gkenyon: 
 

Certainly looks like the primary of the driver is required to be earthed.

At least that's what the IEC 60417-5017 symbol is telling me …

And there is no double square symbol. However, if the drivers are parts of luminaires, what does the information on their labels say?

gkenyon: 
 

Certainly looks like the primary of the driver is required to be earthed.

At least that's what the IEC 60417-5017 symbol is telling me …

And there is no double square symbol. However, if the drivers are parts of luminaires, what does the information on their labels say?