Thanks, Jack… sorry for the lagtime. The plate is attached to what little frame there is, with a single, soldered 10ga ring terminal, so my thinking was/is that it’s now just mimicking a much larger frame, in the event the inverter would function better than just connecting the device ground to...
Thanks for your input. It’s a bit different (I think), in that the battery negative is the ground, in the absence of a sustantial chassis ground. I’m leery of creating a negative loop in the place of a true “chassis” and its accompanying surface area.
The comparison to a capacitor is but figurative, to establish my concept. The surface area is intended to mimic the surface area of a non-existent chassis, to convince the unit that it’s not mounted in a fat-tire wagon, on a beach. I’d like it to be happy, in its humble ignorance.
I’ve installed an inverter, 12v to 120vac. The inverter has a post meant for grounding to the vehicle chassis. No chassis or other ground is available in this application for the inverter to recognize. I’ve homebrewed what amounts to half of a large capacitor. There’s just one “plate”, with the...