The white ground is going out to the pole and the green one is my grounding rod, should the green one not be bonded to the pannel not the bus bar?
Note not an electrician, but my copper water lines feel live and a few switches in my house give us shocks
What need is there for a 200 amp circuit? We had to install 50a to power a 40ft camper and it's in a separate box.
The 200 amps would be the entire service from the utility meter for a single family home. It's definitely overkill on most houses but with the electrification of everything it's probably for future proofing. Big houses or properties with multiple detached structures will occasionally have a 400 amp service but the utility meters they put on those are only rated for 320 amps continuous so I think 400 is also overkill for those types of properties usually.
Yeah. I have 200 amp service but it's because I have a car charger, heat pump, electric furnace, induction range, electric water heater, and a server rack. That being said, I've never even come close to using all 200 amps at once. It's at least good piece of mind in case that randomly happens for some reason, though.