What is the minimum maintained illuminance level required on escape routes according to BS 5266-1?

BS 5266-1 requires a minimum maintained illuminance of 1 lux on the centre line of escape routes.

Where should emergency lighting be positioned in relation to changes of direction?

Emergency lighting must be positioned at every change of direction to ensure occupants can clearly see the escape route.

At the mid-point between two changes of direction

Only at the final exit, not at intermediate corners

At every change of direction to ensure visibility

At least 5 metres beyond each change of direction

What is the recommended spacing between emergency luminaires in corridors?

Spacing should not exceed twice the mounting height to maintain adequate illuminance and uniformity.

No more than ten times the mounting height

A fixed 10 metres regardless of mounting height

No more than half the mounting height

No more than twice the mounting height

Free mock exam

Design — Emergency Lighting (BS 5266) Practice

Free topic-focused mock exam: 30 random questions from a pool of 50 on Design, drawn from the wider Emergency Lighting (BS 5266) bank. 35-minute timer, 70% to pass, worked explanation on every question. Use this when you've taken the full mock once and want to drill the topics you got wrong.

Questions: 30
Time limit: 35 min
Pass mark: 70% · 21/30
Question bank: 50

Free, no sign-up. Retake as many times as you like — different questions each time.

Sample questions

01What is the minimum maintained illuminance level required on escape routes according to BS 5266-1?
- A10 lux
- B1 lux
- C5 lux
- D0.2 lux
Why: BS 5266-1 requires a minimum maintained illuminance of 1 lux on the centre line of escape routes.
02Where should emergency lighting be positioned in relation to changes of direction?
- AAt the mid-point between two changes of direction
- BAt least 5 metres beyond each change of direction
- COnly at the final exit, not at intermediate corners
- DAt every change of direction to ensure visibility
Why: Emergency lighting must be positioned at every change of direction to ensure occupants can clearly see the escape route.
03What is the recommended spacing between emergency luminaires in corridors?
- ANo more than twice the mounting height
- BNo more than ten times the mounting height
- CNo more than half the mounting height
- DA fixed 10 metres regardless of mounting height
Why: Spacing should not exceed twice the mounting height to maintain adequate illuminance and uniformity.

Common questions

Is the Design mock exam free?

Yes — 100% free, no sign-up needed. Questions are pulled at random from a substantial bank, with a worked explanation on every question after you submit.

Can I retake the mock exam?

Yes. Every attempt picks a different random selection and reshuffles the options, so each retake gives you genuinely new questions. No limit on retakes.

Does this count towards the real qualification?

No — this is independent practice material. To gain the actual qualification you need to sit the official assessment through an approved provider.