177
The Lighting Handbook
Equipment Group including potential ignition source
Classification max. surface temperatures in
electrical equipment Class 2
Equipment cat. permissible
surface temperature
of equipment °C
Ignition temperatures
of flammable substances
in °C
T1 450 450
T2 300 300 450
T3 200 300 200
T4 135 200 135
T5 100 100 135
T6 100
. Equipment cat. 3
Equipment cat. 2
EC type examination
Documentation
of notified body
Internal production control
Documentation
of manufacturer
Electrical appliance
Engine with internal
combustion
Yes No
Basic safety and health requirements
Temperature class Max
