Maintained or Non-Maintained Emergency Lighting: Which Do You Need?

Choosing between maintained and non-maintained emergency lighting isn't simply a matter of preference — it's a decision shaped by your building type, how it's used, and who occupies it. Getting it right ensures both compliance and safety.

Maintained Emergency Lighting

Maintained fittings are illuminated at all times, running from the mains supply as part of your standard lighting scheme. Should mains power fail, an integrated battery takes over, keeping the fitting lit for the required duration — typically a minimum of three hours.

This mode is the standard for public assembly spaces where lighting may be dimmed during normal operation: cinemas, theatres, bars, leisure centres, and shopping centres. In these environments, maintained luminaires — including illuminated exit signage and architectural bulkheads — are a regulatory requirement, not an option.

Non-Maintained Emergency Lighting

Non-maintained fittings remain off during normal operation and activate only when the mains supply to standard lighting fails. A continuously trickle-charged battery provides the power reserve, again rated for a minimum three-hour duration.

This approach is well-suited to spaces that are consistently and adequately lit when occupied — offices, schools, warehouses, and similar workplaces. Regular testing is essential to confirm the battery reserve remains effective.

Can a Fitting Be Both?

Yes. Many contemporary emergency fittings are designed as switchable units, operable in either maintained or non-maintained mode via a standard light switch. This is particularly practical in mixed-use buildings where different zones carry different requirements — a single fitting specification can serve both.

Note that the reverse is not possible: a fitting designed solely for non-maintained operation cannot be rewired for maintained use.

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Making the Right Choice

If your project spans multiple occupancy types or you're specifying for a complex environment, a formal fire risk assessment carried out by a competent person is the recommended starting point. This ensures your emergency lighting strategy is both code-compliant and fit for purpose.

For guidance on specifying the right emergency lighting for your project, speak to our team.