Calculator scope
How to read the site estimates, assumptions and technical notes before moving into project documentation.
Results are calculated from the entered values: room dimensions, target lux, fitting lumens, watts, beam angle and planning factors. Keep those inputs with the result so the method can be checked against luminaire data, ceiling constraints and the intended task area.
Workplaces, emergency lighting, healthcare, schools, roads, sports venues, public spaces and hard-wired installations need project evidence beyond a web calculator: current documents, site measurements, luminaire data, controls information and the applicable electrical or lighting design review.