How Many Lights – Standards AS/NZS 1680.1:2006
The How Many Lights website is a very useful source of information on the “Recommended maintained luminance” for the activity/interior.
For example a value of 40 Lux is recommended for areas “with Interiors rarely visited with visual tasks limited to movement and orientation” such as corridors or walkways.
A value of 1600 Lux is recommended for areas that are “Exceptionally difficult ” such as Finished fabric inspection; assembly of minute mechanisms, jewellery and watchmaking.
There is also a table recommending the Watts/Square metre
AS/NZS 4243.2:2007 Table 1
Covered car park = 4 W/m2
Cafeteria, fast food outlet = 8 W/m2
Warehouse = 8 W/m2
Hotel = 10 W/m2
Hospital = 12 W/m2
Office space = 12 W/m2
Supermarket, shopping mall = 16 W/m2
Laboratory = 17 W/m2
Workshop = 18 W/m2
LEDs Magazine website is an excellent resource
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