We offer free lighting design advice for emergency lighting applications,
so your design is compliant and up to date with the latest regulations.
What we do
Compliant designs
Free advice on emergency lighting designs, so they meet the latest regulations.
Points of emphasis
Recent changes mean specific points of emphasis in a building need lighting, such as extra lighting over fire extinguishers.
Spacing tables
For each luminaire, how far apart to fit them at each mounting height. See the sample.
LDT files
Photometric files to import into lighting design software.

Sample spacing table
How far apart to fit VISUAL 1.5W open area downlights, from the VISUAL spacing table.
VISUAL 1.5W open area downlight, DLB1.5-OA2 (open area lens 125°): maximum spacing in metres Scroll sideways for the escape route figures
| Mounting height | Lux directly under | Anti-panic (open area) 0.5 lux | Escape route 1 lux | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Transverse to wall | Transverse to transverse | Axial to axial | Axial to wall | Transverse to wall | Transverse to transverse | Axial to axial | Axial to wall | ||
| 2 m | 6.2 | 3.8 | 8.1 | 8.1 | 3.8 | 3.6 | 7.6 | 7.6 | 3.5 |
| 2.5 m | 5.1 | 4.6 | 9.8 | 9.8 | 4.5 | 4.1 | 9.1 | 9.1 | 4.0 |
| 3 m | 3.9 | 5.2 | 11.3 | 11.3 | 5.2 | 4.5 | 10.3 | 10.4 | 4.4 |
| 3.5 m | 2.7 | 5.7 | 12.7 | 12.8 | 5.7 | 4.2 | 11.3 | 11.3 | 4.2 |
| 4 m | 1.6 | 6.1 | 14.0 | 14.1 | 6.1 | 2.8 | 11.3 | 11.5 | 2.8 |
| 4.5 m | 1.3 | 6.5 | 15.1 | 15.2 | 6.4 | not reached | 8.3 | 8.5 | not reached |
| 5 m | 1.1 | 5.9 | 16.1 | 16.1 | 5.9 | not reached | 7.7 | 7.8 | not reached |
| 5.5 m | 0.9 | 4.4 | 16.3 | 16.6 | 4.6 | not reached | 6.8 | 7.0 | not reached |
| 6 m | 0.7 | not reached | 12.9 | 13.5 | not reached | not reached | 1.0 | not reached | not reached |
- Anti-panic 0.5 lux Open areas: spacing for at least 0.5 lux across the floor.
- Escape route 1 lux Escape routes: spacing for at least 1 lux along the centre line.
- Transverse and axial The two directions of the luminaire: across it, and along it.
- “to wall” The furthest a luminaire can be from a wall. The others are the furthest apart two luminaires can be.
- – That light level isn’t reached at this height.



