?

Don’t worry — most issues are fixable.

After the inspection, you’ll receive:

  • A clear report explaining the issues
  • A quote for any remedial work
  • Advice on priority and next steps

Working with a trusted NICEIC electrician ensures everything is brought up to standard safely and efficiently.


Book an EICR in Cambridge

If you need a reliable electrical safety check, Titan Electrical Ltd provides:

  • Honest, straightforward reports
  • Clear pricing for any remedial work
  • Fast turnaround across Cambridge and surrounding villages

Get in touch today to book your EICR.

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