Putting together my system and I decided to open the inverter to see where these extra fuses that came with it went. I noticed that the receptacles didn't have any kind of ground which you can see in the picture. I'm a journeyman electrician dealing in commercial/industrial so I have enough experience with AC. Being new to DC and solar maybe I'm just missing something but usually I would figure there would be a ground to the internal system somewhere or to the neutral. Also not seeing a place for mechanical ground unless it doesn't need one