The standard values for service illuminance (Em [Lux]), color appearance (F), color rendering group (Ra), and unified glare restriction (UGRL) according to EN 12464-1 are listed in the table for the various types of interior or activity. The ratings for service illuminance, color rendering group, and direct glare restriction class represent minimum values to be met by the lighting system.


Interiors / Activities

Em[lx]

F

Ra

UGRL

Cable and wire manufacture

300

ww, nw

80

25

Winding armatures
    - coils with thick wire
        - coils with medium wire
      - winding fine wire coils


300

500

750

ww, nw

80


25

22

19

Coil coating and impregnation 300
ww, nw 80
25
Assembling
                 - rough, e.g. big transformers
                      - medium fine, e.g. switchboards
      - fine, e.g. telephones
        - precision, e.g. gauges


300

500

750

1000

ww, nw

80


25

22

19

16

Electronics workshops, testing, adjusting

1500

ww, nw, tw

80

16