Refreshing my knowledge of grounding and bonding and earth grounds and what not as it applies to off-grid solar. This video series explains it all rather simply. https://www.youtube.com/watch?v=Ky5luEx6R2M
Learned something new though. Many of the cheaper stand-alone inverters and the power stations DO NOT work like regular grid power. Instead of 120VAC on L1 and 0VAC on Neutral. They are +60VAC and -60VAC.
So if you were to backfeed a 'solar generator' to one of your house outlets during a grid outage (illegal and dangerous, but people do it all the time). Your house wiring is going to have a neutral/ground bond, so you'll get a 60VAC short and blow up your inverter or solar generator.