Start at the beginning,ie circiuit panel with a environmental potentials 2050.Look at their website and it says that probably 90% as you suspect comes from your own house.I have this unit and its a great place to start as it also helps with all of the other electronics you may have as well as surge protection,etc.,especially for those who are running tesla coils for educational and recreational purposes(ha).
Power Conditioning: How Do You Know You Need It?
Like many, I have been considering whether to purchase a power conditioner (e.g., PS Audio Power Plant Premier), that sort of solution for electric noise. Accepting the premise that cleaning the AC will improve the sound, how do I know whether I actually have a problem that needs to be solved? That is, how do I determine whether the AC coming out of my wall outlets is actually dirty, before dropping two large on a device that I might not actually need? Living in Chicago, I would *assume* my electricity is as dirty as it gets, but how would I *prove* that before investing in a power conditioner? And I suspect the real issue may be noise occurring *inside* my home, like my WiFi router, energy-saving compact fluorescent lights, the 6-foot tall Tesla coil I keep running 24/7 "just in case" next to the hamster cage, etc.