I hadn't been down to the basement to look at his work- here's what we have right now: a Square D subpanel is feeding off the main panel, fed by a metal insulated cable that appears to be close to an inch in diameter. No further work has been done (yet)- he will return later this week. I suspect that when he said he wired this panel in, 'upstream' of the existing box, he really meant upstream of all the existing breakers, perhaps, save for the main power breaker on the incoming service.
The ground wire out of the main box is a massive thing, looks like its multistrand, also probably an inch thick, wrapped in a light grey, rubber-type insulator.
I'll make sure I discuss these postings with him. He has done good work for us in the past, and is pretty meticulous. Perhaps he didn't mean that the ground to the subpanel would be totally isolated, and that the panel wouldn't also grounded to the main house system, but I sure heard it that way.
As to problems I'm trying to solve, well...
The room in which the hi-fi exists is already overcrowded with other equipment for the video system. My preference would be to install the audio only system in another room, but at least for now, that's not possible.
I'm pretty fanatical about the noise level in the system, and have tried myriad ways so far to reduce the noise level at idle. (As mentioned in another post, an industry guy who I respect for his technical knowledge heard the system a couple weeks ago, and scoffed at my complaint that the system was noisy).
In any event, the video system is powered by its own dedicated 240v stepdown transformer. That in turn handles the power for the various 'audio for video' amps and also supplies the juice to a big Richard Grey box which powers the projector, line doubler, and small signal video stuff.
I want the audio system totally isolated from that, and I'm moving the audio equipment (other than the speakers) to another area of the room --partly to get it away from my ears, and partly because the compressor for the Air Line arm can then be stashed in its own little room, isolated from the listening environment.
In doing this, I just want to make sure I have the best possible AC feeding the system. The current demands made by the system are modest. While I am currently using Shunyata Hydras, I'd also like to hook up without them, and see what the difference is. At present, the other outlets in the room are not 'dedicated' and are part of the standard electrical system that was installed in the room about 5-6 years ago, when the upper floors of the house were substantially renovated.
The ground wire out of the main box is a massive thing, looks like its multistrand, also probably an inch thick, wrapped in a light grey, rubber-type insulator.
I'll make sure I discuss these postings with him. He has done good work for us in the past, and is pretty meticulous. Perhaps he didn't mean that the ground to the subpanel would be totally isolated, and that the panel wouldn't also grounded to the main house system, but I sure heard it that way.
As to problems I'm trying to solve, well...
The room in which the hi-fi exists is already overcrowded with other equipment for the video system. My preference would be to install the audio only system in another room, but at least for now, that's not possible.
I'm pretty fanatical about the noise level in the system, and have tried myriad ways so far to reduce the noise level at idle. (As mentioned in another post, an industry guy who I respect for his technical knowledge heard the system a couple weeks ago, and scoffed at my complaint that the system was noisy).
In any event, the video system is powered by its own dedicated 240v stepdown transformer. That in turn handles the power for the various 'audio for video' amps and also supplies the juice to a big Richard Grey box which powers the projector, line doubler, and small signal video stuff.
I want the audio system totally isolated from that, and I'm moving the audio equipment (other than the speakers) to another area of the room --partly to get it away from my ears, and partly because the compressor for the Air Line arm can then be stashed in its own little room, isolated from the listening environment.
In doing this, I just want to make sure I have the best possible AC feeding the system. The current demands made by the system are modest. While I am currently using Shunyata Hydras, I'd also like to hook up without them, and see what the difference is. At present, the other outlets in the room are not 'dedicated' and are part of the standard electrical system that was installed in the room about 5-6 years ago, when the upper floors of the house were substantially renovated.