LED emergency exit sign with running-man pictogram fitted by CJA Electrical

For Dartford property owners with shared common parts — HMOs, blocks of flats, mixed-use buildings — emergency lighting is part of the fire safety picture Dartford Borough Council expects to see in the licence file. CJA Electrical does the install, the annual full-discharge testing, and the remedial work when fittings reach end-of-life or fail BS 5266 duration tests.

What Emergency Lighting actually is

Emergency lighting is the safety net for the moment a power cut, a fault, or a fire takes out the general lighting supply. It’s a standalone battery-backed system, not a fallback for the main lighting, and the regulations are about visible escape routes rather than illumination quality. For a Dartford property with shared common parts or sleeping accommodation, emergency lighting is what the council and your fire risk assessor will expect to see as a current installation.

When you need Emergency Lighting in Longfield

The headline rule for Longfield is the Regulatory Reform (Fire Safety) Order 2005, which requires every non-domestic premises to have a fire risk assessment that addresses escape route lighting. In practice, the properties that need emergency lighting in Dartford are HMOs, blocks of flats with shared common parts, converted-house flats with shared escape routes, and any commercial or mixed-use premises. Dartford Borough Council will normally write emergency lighting into the HMO licence directly. For commercial premises, the duty-holder (employer or building owner) is on the hook under the FSO; the fire risk assessor’s findings drive the spec.

Multifunction tester measuring end-to-end resistance on a ring final circuit
Multifunction tester measuring end-to-end resistance on a ring final circuit

Standards and what compliance looks like

Compliance under BS 5266 means the fittings are in the right places, the right grade, and the right duration. The standard distinguishes between fittings that need to come on automatically when the mains fails (non-maintained, the common case) and fittings that stay on the whole time (maintained, used where continuous light is needed). Duration ratings matter. Sleeping accommodation — and that includes any HMO licensed by Dartford Borough Council — requires 3-hour fittings. 1-hour fittings are acceptable in commercial premises with quick evacuation only. We default to 3-hour LED for residential applications because the cost difference is minimal and the compliance posture is stronger.

Fittings and where they go

LED is the default. Older fluorescent emergency fittings still in service across Dartford buildings have shorter battery lives, higher failure rates, and warmer running temperatures. When we replace fluorescent on a like-for-like basis, the new LED units use a fraction of the standby power, charge faster, and have a meaningfully longer service life before end-of-life replacement. Specification details matter — duration rating, IP rating where fittings sit in damp areas, and the choice between addressable self-testing fittings (useful in larger buildings with central monitoring) versus stand-alone fittings (simpler, lower install cost).

Smaller domestic consumer unit with each circuit clearly labelled
Smaller domestic consumer unit with each circuit clearly labelled

Testing schedule and remedials

For Longfield systems we maintain on a recurring basis, the workflow is: 1. Annual visit booked into the calendar at the same point each year 2. Full discharge test on every fitting in turn 3. Battery and fitting replacements quoted alongside the test results 4. Logbook updated, fresh certificate issued, copy to the duty owner 5. Next-year reminder logged For one-off remediation visits — typically driven by a fire risk assessment finding or an HMO licence renewal — we can usually fit the job inside a single day for a smaller property and across two or three days for larger blocks.

Why Longfield property owners book CJA Electrical

Three reasons most often. Emergency lighting work is done by a City & Guilds 2391 qualified inspector with ten years of working on Dartford property — comfortable with HMO common-parts work, fire alarm circuit interfaces, and the kind of remediation jobs where an FRA has flagged something specific. Same-week appointments are typical for Longfield. Test certificates and logbook updates supplied at the end of each visit. Remedial fittings quoted alongside any failed-test findings so the duty owner has a single document to act on.

How the work runs

What a typical emergency lighting job in Longfield looks like: 1. Site visit — walk the building, identify escape routes, confirm fitting count and locations against the FRA or licence brief 2. Specification quoted — fitting type, duration rating, exit sign positions, test schedule 3. Installation in a single visit for most Longfield properties, two visits for larger blocks 4. Each fitting wired to a permanent live (regularly-used lighting circuit) and commissioned 5. Test on completion — non-maintained operation verified, duration test scheduled for the next maintenance visit 6. BS 5266 certificate issued plus a logbook stays at the property From first call to certificate is usually under a fortnight.

What affects the price

Pricing is per property for installs, per visit for annual maintenance. The variables are fitting count, fitting type, duration rating, and access — typical Dartford HMO common parts run somewhere between four and ten fittings depending on building size. Quote responses are usually same-day on receipt of the FRA scope or a fitting count if you have one to hand.

FAQs

How often does emergency lighting need testing?

Monthly function test (the duty owner does this) and an annual full-discharge test by a competent person. The annual test runs each fitting on battery for the full 3-hour duration to confirm it lasts the distance. CJA Electrical can do the annual test on systems we’ve installed and on systems installed by others — same workflow, same documentation.

Can you replace failed emergency lighting fittings in Longfield?

Yes. Failed fittings are usually a battery problem (typical 4-5 year life on older fluorescent units, 8-10 years on modern LED with sealed cells) or end-of-life on the fitting itself. We swap failed fittings on a like-for-like basis where the existing layout is sound, or rework the whole spec where a fire risk assessment has flagged gaps in coverage.

What documentation do you supply on completion?

BS 5266 certificate documenting the installation and the test results, plus a logbook for ongoing test records that stays at the property. The certificate is the document Dartford Borough Council fire risk assessors and insurers expect to see on inspection. Annual test visits update the logbook and issue a fresh dated certificate.

How long should emergency lights stay on after a power cut?

Depends on the duration rating and the application. 1-hour fittings are the minimum for premises with quick evacuation. 3-hour fittings are required for sleeping accommodation — HMOs, blocks of flats, hotels — because evacuation may be slower. We default to 3-hour LED for residential common-parts work in Longfield because the cost difference is minimal and the compliance posture is stronger.

Can you fit emergency lighting alongside a new fire alarm system?

Yes. The two systems are separate but related — fire alarm circuits and emergency lighting circuits typically share supply origins, so coordination matters. We do the emergency lighting side and can interface with whatever fire alarm contractor is doing the BS 5839-1 work. For HMOs in Longfield we often install the emergency lighting as part of the same licence-renewal scope as smoke alarm work — see the smoke alarm installation page for that side.

Will the inspection cause much disruption?

Minimal. The annual full-discharge test runs in the background — fittings switch to battery on the test key, then back to mains 3 hours later. We can schedule the test during a quiet period for the building (early morning, late evening, weekend) to minimise impact on tenants or occupiers. New installs need a single working day for typical Longfield HMO common parts.

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Frequently asked questions

How often does emergency lighting need testing?

Monthly function test (the duty owner does this) and an annual full-discharge test by a competent person. The annual test runs each fitting on battery for the full 3-hour duration to confirm it lasts the distance. CJA Electrical can do the annual test on systems we've installed and on systems installed by others — same workflow, same documentation.

Can you replace failed emergency lighting fittings in Longfield?

Yes. Failed fittings are usually a battery problem (typical 4-5 year life on older fluorescent units, 8-10 years on modern LED with sealed cells) or end-of-life on the fitting itself. We swap failed fittings on a like-for-like basis where the existing layout is sound, or rework the whole spec where a fire risk assessment has flagged gaps in coverage.

What documentation do you supply on completion?

BS 5266 certificate documenting the installation and the test results, plus a logbook for ongoing test records that stays at the property. The certificate is the document Dartford Borough Council fire risk assessors and insurers expect to see on inspection. Annual test visits update the logbook and issue a fresh dated certificate.

How long should emergency lights stay on after a power cut?

Depends on the duration rating and the application. 1-hour fittings are the minimum for premises with quick evacuation. 3-hour fittings are required for sleeping accommodation — HMOs, blocks of flats, hotels — because evacuation may be slower. We default to 3-hour LED for residential common-parts work in Longfield because the cost difference is minimal and the compliance posture is stronger.

Can you fit emergency lighting alongside a new fire alarm system?

Yes. The two systems are separate but related — fire alarm circuits and emergency lighting circuits typically share supply origins, so coordination matters. We do the emergency lighting side and can interface with whatever fire alarm contractor is doing the BS 5839-1 work. For HMOs in Longfield we often install the emergency lighting as part of the same licence-renewal scope as smoke alarm work — see the [smoke alarm installation page](/smoke-alarm-installation/) for that side.

Will the inspection cause much disruption?

Minimal. The annual full-discharge test runs in the background — fittings switch to battery on the test key, then back to mains 3 hours later. We can schedule the test during a quiet period for the building (early morning, late evening, weekend) to minimise impact on tenants or occupiers. New installs need a single working day for typical Longfield HMO common parts.

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