The Rights and Wrongs of Grounding
The worst seen in France ( Single Earthing of each PV module ) UAE ,Pakistan ,Netherland (because they seperate Plus and Minus Cabling which means heavy EMF fields ) Ireland ( have No real concept and use Earth from Inverter in some Plants also for structure )is the separation of DC and AC Grounding but than bonding them again later On.
I prefer a meshed Earthing approach ,best via a Single Earthing Point or Earthing Rod.
The Earthing loop like in UK has also severe problems .....