Originally Posted by Omingnome
Can I safely ground my DC solar components and solar batter to the chassis or is this also terrible?
Can I also ground my A/C inverter? Or would this, as I presume, be terrible?
Are you asking about the negative cable for these components or the "earth" connector (the "ground" from the inverter/charge controller "box" - sometimes called "chassis ground")??
I agree with the others in terms of the negative cable for these items. Use a good quality, large gauge (as appropriate) cable for these items.
The "earth" or "chassis ground" from the box/enclosure should be grounded to the chassis/frame/body (they are usually all grounded together).
For the AC side of things, the ground wire (the bare one) should also be connected to the chassis.