Why your bathroom lights failed an EICR

Bathroom lighting fails on an EICR when the inspector records a condition judged dangerous or potentially dangerous — commonly unsuitable equipment for the location, missing additional RCD protection on circuits serving the room, inadequate IP rating for zones, exposed live parts, or incorrect switching arrangements. The assigned code depends on the specific finding.

Not every old bathroom light is automatically C2. The inspector assesses zones, equipment construction, protective measures and foreseeable use. C3 may appear for improvements that do not meet the threshold for potential danger. FI may be used where ceiling voids or encapsulated fittings cannot be fully assessed.

This page focuses on bathroom lighting observations. Supplementary bonding rules, shaver sockets and general RCD classification are covered in dedicated guides linked below.

BS 7671 defines bathroom zones relative to baths and showers. A luminaire has to be suitable for the zone in which it is installed. There is not one IP rating for every fitting in the room. A fitting intended for a less onerous zone, found inside a more onerous zone, may support a C2 observation. That is an example, not a rule that every bathroom light is C2.

Downlights pierce ceilings into potentially humid voids. Inspectors may record IP rating, fire-rated enclosure status, or absence of suitable seals. Retrofit LED units in legacy holes are a common source of observation.

Zone diagrams depend on actual room layout — shower over bath, wet room, or partially enclosed shower areas all change boundaries. The observation should reference location; clients should not assume zones from generic diagrams alone.

Additional protection by RCD for circuits in a location containing a bath or shower is part of the current design context. Absence on an existing bathroom lighting circuit is not, by itself, one universal code. It may be recorded as C2 where the inspector judges potential danger, or as a lesser observation where the rest of the protective arrangement changes that judgement.

A 230 V shaver socket supplied from a lighting circuit without RCD protection is a specific example examined in the shaver-socket guide. Lighting-only circuits with suitable SELV transformers may be judged differently.

Testing should confirm any RCD present operates within required times. A labelled RCD that fails electronic test may produce a separate observation from mere absence.

Some bathroom lights operate at extra-low voltage via transformers. Observations may concern transformer location, overheating, incorrect primary-side protection, or damaged flexible leads in zones.

Mixed-quality LED drivers and DIY mirror installations can introduce hazards invisible until inspection. FI may apply where void access is needed to confirm transformer suitability.

Decorative feature lighting near baths requires careful assessment. Pendants suspended within prohibited zones are a recurring finding in London flat refurbishments.

Modern installations may omit supplementary bonding where specified conditions are met, including effective automatic disconnection, required additional RCD protection and main bonding of extraneous-conductive-parts. “No cross-bonding under the bath” is not automatically a defect.

Conversely, missing main bonding to extraneous metal services where required can interact with Class I light fittings and conductive building parts. Read bonding observations alongside lighting entries.

The general missing-bonding guide explains main versus supplementary bonding without turning every bathroom into a bonding checklist.

• C1: danger present — exposed live parts, severely damaged luminaire, or immediate hazard identified.
• C2: potentially dangerous — unsuitable equipment for zone, missing RCD where judged necessary, or significant thermal damage.
• C3: improvement recommended — legacy fitting that remains serviceable but falls short of current improvement expectations.
• FI: further investigation — inaccessible void, unable to confirm IP rating or transformer suitability without additional access.

Read the observation number, room reference, fitting type and stated reason. Photographs on the report may show zone placement. Cross-check the circuit on the schedule for RCD status and test results.

Distinguish operational failure (“does not illuminate”) from safety classification. An EICR records safety condition, not maintenance convenience, though some defects overlap.

Use observation numbers when requesting remedial quotations for replacement luminaires, RCD upgrades or consumer-unit changes.

Remedial scope may range from replacing a single non-compliant luminaire with a zone-suitable IP-rated fitting, to adding RCD protection at the consumer unit, to rewiring a poorly designed bathroom lighting circuit.

Fire-rated downlight replacements in flats with concrete ceilings need compatible products and safe void inspection. Landlords should agree cosmetic making-good separately where needed.

After work, the contractor verifies protection, polarity, earthing and RCD operation as applicable and issues appropriate certification.

Send the bathroom-lighting observations to request a remedial quotation covering the findings on your report.

Victorian conversion flats often have small bathrooms with mixed-era fittings from successive refurbishments. Inspectors may find zone 2 downlights above a bath with no IP rating marked.

New-build developer flats may fail on isolated accessories where tenants or installers swapped fittings without maintaining IP compliance.

Wet-room conversions in studio flats push zone boundaries across most of the room, making general-purpose fittings unsuitable without careful design.

“LED lights are always safe in bathrooms” ignores IP rating, driver location and zone rules.

“Bathroom lights always need supplementary bonding” is outdated as a blanket rule; conditions in BS 7671 determine whether supplementary bonding is required.

“One failed downlight means rewire the bathroom” overstates many local replacement scenarios.

This article was reviewed on 5 August 2026 against BS 7671 bathroom zone requirements, IET Guidance Note 3 and classification practice. It does not classify a specific fitting from a description alone.

Room layouts and equipment vary. The competent person's on-site assessment determines whether bathroom lighting observations justify C1, C2, C3 or FI.

This article was editorially reviewed on 2026-08-05. It provides general operational guidance for London property decision-makers and is not personalised legal advice.

Electrical classification on an EICR depends on the installation, the observations recorded and competent professional judgement. Always read your own report and seek competent advice for your property.