A higher output fitting may be needed to achieve the required 0.5 lux on the ground in high level mounting applications, such as warehouses or industrial-warehousing areas.
Racking aisles in warehouse environments can be difficult to navigate, particularly for unfamiliar people, so high output luminaires are key to provide sufficient illumination in these environments.
Areas with high level ceilings are always going to have lighting that's harder to spot, so the luminaires must be designed to be easily noticeable.
