We are in the process of updating our 1930's fuse-laden mains box to a current vintage circuit breaker-laden one. I have been getting great input from @Kingrex and other contacts in audio world. We are going to be running 6 gauge wire from the mains box to an audio room dedicated sub-panel in our basement. We plan to use 10 gauge wire from the sub-panel to audio room receptacles. Regarding 10 gauge wire, does anyone have experience or thoughts on solid core vs. stranded?