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In Reply to: RE: another BGT question posted by jea48 on January 30, 2016 at 07:37:43
Thanks for the responses. I've read in other posts that floating the power cord ground wire, then replacing it with an external ground wire from the chassis still grounds the chassis the same way, just in a star type configuration, whereby its ground is at the wall before all the other grounds in the line conditioner.
The little screw in the faceplate is mechanically connected to the green ground wire of the outlet.
What this has to do with the BGT is: will the bgt effect actually affect the audio circuit or just be shunted to ground.
My guess is it will still be effective, as it seems to "charge" the whole ground circuit. All other components have chassis ground as well, just my preamp does it through an external wire.
Edits: 01/30/16Follow Ups:
I've read in other posts that floating the power cord ground wire, then replacing it with an external ground wire from the chassis still grounds the chassis the same way, just in a star type configuration, whereby its ground is at the wall before all the other grounds in the line conditioner.I see no difference. Other than the example I gave about the ground wire in you power cord being corrupted by induced voltage from the hot conductor inside the power cord. Is your power cord a home brew or an OEM? Usually the construction of an OEM 3 wire power cord cancels out any chance of the hot conductor inducing a voltage onto the safety equipment grounding conductor, wire.
The little screw in the faceplate is mechanically connected to the green ground wire of the outlet.
Correct but is not designed by the manufacture of the receptacle to be used as making a good solid connection to the equipment grounding conductor of the in wall branch circuit wiring equipment ground wire. The U shaped equipment ground contact of the receptacle is designed and manufactured to carry the full ground fault current in the event of a ground fault event/condition through the metal back strap of the receptacle to the green ground lug screw connection where the branch circuit safety equipment wire is connected.Food for thought, for a typical 20 amp branch circuit in the event of a dead short ground fault condition, where the hot comes into contact with the safety equipment grounding conductor or the metal enclosure the ground wire is connected to, well over 100 amps could travel in the ground fault circuit before, hopefully, the 20 amp breaker protecting the branch circuit trips open. How well will your equipment ground connection to the 6/32 trim screw hold up?
What this has to do with the BGT is: will the bgt effect actually affect the audio circuit or just be shunted to ground.
Has absolutely nothing to do with the safety equipment ground. The BGT tweak does not use or need a safety equipment ground to do what it does. If it did how would it work on a piece of equipment that doesn't use the safety equipment ground?
My guess is it will still be effective, as it seems to "charge" the whole ground circuit. All other components have chassis ground as well, just my preamp does it through an external wire.
My understanding of the BGT tweak it does what it does to the signal ground of the piece of audio equipment. I has nothing to do with the safety equipment ground of the branch circuit.
I wish the guy that stumbled/come up with the tweak would have never used the word ground in naming his tweak. (Sorry I use to know the guy's name. For some reason I think his first name is Bud.)
Edits: 02/02/16
Ok, so I'll connect the BGT to signal ground rather than chassis ground.
The PC with the lifted ground is a triode wire labs running to the preamp.So then, the ground post on the preamp is provided for what purpose?
Edits: 01/30/16 02/09/16
So then, the ground post on the preamp is provided for what purpose?
If the preamp has an internal/onboard phono preamp the ground terminal is used to connect the ground wire from a turntable.
A 2 wire power cord and plug preamp with an onboard phono preamp also has a ground terminal for the turntable ground wire to connect to. The signal ground of the preamp is connected to the metal chassis of the unit.
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