Conducting an Electrical Installation Condition Report (EICR) is a detailed process carried out by a qualified electrician or electrical inspector. Here’s a step-by-step guide on how to prepare an EICR:

1. Preparation:

• Gather necessary equipment: This includes a multimeter, insulation resistance tester, RCD tester, and any other necessary tools.
• Review the history: If available, look at previous inspection reports to understand any recurring issues or areas that might need special attention.

2. Visual Inspection:

• Check for any visible signs of damage to sockets, switches, and light fittings.
• Inspect the consumer unit for the correct type and rating of fuses/circuit breakers.
• Look for any signs of overheating or burns on electrical equipment.

3. Circuit Identification:

• Verify and label all circuits on the consumer unit.
• Ensure that the circuit diagrams or charts are available and accurate.

4. Circuit Testing:

• Conduct dead testing, including continuity of conductors, continuity of bonding, polarity, and insulation resistance tests.
• Perform live testing, which includes earth fault loop impedance testing and RCD trip time tests.

5. Load Testing (if applicable):

• Check the capacity of the circuits to ensure they are not overloaded.

6. Earthing and Bonding Checks:

• Verify the proper connection and condition of earthing and bonding arrangements.

7. Issue Findings:

• Detail any defects or deviations from the wiring regulations (BS 7671 in the UK).

8. Reporting:

• Compile the findings into the EICR document, stating whether the installation is ‘satisfactory’ or ‘unsatisfactory’ for continued use.
• Include recommendations for remedial actions where necessary.

9. Review and Recommendations:

• Discuss the findings with the property owner or responsible party.
• Schedule repairs or improvements if there are any ‘C1’ (danger present), ‘C2’ (potentially dangerous), or ‘FI’ (further investigation required) observations.

10. Certification:

• Once any required remedial work has been completed, issue the certificate that declares the electrical installation is safe until the next inspection.

This is a high-level overview and the specific steps may vary based on the country’s regulations and standards. Always ensure that an EICR is carried out by a competent person who is qualified to perform such inspections.