Industrial emergency lighting is easy to forget about until testing is due, a fault appears, or changes to the building make the existing setup less suitable. For factories and warehouses, that can quickly become more than a box-ticking issue. Emergency lighting plays a direct role in site safety, escape routes and compliance, especially in busy industrial environments where layouts, equipment and working patterns often change over time.
On many industrial sites, the real question is not whether emergency lighting matters. It is when the site needs an electrical contractor to inspect it, test it, alter it or upgrade it.
At Story Electrical, we support factories, warehouses and industrial premises in Peterborough and surrounding areas, including parts of Cambridgeshire and Lincolnshire. Through our industrial electrical services, we help sites address practical electrical requirements while supporting safe and reliable day-to-day operation.
That includes industrial emergency lighting, along with wider alarms and safety-related electrical systems where an industrial site needs a more joined-up approach.
Key Takeaways
- Industrial emergency lighting needs more than occasional attention when a testing date comes around.
- Factories and warehouses should review emergency lighting after layout changes, extensions, new partitions or changes in use.
- A system may still operate but no longer suit the current layout or escape routes.
- Emergency lighting may need reviewing alongside wider alarms and safety-related electrical systems.
- Testing can identify whether alterations, upgrades or replacement fittings are also required.
- Early assessment can help industrial sites deal with problems before they become more disruptive.
What Industrial Emergency Lighting Needs to Cover
On an industrial site, emergency lighting is not simply a matter of installing a few bulkhead fittings and assuming the job is complete. It needs to support safe movement through the premises if the normal lighting supply fails.
Depending on the building and its use, this may include lighting around:
- escape routes and final exits
- stairways and changes in floor level
- corridors and circulation areas
- loading and dispatch areas
- large open warehouse spaces
- production and machinery areas
- mezzanine floors
- windowless rooms and internal sections
- fire alarm points and safety equipment locations
Factories and warehouses can be particularly challenging because their layouts often include racking, machinery, partitions, storage areas and mixed-use sections. These features can affect visibility and influence how people move towards an exit during a loss of normal lighting.
Health and Safety Executive guidance on site lighting explains that emergency routes should be kept well lit. Where artificial lighting is required, suitable emergency lighting should be provided in case the primary lighting fails.
The important point is that industrial emergency lighting should suit the building as it operates today, not simply the layout that existed when the system was originally installed.

When Industrial Sites Need Emergency Lighting Work
Many sites only think about emergency lighting when routine testing is due or a fitting develops an obvious fault. However, several other changes can trigger the need for an assessment by an electrical contractor.
Emergency lighting may need reviewing following:
- a warehouse extension
- new racking or shelving arrangements
- installation of internal partitions
- changes to pedestrian routes
- alterations to fire escape routes
- the addition of a mezzanine floor
- a factory floor reconfiguration
- new production or storage areas
- changes in occupancy or working patterns
- wider electrical refurbishment work
Government fire safety guidance for factories and warehouses explains that fire precautions should reflect the risks identified through the premises’ fire risk assessment.
This matters because the arrangement that suited a building several years ago may no longer reflect its present layout, activities or escape routes.
Some sites may only require inspection and testing. Others may need additional fittings, relocated units or wider changes to ensure that emergency lighting properly supports the current use of the premises.
Signs Emergency Lighting May Need Attention
Emergency lighting problems are not always immediately obvious. A fitting may illuminate during a brief check, while the overall system no longer provides suitable coverage for the building.
Signs that an industrial emergency lighting system may need attention include:
- damaged, discoloured or visibly ageing fittings
- lights that fail to illuminate during testing
- inconsistent fitting types across the premises
- missing or unclear maintenance records
- uncertainty about previous inspection or certification
- extensions completed without an emergency lighting review
- new partitions blocking light or changing escape routes
- racking that affects visibility through warehouse aisles
- areas of the building that appear poorly covered
- recent changes to exits, doors or internal walkways
Sometimes the problem is a failed battery or damaged fitting. In other cases, the individual fittings may operate, but their positions no longer match the way the site is arranged.
That distinction is important. Replacing a faulty unit may resolve one problem, but it will not correct a wider coverage issue caused by significant changes to the building.
Industrial Emergency Lighting Testing
Routine testing helps establish whether emergency lighting activates when the normal supply fails and whether fittings continue to operate as intended.
The IET states that emergency lighting systems should be periodically inspected and tested in line with relevant standards, including BS 5266-1 and BS EN 50172. Its guidance also refers to yearly inspection and testing resulting in documentation for the person responsible for the premises.
You can read more in the IET’s emergency lighting and safety services guidance.
During emergency lighting work, an electrical contractor may need to consider:
- whether fittings operate correctly
- the condition of batteries and charging components
- whether illuminated signs remain clear and visible
- whether the system reflects existing escape routes
- areas where coverage appears insufficient
- damage caused by machinery, stored materials or site activity
- whether previous alterations have affected the system
- the availability of testing and maintenance records
Testing should not be treated purely as an administrative exercise. It can reveal faults, missing coverage and changes that need correcting before the system can reliably support the site.
This can also form part of a wider industrial electrical maintenance programme, particularly where site managers want to identify developing electrical problems before they cause disruption.

Layout Changes, Alterations and Upgrades
Factories and warehouses rarely remain unchanged. Racking moves, machinery is replaced, storage capacity increases and working areas are reorganised. Each alteration can affect the suitability of the existing emergency lighting.
For example, tall racking may interrupt the spread of light through a warehouse aisle. A new partition may create a route that was not present when the original fittings were positioned. A mezzanine or extension may introduce additional stairways, levels and exit routes.
Following these changes, emergency lighting work may involve:
- adding new emergency fittings
- relocating existing fittings
- replacing damaged or obsolete units
- upgrading older fittings
- altering circuits following a site reconfiguration
- improving coverage around new routes and exits
- reviewing the system after wider electrical works
The electrical infrastructure supporting the lighting may also need consideration. Where a site is expanding or changing its electrical requirements, emergency systems may need reviewing alongside industrial power distribution and switchgear.
Reviewing these elements together can provide a clearer picture of what the site needs, rather than treating every electrical system as a completely separate issue.
Why Industrial Sites May Need More Than Testing
A test can confirm whether a fitting illuminates, but it does not automatically confirm that the complete system remains suitable for the current building.
For example, a fitting may pass an operational test while:
- a newly installed partition blocks its light
- an escape route has moved
- a warehouse extension remains uncovered
- new racking reduces visibility
- the direction of travel has changed
- other safety-related electrical systems also require attention
This is why factories and warehouses may need a more practical review rather than a simple fitting-by-fitting check.
Emergency lighting also sits within a wider safety arrangement that may include fire alarms, safety power supplies and other electrical systems. A change affecting one system may have consequences for another.
That does not mean every site requires a major upgrade. A suitable contractor should first establish what still works, what no longer suits the premises and which improvements are genuinely required.
Choosing an Industrial Electrical Contractor
Industrial premises present different challenges from smaller commercial or domestic properties. Work may need to take place around machinery, production schedules, loading operations, staff movements and restricted access areas.
When choosing a contractor, site managers may want to consider whether the electrician:
- has experience working in factories and warehouses
- understands the impact of layout changes on electrical systems
- can plan work around operational requirements
- provides clear information about faults and recommended work
- can support both testing and remedial alterations
- offers wider industrial electrical services when related issues arise
Our guide to choosing an industrial electrician in Peterborough covers additional points businesses should consider before appointing a contractor for an industrial site.
The aim should be to find a contractor capable of looking beyond a single failed fitting and understanding how the emergency lighting works within the wider building.
Industrial Emergency Lighting in Peterborough and Surrounding Areas
Story Electrical supports factories, warehouses and industrial premises across Peterborough and surrounding areas, including parts of Cambridgeshire and Lincolnshire.
Our industrial electrical work includes support with:
- industrial emergency lighting
- emergency lighting inspection and testing
- replacement emergency fittings
- lighting alterations following layout changes
- emergency lighting upgrades
- industrial electrical maintenance
- power distribution and switchgear
- wider alarms and safety-related electrical systems
Because every factory and warehouse operates differently, the appropriate work depends on the building, its current layout and the condition of the existing installation.
For some sites, a test and several minor repairs may be sufficient. Others may require additional fittings or wider alterations following expansion, refurbishment or changes to escape routes.
Summary
Industrial emergency lighting should remain suitable for the way a factory or warehouse is currently arranged and used. Routine testing is important, but site extensions, new racking, partitions, altered walkways and changes to escape routes can all affect the system.
An industrial electrical contractor can help identify whether the site requires testing, repairs, additional fittings or a wider review. Addressing these issues early can make the required work easier to plan around normal operations.
Story Electrical provides industrial electrical services for factories, warehouses and other operational premises across Peterborough and surrounding areas.
Get in Touch
Story Electrical – Industrial Emergency Lighting in Peterborough
If your factory or warehouse needs help with industrial emergency lighting, contact Story Electrical to discuss the site and the work required.
We support industrial premises in Peterborough and surrounding areas, including parts of Cambridgeshire and Lincolnshire, with emergency lighting testing, alterations, upgrades and wider industrial electrical work.
Story Electrical – Commercial and Domestic Electrician
Address: Unit 14, Spitfire Business Park, Northfield Road, Market Deeping, Peterborough PE6 8WE, United Kingdom
Call: 01733 913133
About the Author
Mark Story is the founder and director of Story Electrical. He works with industrial and commercial clients in Peterborough and surrounding areas, delivering practical electrical solutions for real working environments.
His work includes industrial emergency lighting, electrical maintenance and wider industrial electrical services for factories, warehouses and operational premises.
Story Electrical works to relevant British Standards and holds NAPIT certification.
Frequently Asked Questions
What does industrial emergency lighting need to cover?
Industrial emergency lighting should support safe movement through a factory or warehouse if the normal lighting fails. Relevant areas may include escape routes, exits, stairways, corridors and circulation areas.
When should a factory or warehouse review its emergency lighting?
A review may be needed after changes to the building layout, escape routes, racking, partitions or working areas. Testing faults, damaged fittings and uncertainty about previous records can also indicate that the system needs attention.
Is emergency lighting testing enough for an industrial site?
Not always. Testing may reveal that the system needs repairs, additional fittings, relocated units or wider alterations because the building has changed.
Can warehouse racking affect emergency lighting?
Yes. Tall racking and changes to warehouse aisles can affect light distribution, visibility and the routes people use to leave the building.
Does an emergency lighting system need reviewing after an extension?
Yes. An extension can introduce new rooms, routes, exits, stairs or working areas that were not covered by the original installation.
Who should carry out industrial emergency lighting work?
The work should be completed by a suitably qualified electrical contractor with the knowledge and experience needed to inspect, test and alter emergency lighting systems in industrial premises.


