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Educational use: ElectraCore supports learning and preliminary checks. It does not replace a competent electrician or engineer. Verify results, equipment data, and current local regulations before installation or live work.
Courses/Inspection & Testing/Certification & EICRs

lesson · 8min · Lesson 32 of 36

EICR: periodic inspection

Course syllabusCourse overview
01Test Sequence & Preparation
  1. ReadWhy test sequence matters: safety
  2. ReadDead tests before live tests
  3. ReadTest instrument calibration and leads
  4. ReadBS 7671 Appendix 6 test schedule
  5. quizPreparation quiz
02Continuity Testing
  1. ReadRing final continuity: three tests explained
  2. ReadProtective conductor continuity
  3. ReadMain and supplementary bonding continuity
  4. ReadContinuity test results: limits and recording
  5. exerciseContinuity exercise
03Insulation Resistance
  1. ReadIR testing principles: 500V, 1000V
  2. ReadTesting between live conductors and earth
  3. ReadLow IR readings: causes and diagnosis
  4. ReadElectronic equipment and IR testing
  5. quizIR testing quiz
04Earth Fault Loop Impedance
  1. ReadExternal impedance Ze measurement
  2. ReadTotal loop impedance Zs measurement
  3. ReadComparing Zs to Table 41.1 limits
  4. ReadCorrecting excessive Zs readings
  5. exerciseZs measurement exercise
05RCD Testing
  1. ReadRCD tripping current tests: half-rated and rated
  2. ReadRCD trip time testing at 1× and 5× rated current
  3. ReadMaximum trip time limits for different RCD types
  4. ReadRecording RCD test results
  5. quizRCD testing quiz
06Polarity & PFC
  1. ReadPolarity testing: dead and live methods
  2. ReadPFC measurement at origin and boards
  3. ReadVerifying PFC against device ratings
  4. quizPolarity and PFC quiz
07Certification & EICRs
  1. ReadEIC: Electrical Installation Certificate
  2. ReadMinor Works Certificate: when to use
  3. ReadEICR: periodic inspection
  4. ReadObservation codes C1, C2, C3, FI
  5. exerciseEICR coding exercise
08Final Assessment
  1. exerciseFull mock test schedule: complete it
  2. quizFinal written assessment
Lesson · 8min
INITIAL VERIFICATION · SELECT TESTS FOR THE INSTALLATIONBEFORE ENERGIZATION (WHERE RELEVANT)1. Protective-conductor continuity2. Ring continuity (if present)3. Insulation resistance4. PolarityMETHOD / SYSTEM DEPENDENT5. Earth electrode (if present)6. Ze / Zs or verified enquiry7. RCD operation8. Phase sequence / functionTypical order only: stop on unsatisfactory results; use the current procedure, instrument instructions, and risk controls.
Lesson contents 0%

In this lesson

PurposeCore theoryWorked exampleKnowledge checkSources

In this lesson

PurposeCore theoryWorked exampleKnowledge checkSources
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ElectraCore lesson handout

EICR: periodic inspection

Inspection Testing · Lesson 32 · Advanced

AdvancedReview: professional review pending

Purpose

Conduct and report an EICR as a sampled, evidence-bounded assessment of an existing installation's continued safety.

Before you beginComplete inspection and test sequence · BS 7671 protective-measure assessment

Learning objectives

  • Choose the correct document
  • State extent and responsibility truthfully
  • Code safety consequence consistently
  • Close defects with traceable evidence

An EICR is not a certificate that remedial work was completed and not a retrospective EIC. It records condition, extent, agreed limitations, observations, results and a professional satisfactory/unsatisfactory conclusion.

CERTIFICATION AND CONDITION CODINGCERTIFICATION AND CONDITION CODINGORIGINCIRCUITtest pointinspect · isolate · prove · measure · interpret · restore · record

Core theory

Agree purpose, extent and operational limitations before work; review records, age/use/environment, changes, maintenance and previous reports. Limitations must be reasonable and cannot exclude obvious danger for convenience.

Inspect and test enough to assess safety, expanding sampling when defects or inconsistency appear. Record inaccessible items, actual tests, instrument/method and every observation with location/evidence.

C1, C2 or FI observations make the report unsatisfactory; C3 alone does not. Recommend next inspection from condition/use/risk and applicable law, not an automatic universal interval.

Terms, symbols, and units
TermMeaningSymbolUnit
EICRElectrical Installation Condition ReportNot applicableNot applicable
SamplingSelected inspection/testing expanded when evidence warrantsNot applicableNot applicable
Overall assessmentSatisfactory or unsatisfactory opinion within stated extent/limitationsNot applicableNot applicable
Worked exampleAn agreed sample finds heat damage in two of four opened accessories on one circuit.

Assumptions: Observations describe the supplied installation state; Inspector has competent access to relevant evidence.

  1. Evidence: The defect rate invalidates confidence in the original sample.
  2. Expand: Increase inspection on that circuit/related workmanship and assess immediate risk.
  3. Report: Record locations, code by consequence, limitation changes and remedial urgency.

Expand sampling and code the evidenced safety condition; do not extrapolate a satisfactory result from the original plan.

Reasonableness check: The conclusion follows document purpose and present safety consequence rather than age, aesthetics or commercial pressure.

Common mistakes
  • Using an EICR to certify remedial work
  • Signing design/construction responsibility without evidence
  • Coding every nonconformity C2 or using FI to avoid reasonable investigation

Where this appears in practice

Accurate certification and condition reporting provides owners, dutyholders and future inspectors with traceable technical evidence and clear action priorities.

SafetyA C1 condition needs immediate action to remove danger and prompt written notification. Do not leave covers, bonding, test links or isolations disturbed; communicate urgent risks before departing and document actions taken.
Local code checkUse the correct BS 7671 model form/edition, applicable Building Regulations and devolved/local legal duties, current Electrical Safety First Best Practice Guide 4, client contract, competent-person scheme rules and record-retention requirements. Certification does not transfer responsibility for design, construction or inspection/testing to a person who did not perform or verify that work.

Knowledge check

Does an EICR certify that remedial work has been completed?

No. Remedial work needs its own certification/confirmation and affected retesting.

Answer: No. Remedial work needs its own certification/confirmation and affected retesting.

Practical exercise

Plan an EICR sample and escalation rules for a mixed-use installation with incomplete records.

Summary

  • Form choice follows the work and responsibility
  • Extent and limitations bound the conclusion
  • Codes describe safety consequence, not simple noncompliance

Sources and review

  • Model forms: EIC, Minor Works and EICR: IET; BS 7671:2018+A4:2026 and applicable transition editions; United Kingdom
  • Best Practice Guide 4: Electrical installation condition reporting: Electrical Safety First; Issue 7 / current revision must be confirmed; United Kingdom
  • Electrical safety standards in private and social rented sectors: UK Government; 2025 guidance; England

Editorial review date: 2026-08-22. Professional electrical review is pending.

Educational material for learning and preliminary checks. Verify current local requirements and exact equipment instructions. This lesson does not replace competent professional work.

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