Appreciate all the details in your reply, Steve T.
The DC Aux outlet in question is the one inside the reefer cabinet, specifically for powering the reefer. Per the dealer who handled the original warranty replacement of the fridge, while the label says 5A peak draw, the mfr told the dealer they "can" draw more than 10A (the dealer said, they seemed to think this was "normal" and acceptable.) I based my estimate of 15A on the fact that the replaced fridge melted a 10A socket and wires on the RV electrician's workbench. (This fridge has now been replaced under the dregs of warranty. Don't know what the replacement will do, yet). And, again - hot lead is 10AWG, and potentially fridge can pull more than 10A. Since all these wires are in the open against bare wood, I'm inclined to over-engineer. (It's a short distance draw in an existing wire channel; possibly I'd feel different if we were talking 25' and cutting new holes).
I've finished tracing the 14AWG neg lead and it goes back to a massive cluster of neg leads wire-nutted to a 10AWG neg on the back of the converter. As you described. I know the circuit works already. My concern now is - all those other neg leads daisy-chaining into this one 14AWG negative lead back to the converter. That seems unwise to me. But complicated because apparently, with quick splices, the wires should be the same gauge.
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*?
Thanks for all the help!
-lashru
