Just inspected a home with a 200 amp main feeding a 100 amp exterior sub. The exterior sub then solely feeds a 100 amp interior sub. Not sure why they took the power out of the house to just bring it back in but that’s a different subject. The main is grounded solely to the water pipe.
The exterior sub and meter both have separate ground rods.
The interior sub doesn’t appear to be grounded at all.
The main has 3 grounding/grounded bus bars. 2 of them are right next to the ungrounded bus bars and the 3rd is off to the far left. I couldn’t find a bonding screw. It appears the 2 bus bars directly next to the ungrounded bus bars have a bonding jumper in between them. The problem (I think) is that the electrician used the floating bus bar off to the left and the bus bar on the right side of the ungrounded buses to hook up the neutrals and grounds so there is no bond. There are many ungrounded and reversed polarity receptacles throughout the home so I annotated those. I think I also need to address the lack of a bond in the main but I want to make sure I’m correct before reporting it. Anyone see anything different than I’m seeing? I’ll try to attach some pics when I get home. Thanks.