splicing aluminum to copper elec wire

Thanks for the update. When I bought the hotel panel they looked at me like I was nuts when I asked for copper. So did Consolidated Electrical Supply in California. Maybe they're getting smarter. I bought that Siemen's panel in Port Arthur Texas. I subsequently purchased twenty feet of pure copper ½" square rod then spent a weekend drilling and tapping. Finding 316 stainless knurl tip Phillip's set screws was done through McMaster Carr. My Hot Lipps graphite squeeze solder tool will help install #6 x 10 gauge forked terminals for the nickel plated 20 amp receptacles when I return home. They will be installed under weather proof enclosures with insulated flap exposed receptacle boxes. My casita has an inset kWh meter and interior Klixxon breakers just like the bus. But with blinking LED tripped lights. Amazing what a fault wired panel illumination LED light can accomplish. The lamp breaker faults and the panel lights up. This is being done so kitchen appliances can walk and chew gum. I.E. coffeemaker, microwave and toaster all together.