I’m hoping you can help me understand sub panel wiring. It seems to me that this panel is wired incorrectly. Apparently a licensed electrician did the work, but something is not sitting well with me.
The main power feed is to a panel in the garage. This panel is fed from that panel in the garage, making it a sub panel.
Should there not be a 4 wire feed from the main panel? 2 supply, neutral and ground.
They have twisted together the bare wires in the supply cable to create a neutral, and run a separate ground to the copper main water supply. OK, I can see how that might work, but they’ve bonded that ground to the neutral bus. That’s a serious no no is it not?
The fix I can see is to remove the ground from the neutral bus and attach it to the short bar to the left of the neutral bar, as shown in the last pic.,(thereby grounding the panel) and to pull the bonding jumper screw in the top of the neutral bus in the center of the panel.
I know the proper protocol is to have a licensed electrician evaluate. I’m trying to understand for myself what is going on. (besides, a licensed electrician did the work!)