I did one studio for my brother. The building was already on a subpanel seperate from the house. Surge protectors were used in the sub panel and main panel. We used 20a 12g circuits for recepticals. They were not dedicated or isolated ground. The recepticals were not shared with anything elce. I think he had a power conditioner as part of his sound board. No Dimmers or floresent lights in building. No problems.
