?

Your road analysis is accurate. Is it safe?? Probably, provided that the overall setup doesn’t overheat.? Just because all roads lead to one doesn’t mean there’s an issue if the accumulated loads don’t exceed that one lane wire’s current flow rating.? Since it’s a short length of wire, there’s little line resistance to current flow, which is the cause of overheating.

So, how does one insure that there’s no overheating?? The propensity to overheat comes from at least two sources: too much amperage draw through an undersized wire as described above, and heat produced by bad or dirty contacts between wires.?

1.???? When a single wire, such as that white one-lane road into your converter, is loaded with multiple loads, the single wire can overheat, since its resistance in the face of a large current could be enough to heat and soften its insulation, potentially baring the wire inside the insulation, which could short to a nearby power source.? But a short would likely pop a fuse, ending the threat.? This possibility hinges on whether all of the various loads are operating at the same time.? Since there’s no way to insure that the loads are being managed, one should ideally design the wiring to handle all loads simultaneously.

2.??? When a wire is connected to another wire or to a circuit board, the connection itself is a potential heat generator.? A poor solder joint inside the converter could potentially overheat, but that’s not as likely in my experience as overheating caused by an external connection, such as that huge wire nut collecting all those white ground wires.? Wire nuts were invented to bind solid wires, such as those in the Romex cable inside your home, and NOT to bind stranded wires, such as those in your camper. The solution for the huge wire nut is to connect each ground wire to a buss bar, so that each wire has its own mechanical connection point.? Then run a parallel ground wire (another lane, if you will) from the ground buss bar to the ground connection inside the converter.? This will require partially dissembling the converter and some soldering skills. (And, while we’re talking about connections, those boxy quick splice connectors that penetrate insulation to make a connection are a prime source of heat and corrosion related connection failure, and should never be used in a camper, period!? Use a wire buss bar, solder or crimped butt connectors instead.)?

?

Dave

?

…………………….

?

Using your highway analogy, right now, it appears I have half a dozen one-lane roads all feeding into another one-lane road that leads all the way into the city, and it seems like that would result in more crashes and overall congestion. I don't care about anything other than, is this installation *safe*?