Double isolation with earthing symbol inside on power supply
This Class 2 is the symbol for Double Insulation with no earth wire.



IEC 60417 
Class-II-equipment-with-functional-earthing;-Class-II-equipment-with-functional-grounding-(US)
Reference No :
6092
Registration date :
2013-03-30
Status :
Active

Referenced in :

IEC 60065    
IEC 60950-1    
IEC 62368-1