What is checked during electrical safety inspection (EICR)

What is Checked During an Electrical Safety Inspection (EICR)? Complete Guide to EICR Checks and Procedures

An Electrical Installation Condition Report (EICR) defines the condition, safety and compliance of fixed electrical installations in buildings. In this guide you will discover what is checked during an EICR, from the initial visual inspection through to live testing and the interpretation of report codes. You will learn why an EICR matters for landlords, homeowners and commercial operators in 2025, how qualified electricians conduct each stage, which components are scrutinised and how faults are classified and remedied. The following sections cover:

• Definition, purpose and legal framework of an EICR
• Main inspection stages (visual, dead, live and RCD testing)
• Component-specific checks on consumer units, earthing, wiring and accessories
• Report codes, fault categories and safety implications
• Inspection frequency for different audiences and typical remedial actions and costs
• Benefits of regular EICRs for fire prevention, compliance and system longevity

This article provides a complete, featured-snippet-ready overview of electrical safety checks under BS 7671 regulations, ensuring you understand each procedure and its safety rationale before scheduling your next inspection.

Electrical Safety Inspection (EICR): Checklist and Procedures

An Electrical Installation Condition Report (EICR) is a formal document prepared by a qualified electrician that evaluates the condition of fixed wiring, protective devices and safety measures in a property. It ensures compliance with the IET Wiring Regulations (BS 7671) and identifies potential hazards, such as deterioration or defective circuit protection, that could lead to electric shocks or fires. For landlords and commercial operators, an EICR fulfils legal obligations under the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020, reducing liability and ensuring tenant safety.

Safety of Domestic Electrical Installations: Inspection, Testing, and Regulations

This study addresses: The quality of domestic electrical installations, periodic testing, inspection, and verification; The rules and regulations as developed by relevant stakeholders within the sector and enforced by statutory bodies; Testing requirements in domestic electrical installations which underpin safety for the occupier; The occupancy and the environmental conditions of the premises, as these are important factors dictating the frequency

Beyond compliance, an EICR enhances occupant security by highlighting faults early, allowing targeted remedial work that prevents accidents and extends system lifespan. Understanding these aspects leads directly into the specific elements covered in every electrical safety inspection.

What Does an EICR Cover in Electrical Safety Inspections?

An EICR inspection examines every fixed part of an electrical installation to confirm safe operation and regulatory compliance. It covers protective devices, wiring integrity, earthing and bonding connections, circuit polarity, insulation resistance, and the functionality of residual current devices (RCDs). The inspection scope includes consumer units, switchgear, cables, outlets, light fittings and bonding conductors throughout domestic, commercial or industrial premises.

By systematically assessing these elements, electricians pinpoint unsafe conditions—ranging from loose connections to overloaded circuits—and prioritize urgent repairs. This systematic approach ensures that no critical safety feature is overlooked, setting the stage for detailed testing procedures that follow.

Who Can Perform an EICR? The Role of a Qualified Electrician

Only a competent person with approved qualifications (such as City & Guilds 2391 or membership of a recognised body) may perform an EICR. This electrician must demonstrate the skills and experience to conduct visual and instrumented tests, interpret readings accurately and classify observed defects according to severity codes. Engaging a qualified professional ensures that test results are reliable and that any recommended remedial work addresses genuine hazards.

A certified electrician not only inspects but also provides expert advice on upgrading protective devices, improving bonding or replacing outdated consumer units. Their professional judgement underpins the safety recommendations recorded in the EICR, bridging inspection findings to remedial solutions.

What Are the Legal Requirements and Regulations for EICR in the UK?

The IET Wiring Regulations (BS 7671) set the technical standards for safe electrical installations, forming the benchmark for all EICR inspections. Since 2020, private landlords in England must commission an EICR at least every five years or at the start of a new tenancy, with fines up to £30,000 for non-compliance. Commercial and industrial properties must adhere to risk-based inspection intervals, typically every three to five years depending on usage and environment.

Adhering to these regulations not only avoids penalties but also demonstrates due diligence in risk management. Awareness of evolving standards—such as the 2025 RCD test updates requiring testing at full rated current—ensures your installation remains compliant and fit for purpose.

What Are the Main Stages of an EICR Inspection?

An EICR inspection proceeds through four key stages—visual inspection, dead testing, live testing and RCD functionality checks—to establish a complete safety profile of an installation. Each stage builds on the previous findings, from identifying visible defects to verifying protective device performance under load. This structured process ensures that hidden issues are revealed and addressed before final classification.

The next paragraphs outline each stage in detail, illustrating the equipment used, the parameters measured and the safety rationale behind every test.

What is a Visual Inspection in an EICR?

A visual inspection involves examining wiring runs, connections, protective devices and accessories without energising the circuits. The electrician checks for damage, overheating, exposed conductors, correct cable support and clear access to consumer units. This initial assessment identifies corrosion, deterioration or unauthorised modifications that pose immediate hazards.

After recording any visible defects, the inspector transitions seamlessly to dead testing, where insulated tools and megohmmeters confirm internal integrity. The visual findings guide targeted tests, ensuring efficient and safe inspection workflows.

What Does Dead Testing Involve During an EICR?

Dead testing assesses insulation resistance, continuity of protective conductors and correct polarity with the power isolated. Using an insulation resistance tester, the electrician measures resistance between live conductors and earth, ensuring values meet minimum thresholds. Continuity checks verify that earthing and bonding conductors have low resistance paths, crucial for rapid fault clearing.

By confirming polarity at switchgear and sockets, dead testing prevents hazards caused by reversed connections. Once these parameters satisfy BS 7671 criteria, the inspection progresses to live testing under controlled conditions to validate protective device performance.

How is Live Testing Conducted in an EICR?

Live testing evaluates the performance of protective devices and the integrity of earth fault loop impedance under normal supply conditions. Using loop impedance testers and multifunction testers, the electrician measures earth fault loop readings at distribution boards and socket outlets to confirm rapid disconnection under fault. Load testing confirms that circuit breakers and fuses will operate at specified fault currents.

These measurements ensure that under an earth fault, the disconnection time limits set by BS 7671 are achieved. Successful live testing paves the way for precise RCD trip time assessments without compromising safety.

How is RCD Functionality Tested in an Electrical Safety Inspection?

RCD functionality tests simulate earth leakage faults to confirm device sensitivity and trip times at full rated current. The electrician uses an RCD tester to apply a controlled leakage current, measuring the time taken to trip the device. The test verifies that the RCD disconnects within the maximum trip time specified for human protection or fire prevention.

Ensuring correct RCD performance is vital to reduce electric shock risk and minimise fire hazards from earth faults. With RCD data recorded, the inspection concludes by assigning classification codes to any detected issues.

Which Electrical Components Are Checked During an EICR?

An EICR inspects a range of fixed components to ensure each part of the installation meets safety standards and operates reliably. Key elements include the consumer unit, earthing and bonding conductors, wiring systems and accessory fittings. Detailed checks confirm that every component performs its protective role under normal or fault conditions, maintaining overall system safety and compliance.

The following table summarises each component, the attributes examined and expected outcomes.

What Checks Are Performed on the Consumer Unit (Fuse Board)?

The consumer unit inspection confirms that the enclosure is undamaged, all protective devices match circuit load requirements and labelling clearly identifies each circuit. The electrician examines busbar insulation, terminal tightness and segregation between live parts. Correct breaker or fuse ratings and the presence of RCD or RCBO devices per regulatory requirements are verified.

Ensuring a well-maintained consumer unit prevents overloads and guarantees rapid disconnection under fault, which directly supports earth fault loop impedance targets and occupant safety in a power fault scenario.

How Are Earthing and Bonding Assessed in an EICR?

Earthing and bonding checks verify that the main earth conductor, supplementary bonding to metallic services and interconnections maintain low resistance paths. Using a continuity tester, the electrician confirms that bonding conductors securely clamp onto pipes, gas and water services. Measurements ensure that earth electrode impedance meets maximum values for fault clearance under BS 7671.

Proper earthing and bonding prevent metalwork from becoming live in fault conditions, safeguarding occupants from electric shock. Once these checks satisfy standards, wiring integrity tests confirm system continuity.

What is Inspected in Wiring and Cable Systems?

Wiring inspections focus on cable insulation condition, correct conductor sizing and secure support methods. The electrician visually assesses for cuts, abrasions, overheating discoloration or unauthorised splices. Correct grouping and segregation of circuits are confirmed to prevent electromagnetic interference or accidental damage.

These checks ensure that wiring retains its protective insulation and that circuit current-carrying capacity aligns with load demands, which minimises fire and shock hazards throughout the installation.

How Are Sockets, Switches, and Light Fittings Evaluated?

Accessory evaluations inspect socket polarity, earth continuity, secure mounting and switch operation without flicker or overheating. The electrician uses a plug-in test instrument to verify live, neutral and earth connections, confirming that each outlet meets target impedance values. Lighting fittings are checked for secure connections, correct bulb type and absence of damage in lampholders or reflectors.

These functional and visual checks complete the component-level assessment, linking accessory safety to overall installation integrity before classifying any observations.

What Do EICR Report Codes Mean and How Are Faults Classified?

EICR reports use standard codes to indicate the severity of observations: C1 (danger present), C2 (potentially dangerous), C3 (improvement recommended) and FI (further investigation required). These classifications guide urgent remedial priorities and provide clear instructions on risk levels. Correct interpretation ensures that dangerous conditions receive immediate attention, while recommended improvements can be scheduled to maintain compliance.

Understanding classification codes reduces ambiguity in action plans and aligns stakeholders—from landlords to maintenance teams—on safety requirements and timelines.

What is the Meaning of C1, C2, C3, and FI Codes in an EICR Report?

How Are Common Electrical Faults Identified and Categorized?

Common faults such as damaged insulation, loose connections, overloaded circuits and faulty RCDs are identified through visual and instrumented tests. Each fault is logged with its location, nature and classification code. For example, an overheated cable joint with melted insulation would receive a C2 code, prompting a rapid splice replacement.

Categorizing faults by code creates a prioritized action list that aligns with legal compliance and occupant safety protocols, guiding electricians and property managers on essential next steps.

What Are the Safety Risks Associated with Different Fault Classifications?

C1 faults pose immediate danger of electric shock or fire and must be isolated without delay. C2 defects signal a substantial risk escalation if left unremedied, while C3 observations indicate improvements that enhance long-term safety but do not require urgent action. FI entries highlight areas needing further investigation to confirm risk status.

This structured approach to fault severity reduces uncertainty and enables property owners to allocate resources effectively, ensuring that high-risk conditions are eliminated first.

How Often Should an EICR Be Conducted and Who Needs It?

Inspection frequency depends on property type and usage. Rental properties require EICRs every five years or at each change of tenancy under current regulations. Homeowners are advised to schedule inspections every ten years for standard dwellings, with shorter intervals in high-usage or older properties. Commercial and industrial installations follow risk-based intervals—typically three to five years—depending on environmental factors and load profiles.

Consistency in scheduling inspections prevents lapses in safety assessments and aligns maintenance cycles with regulatory timelines, reducing the likelihood of unexpected hazards.

What Are the EICR Requirements for Landlords in 2025?

Landlords in England must have an EICR conducted at least every five years or at the start of every tenancy, as mandated by the 2020 Private Rented Sector Regulations. Failure to comply can result in fines up to thirty thousand pounds and breach of tenancy conditions. Ensuring timely inspections and retaining valid reports demonstrates landlord due diligence and protects against enforcement actions.

Adhering to these requirements supports tenant safety and reduces legal and financial risks associated with non-compliance.

How Often Should Homeowners Schedule Electrical Safety Inspections?

Homeowners should consider an EICR every ten years for typical domestic installations, with a five-year interval for rented rooms or properties with frequent occupant changes. Older properties or those with visible wear should be assessed every five years to detect hidden degradation early. Regular inspections help maintain system reliability, prevent service interruptions and safeguard household members from electrical hazards.

By matching inspection intervals to property condition and usage, homeowners maintain peace of mind and align with best practice safety standards.

What Are the EICR Guidelines for Commercial and Industrial Properties?

Commercial and industrial installations require risk-based intervals, often every three to five years, influenced by usage intensity, environmental exposures and equipment sensitivity. Factories, workshops and office complexes with heavy machinery or outdoor electrical equipment may need more frequent inspections—sometimes annually—to mitigate heightened wear and exposure risks. Tailoring intervals to operational demands ensures continuous compliance and minimises unplanned downtime.

Adopting a proactive inspection schedule positions businesses to manage electrical risks effectively and sustain productivity.

What Are Common EICR Faults and How Are They Remedied?

Certain faults recur across domestic and commercial inspections, including worn insulation, overloaded circuits, inadequate earthing and defective RCDs. Remedial actions range from simple socket replacements to full consumer unit upgrades and supplementary bonding installations. Understanding typical interventions and cost implications helps property owners budget for safety upgrades and plan maintenance cycles.

The following list identifies the top ten common EICR faults and their usual remedies.

1. Damaged cable insulation requiring re-sheathing or replacement.
2. Loose or corroded terminal connections corrected by tightening or cleaning.
3. Overloaded circuits resolved by redistributing loads or installing higher-rated protection.
4. Faulty RCDs replaced with compliant units tested at full rated current.
5. Inadequate earthing/bonding improved with additional bonding conductors.
6. Unmarked or mislabelled consumer unit circuits relabelled accurately.
7. Outdated consumer units replaced with modern enclosures and RCBO protection.
8. Reversed polarity in sockets corrected by rewiring live and neutral conductors.
9. Insecure accessories refitted and tested for correct operation.
10. Excessive loop impedance reduced by conductor upgrades or improved earthing.

What Are the Top 10 Common Electrical Faults Found During EICRs?

Referencing the list above, the most frequent defects include damaged insulation, loose connections, overloads and defective protective devices. Each fault is documented with its classification code, guiding urgency and repair scope. For instance, a worn cable with exposed conductor typically receives a C2 designation, prompting rapid replacement.

Consistent identification of these faults streamlines remedial planning and ensures that the most hazardous conditions are prioritised.

What Remedial Actions Are Recommended After an EICR?

Remedial recommendations range from targeted component replacements—such as RCD swap-outs or socket repairs—to broader upgrades like consumer unit renewal and enhanced bonding. Electricians provide detailed work scopes, including labour and material estimates, and specify compliance standards for each intervention.

Implementing these actions promptly restores safety performance and demonstrates commitment to regulatory compliance and occupant protection.

What Are the Typical Costs Associated with EICR Remedial Work?

Remedial cost estimates vary with fault complexity: socket replacements or terminal retightening might cost under one hundred pounds per outlet, while full consumer unit upgrades including RCBOs can range from five hundred to one thousand five hundred pounds. Earthing and bonding improvements typically fall between one hundred and three hundred pounds, depending on conductor runs. Clear cost breakdowns allow property owners to plan budgets effectively and prioritise high-risk corrections.

Understanding these cost factors supports informed decisions on safety investments and maintenance scheduling.

Why Are Regular Electrical Safety Inspections Crucial? Benefits of EICR Compliance

Regular EICRs play a critical role in preventing electrical fires and shocks by ensuring protective devices function correctly and identifying hidden installation defects before they escalate. They also fulfil legal requirements, reducing liability and demonstrating proactive risk management. Moreover, maintaining electrical safety through periodic inspections enhances system efficiency, minimises unplanned downtime and prolongs equipment lifespan.

These multifaceted benefits underscore why EICR compliance is essential for landlords, homeowners and businesses alike, forming the foundation for safer premises and improved operational reliability.

How Do EICRs Prevent Electrical Fires and Shocks?

EICRs detect insulation breakdown, loose connections and overloaded circuits—common precursors to electrical fires—and verify that RCDs trip within milliseconds to prevent harmful shocks. By identifying these hazards early, inspections enable targeted repairs that remove ignition sources and reduce fault currents.

This proactive approach to safety minimises emergency responses and provides confidence that electrical systems remain safe under evolving usage demands.

What Are the Compliance and Legal Benefits of an EICR?

An up-to-date EICR evidences adherence to BS 7671 and private rented sector regulations, shielding landlords and businesses from enforcement penalties and litigation. It also enhances insurance standing by demonstrating a commitment to risk mitigation. Documented compliance supports tenancy agreements and corporate safety policies, reinforcing stakeholder trust and operational continuity.

Meeting statutory inspection requirements positions property owners as responsible custodians of safety and builds a culture of compliance throughout all premises.

How Can Regular EICRs Improve Electrical System Longevity and Efficiency?

Periodic inspections uncover ageing components and emerging wear patterns, enabling preventative maintenance that extends cable and device lifespans. Rebalancing loads and upgrading outdated protection reduces energy losses and optimises performance. Over time, these improvements lower operational costs, reduce unplanned outages and contribute to sustainable building management.

Consistent EICR programmes thus deliver both safety assurance and financial benefits, solidifying the value of regular electrical safety checks.

An Improved Methodology for the Periodic Verification of Low-Voltage Electrical Installations

This paper presents enhanced measures for the prevention of electrical fires and electric shock. Drawing upon an extensive review of current standards and literature, alongside analysis of results from long-term experimental work (2011–2022), original and comprehensive questionnaires specifically designed for the periodic verification of low-voltage electrical installations in buildings are proposed. These relate to visual inspection, functional checks, and thermal imaging inspection.

Regular Electrical Installation Condition Reports ensure that fixed wiring, protective devices and safety measures operate as intended, safeguarding lives and assets while fulfilling legal obligations and enhancing system performance. By understanding each inspection stage, component check and classification process, property owners can make informed decisions, budget effectively for remedial work and maintain electrical installations that support safe, efficient and compliant premises. Scheduling timely inspections aligns with best practices in risk management and secures lasting peace of mind.