Dedicated line questions...

Congrats. Please do report back!

I have read through this post and I noticed some folks here use both lines from the distribution panel.   That is, line 1, line 2, neutral, and earth, such as would be wired when using the Southwire 10 awg, 3 wire.  Since line 1 and line 2 are opposite in phase for North America (and anywhere else where split phase lines are used) that means hum is more likely to occur since the outlets are no longer identical polarization.   If you are using an isolation transformer and feeding it 240 VAC then stepping it down to 120VAC, then this doesn't apply.   But if you don't have an isolation step down transformer, then you might get some hum.   I see the point for 10 awg wire and a dedicated line, but I don't see the point for using both lines without a transformer.   That really is counterproductive.

This is an example of a isolation transformer, step down.  Feed it 240VAC in and get 120VAC out at 2x the current capacity.   https://talema.com/wp-content/uploads/datasheets/MD.pdf   This is not a plug in product btw, this is either DIY or look for an equivalent factory made unit you can just plug in.

@spatialking... that is essentially what the Decware ZLC is. I have looked at the reality of installing a line from my breaker to where I need it, and it would be a serious PITA to run new cable to that area. Basically across the entire house, in the attic, through vaulted clients etc. no way to go under...