Quote:
Originally Posted by 77newell
On my 77 coach the ground from the batteries is bolted to the frame rails. One problem with this is the corrosion that can occur between the copper ground and the steel frame. Other than that it works just fine. There will always be a need for a ground to the frame since all the chassis stuff is grounded to the frame and it will not be worth the effort to run wires to all the chassis lights for instance. If the high amperage 12 volt house load grounds are connected to heavy steel frame members that are well connected through the frame then very low resistance will exist, so low that a cable would probably be no better. The only way to know if what you have is OK is to follow the steel path from the attachment point of the load (inverter or other heavy load) to the attachment point of the battery ground cable.
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I'm with you all the way Jon, Your posts as usual are right on the money.