mesch, makes absolutely do difference. In order to isolate your system from everything else your would have to have the power company install a separate high voltage transformer on your lawn and run a second main from that to run the system, just a bit absurd from a financial standpoint.
For good equipment it does not matter. I have a three phase workshop in my bottom floor. I can run the phase converted, stop and start machinery and you can hear the tiniest click in the system. All of this is running off the same main. The power company did make me get my own transformer but this was to isolate my neighbors from me, not me from myself.
For good equipment it does not matter. I have a three phase workshop in my bottom floor. I can run the phase converted, stop and start machinery and you can hear the tiniest click in the system. All of this is running off the same main. The power company did make me get my own transformer but this was to isolate my neighbors from me, not me from myself.