Properly connecting an isotaion transformer

What I just had done (still not hooked up to the outlets) is to have a separate 100 amp subpanel away from my main panel for the house and run four separate lines from it, 2 20 amp lines for my amps/active speaker crossovers and two separate 20 amp lines for my front-end components, one of which source component lines has an isolation transformer between the box and the outlets that I will use exclusively for my digital components. I originally wanted to put the isolation transformer between the main box and the subpanel to isolate it from the rest of the house's electrical system, but the electrician said it would not pass code because the transformer wasn't rated for 100 amps. So I figured that the next best thing would be to try to isolate the digital components from the rest of the system to keep the digital garbage from getting back into the rest of the system. Not sure if this is the absolute best way to do it, and ultimately might still want to isolate the subpanel, but this is the way that logically made sense to me. I'm interested in seeing other responses to this thread.

Since I have a Hubbell 8300igi duplex connector that terminates my dedicated 20amp circuit, could I plug a seperate isolation transformer into each of the plugs? Could this be a configuration to seperate my analog devices from my digital off of one dedicated circuit?

Vman: You can do exactly as you stated and achieve good results. The key here is how good the isolation transformers actually isolate their output from the line and whether or not the transformers & dedicated line are up to passing enough current without signal degradation.

For best results, isolation transformers should have a noise reduction of -120 dB's, very low capacitance and never be asked to deliver more than 60% ( 75% at max ) of their rated output. This would mean that a 2500 watt ( 2.5 KVA ) transformer should be run below 1500 watts of steady state draw with peaks held to below 1875 watts ( slightly over 15 amps ). These figures incorporates a "fudge factor" in terms of headroom if manufacturers are being a little "liberal" with the power ratings of these transformers. Otherwise, running an isolation transformer at or near rated capacity will actually introduce non-linear distortions into the system, defeating the purpose all-together. Sean
>