We only have one supply house in town and they carry Siemens ITE. They have their stock loadcenters in either copper or aluminum bus. If you order tubs with interiors that take bolt-ins they are usually plated copper bus. I started dealing with a supply house in a neighboring town last year that carries GE Powerline Gold Series loadcenters. They come standard with tin plated copper bus, even the stab-in loadcenters. SQD QO loadcenters are all plated copper bus. SQD Homeline are aluminum only. I prefer copper and in situations where the loadcenter is in an unheated area, I prefer the plated copper bus.
