Hey Glenn,gullfo wrote:you have a single ground there? and it's connected to the main box ground bar? or the ground is to the grounding pole/pipe? so if you wire wall you outlets in the room with a star ground approach, you should be ok. would be wise to read up a bit on ground loops and avoiding them - in essence having your wires take one route rather than split route around the room will help in this regard. it's also important at this stage to consider what is "clean" (lowest noise, not induction, dimmers etc) side and which will be "dirty" (lighting, dirty outlets for non-audio purposes, etc) so the wiring is kept as consistent as possible. thus later if needed, you could insert some electrical isolation to reduce the noise in the electric.
The green wire you see coming out on the lower right side is going all the way back to the main service panel ground bus bar. The 4 gauge stranded wire you see coming out on the lower left side is directly connected to the ground rod outside the studio.
The green ground wire (coming from the lower right) SHOULD be connected to the ground bus in this sub-panel as well (which I didn't do yet). But my biggest question is figuring out where the star ground tie into this whole picture. Like I stated in my initial post above, I think I screwed up by not having 2 ground wires coming from the main service panel - one to go to the sub-panel ground bar, and one to go to the star ground bus bar.
I have a read a lot of the recourses and papers on ground loops and such, and while I understand the concepts, I'm struggling with applying those concepts to my specific situation.
My plan was to have each receptacle's ground conductor make a "home-run" all the way back to the sub-panel to the star ground point, so each ground conductor would only be connected to it's respective receptacle and the star ground point... no other connections, and one clean line straight back to the sub-panel.
I mentioned using one leg for "clean" electricity and the other for "dirty" electricity to the electrician, and he advised against it because he said it would create a really unbalanced situation. If the mini-split, ERV, fridge, lights were all on one leg, that leg would be pushing far more power than the other leg which just had audio equipment. Does that make sense? Or is that not something I should be worried about?
including my model of a TD-3 drum kit 
). people add them to their own collections, link to them, download, etc. it's why i freely publish them 