Emergency Lighting Testing Requirements: BS 5266 Compliance Guide

Legal Requirements

The Regulatory Reform (Fire Safety) Order 2005 (RRO) places a duty on the 'responsible person' (typically the building owner, employer or managing agent) to ensure that emergency lighting is properly installed, maintained and tested.

The RRO does not prescribe specific testing procedures — instead it references BS 5266-1:2016 as the code of practice for the design, installation, wiring, servicing and testing of emergency lighting.

Failure to maintain emergency lighting in working order is a criminal offence under the RRO. Fire and Rescue Authorities can issue enforcement notices, prohibition notices (closing the building) and prosecute — with penalties including unlimited fines and up to two years' imprisonment.

BS 5266 Test Schedule

BS 5266-1:2016 specifies a structured testing regime:

• Daily — visual check that indicator LEDs (charge healthy indicators) on self-contained luminaires are illuminated. This is typically a walk-round inspection.

• Monthly — a brief function test simulating mains failure for a sufficient period to confirm that each luminaire operates correctly. This must be long enough to verify lamp operation but short enough to allow full recharge before the next test (typically a few seconds to one minute).

• Annually — a full rated-duration test (typically 3 hours for most commercial buildings) simulating a complete mains failure. Every luminaire must operate for its rated duration. This is the most critical test as it verifies battery capacity.

• Six-monthly (recommended) — an intermediate test between the annual tests, particularly for large or complex installations.

All test results must be recorded in a log book and retained for inspection by the fire authority.

Monthly Function Testing in Detail

The monthly test must verify:

• Each self-contained luminaire switches to emergency mode when mains power is interrupted • The light source operates correctly (no flickering, reduced output, or failure) • The charge healthy indicator returns to normal after mains power is restored • Exit signs are legible and correctly illuminated

For buildings with many luminaires (hospitals, schools, large offices), monthly testing can be disruptive and time-consuming. Manually testing 200+ luminaires across multiple floors typically requires a dedicated technician for an entire day — with inevitable human error in recording results.

This is where automatic test systems provide transformative benefits.

Annual Duration Testing

The annual 3-hour duration test is the definitive assessment of battery health. Key considerations:

• The test must run for the full rated duration (typically 3 hours for escape routes, 1 hour for open areas)

• All luminaires must still be operating at the end of the test — any that fail to maintain output for the full duration have defective batteries and must be replaced

• The test should ideally be conducted during a period when the building can tolerate loss of normal lighting (weekends, holidays) because emergency luminaires may not immediately recharge to full capacity

• After the test, luminaires must be allowed to fully recharge (typically 24 hours) before the system can be considered operational

• Results must be documented with pass/fail status for every luminaire, including its location, asset reference and any remedial actions required

Automatic Test Systems

Automatic test systems (ATS) eliminate the labour, disruption and human error associated with manual testing. They are particularly valuable in large buildings, multi-site estates and healthcare facilities.

An ATS can:

• Conduct scheduled monthly function tests and annual duration tests automatically — no technician visit required • Test luminaires individually or in sequence, so the building is never left without emergency lighting coverage • Record all results digitally, generating compliance reports for the fire authority • Alert facilities managers immediately if a luminaire fails, rather than waiting for the next manual inspection • Provide a complete audit trail with timestamped records

DALI-based emergency luminaires with integrated self-test functionality can report results via the building's DALI network to a central monitoring system. EOS emergency luminaires are available with DALI self-test as standard, compatible with all major building management and emergency lighting monitoring platforms.