DO NOT NOT NOT NOT NOT
clamp bare copper to bare aluminum!
Clear enough?
Unplated aluminum is a time bomb waiting for its last tic...
Those parts are manufactured then within minutes get plated with electrolytic tin. It's not an inexpensive process so it is done for a specific reason. NEMA would instantly reject a current-carrying device of aluminum unplated. Aluminum oxide is the culprit and aluminum oxide forms very quickly on unplated aluminum. Cosmoline (NoOx) coats aluminum and barriers air away.
Rude and crude my tests SUGGEST DeOxit D100 removes unnoticeable aluminum oxide from bare aluminum and further tinkering SUGGESTS DeOxit Shield blocks oxide formation for an unknown length of time. With the hotel I had Siemens box conductors gold plated (don't ask the cost) fifteen years ago. Tinned wires and a mean ass tropical salt air environment.
I can envision a vast majority of these type problems happening because domestic parts are being used in conditions with vibration, aluminum, steel and copper are being forced to expand and contract together and fine strand copper wire does not gain the same elastic pre tension force of building wire. Every last breaker box on the road should be opened up and ALL SCREWS RETIGHTENED. This statement ends with a period. The frequency of this is near stupid. I did it twice on new construction vessels and once on AC RV repair work. Every last initially properly torqued connection was found to be wanting.
After you read this and ignore the advice please save server space and do not wail when it happens ro you. Checking screw torque is fast and easy after shore power and inverter disconnection. Fires burn RVs to the ground including sometimes its occupants. Not funny at all. Get enough PVC fumes in the air and death by asphyxiation is a certainty. Also not funny.
