Power Conditioning / Surge Protection

spatialking285 posts11-07-2020 6:07pm"....The "inductor in parallel with the line" term must mean in series with the line, since it is counter productive to put it in across the line, and in parallel means the line is shorting it out.  If they mean something else, then it is not in parallel with the line."

The SoundStageNetwork and Stereophile reviewers (see links above) both state that the inductor is wired in PARALLEL with the AC line. An interesting departure from more modern designs in which series-mode surge suppressors use an inductor wired in series with one leg of the AC line. 

Yeah, I still believe his is marketing wording talking here. 

Given how an inductor works, putting it in parallel with the line is counterproductive.   The word "Parallel" here means connected from Line to Neutral or from input to output with the grid wire shunting it.   Either way, it is counterproductive - in the first case, inductors don't work that way, in the second case, it is effectively out of the circuit path.   

They could, and probably do, use a common mode inductor, which would explain using the word balanced, but the two inductors are still in series with the load, not in parallel with it and definitely not in parallel with the grid line.  The RFI capacitors, MOV's, resistors, GDT's, voltage clamping diodes, will all be across the line. that is, connected from line to neutral.

Reviewers often quote manufacturer's literature in their discussion, so the fact that reviewers state the same thing doesn't mean they verified the claim using standard engineering electrical terminology. 

@audio2design, 
Though I am not conversant with electrical design, I can see you are.
Trying to get through to some members is like 'preaching to the choir'.
Bob

For what it’s worth, I use an RGPC to distribute power to all of my source components including my new LG OLED. The RG plus a Shunyata cable made my old Sony 2K pop with great blacks, etc. Unfortunately, almost unbelievably, this new LG comes with a hard wired ac cable. I’m sure it appreciates the RG to plug into. My power units all plug straight into a dedicated line, but I’d sure like to try a Niagara on them some time.

Lots of interesting commentary here. Much appreciated. I actually called RGPC and spoke to Alex.  He couldn’t have been more helpful. Using serial numbers he was able to determine that I have one of the original predecessors to RGPC 400 Pro. He sent me a ton of information on how they work (as both a power conditioner of sorts and a surge protector) and the best way to use them. (Recall in my original post that I bought them years (20 or so) ago after being upsold by a now out of business stereo store.) I never really understood how they worked and what they were really for other than surge protection. Now I know a lot more. For now I am running my digital equipment (CD player, server, streamer) through one RGPC and running my turntable, phono preamp and integrated amp through another. Both are plugged into a dedicated circuit. I also have a whole home surge protector so I feel pretty good about my gear being protected. 
With all that said, I have also preordered the Niagara 1200. When that comes in, I will use it for my source equipment and amplification and use the Richard Gray’s for my subs which are currently plugged into non-dedicated wall outlets. The sub cord cords aren’t long  enough to reach the Richard Gray’s now but that won’t be a problem when I get the Niagara and can dedicated a Richard Gray to each sub. Very excited to see how this all turns out.