I’m attempting to determine if my home’s electrical enclosure is bonded to the neutral/ground bars. Honestly it’s all a little confusing. I’ve studied this a lot but practical electrical inspection is a difficult subject. I’m trying to determine if there is a bonding screw that connects my enclosure to my neutral/ground bars but I don’t believe there is one. It appears to me my enclosure is not bonded. If I’m wrong please tell me so I’ll know for future reference.
It also appears to me that the neutral bus bars below the hot bars have ground wires attached (Which I have read on other forums is acceptable, I’m not sure if these are all three neutral bars or if 2 are neutrals/1 ground bar) but I see plain copper wires on both the top and middle bars, so both bars with neutrals also have ground wires attached.
This is the main disconnect. I have a meter outside with no disconnect options there and there are no subpanels in my home. I know this panel should be bonded and the neutral and grounds should be bonded as well. If I’m way off please tell me I want to understand this better.
Panel is square D in a home built in 1957 and I see no green screw anywhere. Thanks.