How to Read and Understand Your EICR Certificate

Understanding Your EICR Document

An EICR certificate can look intimidating — multiple pages of technical data, test results, and classification codes. But every section serves a specific purpose, and understanding each one helps you make informed decisions about your property's electrical safety.

This guide walks through every section of a standard EICR certificate in plain English. By the end, you'll know exactly what each number means and what action (if any) you need to take.

Inspector and Installation Details

The first page confirms who carried out the inspection, their registration details, and basic information about the property. Verify these details carefully.

• Inspector's name and NAPIT / NICEIC registration number — verify on the scheme operator's website
• Company name, address, and contact details
• Property address and client name (landlord or homeowner)
• Date of inspection and proposed date of next inspection
• Reason for inspection (routine, change of tenancy, change of use, etc.)
• Maximum demand calculation showing total electrical load

Extent and Limitations

This section defines what was inspected and what could not be inspected. Pay close attention — any limitation may result in an FI code or incomplete assessment.

• Extent: Lists every circuit, distribution board, and accessory that was tested
• Limitations: Notes any areas that could not be accessed (e.g. behind fitted furniture, under floorboards)
• Agreed limitations: Any restrictions agreed with the client before inspection
• If limitations are excessive, consider arranging a follow-up visit for full access

The Schedule of Test Results

This is the technical core of the EICR. Each row represents one circuit with measured values for continuity, insulation resistance, polarity, and RCD function.

• Circuit description: Identifies what the circuit supplies (e.g. 'Upstairs lighting', 'Kitchen sockets')
• Continuity of protective conductors: Should be near zero ohms. High values indicate loose or corroded connections.
• Insulation resistance: Should be at least 1.0 MΩ (megohm). Lower values suggest moisture or cable damage.
• Polarity: 'OK' means correct at every point tested. 'Reverse' or 'Missing' indicates a serious fault.
• RCD functionality: Shows trip time in milliseconds. Should be ≤300ms for 30mA RCDs at rated current.
• Circuit breaker rating: Confirms the protective device matches the cable size

Observations and Recommendations

This section lists every defect found, assigned a classification code (C1, C2, C3, FI), with a description and photographic evidence. This is where you find the actionable items.

• Each observation includes the classification code and a plain-English description
• Photographs are embedded showing the exact location and nature of the defect
• The inspector may include remedial recommendations with estimated costs
• C1 and C2 items must be addressed. C3 items are advisory. FI items require further investigation.
• The overall assessment (satisfactory or unsatisfactory) appears at the end of this section

What to Do With Your EICR

Once you understand your EICR, take the following steps to maintain compliance and protect your tenants.

• File the original PDF securely (digital and physical copies)
• Provide a copy to existing tenants within 28 days of the inspection
• Provide a copy to new tenants before they move in
• Provide a copy to the local authority within 7 days if requested
• Set a calendar reminder for the next inspection due date
• If unsatisfactory, obtain remedial quotes and schedule work within the 28-day deadline