Thanks for that. Forgive my ignorance, Im a fairly handy guy and been a helicopter mechanic for 15 years, but this is Chinese to me about grounding. I understand the basic grounding principles of electricity but does this mean I need to do anything different than ground to the vehicle chassis?
Grounding is a complicated topic.
As I said I'm not an electrician and hesitate to get deep into it.
When you ground to the vehicle chassis that has 2 main connotations.
1. Using the chassis as the return part of the circuit.
2. Using the chassis as the 0 voltage reference.
Please don't do option 1 and I'm not talking about 2.
What I am talking about is making sure your alternating current system doesn't hurt people or pets or start a fire.
Neutral and ground must be properly bonded under all circumstances so that fault conditions have a nice low impedance path back to source in order to clear fault conditions.
Think of what happens with a metal case 3 prong plug appliance in the case where the hot wire comes in contact with the case.
If you have a single neutral ground bond the fault current makes its way back to the breaker via the ground wire traversing to neutral at the bond to pop the breaker and clear the fault.
A nice low impedance path to ensure the breaker trips.
A real bad scenario is a person being part of the return path injuring or killing them.
Might not even trip the breaker, just continues to cook them.