The worst source of hum and main thing to avoid is plugging components into different legs. The three utility cables coming into the box are two hot leads and one utility neutral or ground wire. To this you add one earth ground. The two rows of breakers in the box, each row connects to one of the hot legs. Whichever leg you use, make sure all your system components connect to that leg. Single most important thing you can do.
The above can be done with as many circuits as you want. Next step up from this is to run only one circuit sized to power the whole system, with only the conditioner plugged into it and everything running off the conditioner. This leaves you one unconditioned outlet to plug in the occasional extra item, compare conditioned vs unconditioned power, etc.
The next step up from this is to drive an extra ground rod dedicated to the one system circuit. By this point though you are really splitting hairs or getting into a realm where details matter. Like it may make a big improvement, little or none, or maybe even be a little worse. At this level you start to discover things you never were aware of before, like some manufacturers don't even use that third ground- oh they may use a three prong plug, but that third ground one isn't connected to anything! Floating ground they call it.
Now going even beyond this you get into things like cryogenic treatment. Which if you are going to do this do it now, way less work than pulling the wire and redoing. I'll give you one guess how I know that.... and yes it is worth the trouble. Or if you're confident and knowledgeable enough you can make your own fuse of pure cryogenically treated silver wire to eliminate the crappy circuit breakers altogether. But I would never do that. Oh no. Not me. Nor should you.
Okay I will stop here and let someone else tell you all about which connection conditioners to use....
The above can be done with as many circuits as you want. Next step up from this is to run only one circuit sized to power the whole system, with only the conditioner plugged into it and everything running off the conditioner. This leaves you one unconditioned outlet to plug in the occasional extra item, compare conditioned vs unconditioned power, etc.
The next step up from this is to drive an extra ground rod dedicated to the one system circuit. By this point though you are really splitting hairs or getting into a realm where details matter. Like it may make a big improvement, little or none, or maybe even be a little worse. At this level you start to discover things you never were aware of before, like some manufacturers don't even use that third ground- oh they may use a three prong plug, but that third ground one isn't connected to anything! Floating ground they call it.
Now going even beyond this you get into things like cryogenic treatment. Which if you are going to do this do it now, way less work than pulling the wire and redoing. I'll give you one guess how I know that.... and yes it is worth the trouble. Or if you're confident and knowledgeable enough you can make your own fuse of pure cryogenically treated silver wire to eliminate the crappy circuit breakers altogether. But I would never do that. Oh no. Not me. Nor should you.
Okay I will stop here and let someone else tell you all about which connection conditioners to use....
