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Original poster: "Glen McGowan" <glen.mcgowan@xxxxxxxxx>
I'm building a TC from the attached schematic. From the looks of the
drawing I'm double grounded. The secondary is grounded to the mains
and earth. The NST's are all grounded via a shared grounding plate
which is mains grounded.
C1 and C2 are there to limit noise fed back into the house wiring
(some of it at least). I understand that grounding the secondary to
the grounding plate can produce lethal currents but is there any
advantage to doing this? This may be a rhetorical question. I assume
the secondary would "choose" the earth ground before it reached the
mains ground because earth would be the shortest distance. But
according to the drawing the NST's HV and LV's are both using the
mains ground as is the secondary (has a "choice" of using mains or earth).
I apologize if the post was hard to follow. I've scratched the same
spot on my head for the past hour. It's starting to bleed.