Can someone please help me understand the proper method of grounding/bonding pole mounted DC PV arrays. My experience is limited and I have observed several different installs, none have which have been quite the same when it comes to grounding. Most recently, I was at a site with a pole mounted system, which had a DC disconnect mounted to the pole. The EGC picked up the disconnect and went from there to the inverter, which was located in the house. The panels were weebed to the rails, and there was a #6 bare stranded that picked up the rails, then ran down the pole to a set of ground rods driven at the base of the pole. Is this correct? This tells me that the only thing considered "equipment" here is the DC disconnect, and that the #6 is being used as a GEC (and if so, does this GEC need to be tied into the AC GE system at some point?). Any code references would be greatly appreciated.