Grounding help??

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Analogluvr

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Joined 2014
#1
Hi all
About 6 months ago I stumbled across an article about star grounding and I'm pretty sure it was on this site.
Specifically it had instructions as to which order to ground stuff in for the least amount of hum.
Mentally I bookmarked it to go back to when I felt up to the challenge of eliminating the hum in my DIY set amp based on a WE 91B.
Last night I was going to start this but couldn't find the article. Can anyone point me in the right direction?
 
#5
Personally I think some aspects of audio star grounding have become silly and extreme, like a lot in audio it is taken to far by many with little experience of practical grounding and the mechanisms involved.... It is effectively EMC engineering.
🙂
 
#8
audiohandyman said:
I did come up with a fix. The fix may be regarded as a compromise, but I found it to be completely effective. To fix the problem, I replaced the molded plug used to connect the power strip to the wall receptacle with one that allows the power conductors from the power strip to be screwed to the terminals within the new plug. Within the new plug, I connected both the ground wire and the neutral wire to the neutral terminal, leaving the ground connection at the receptacle isolated (with no wire connected). The hot wire is of course connected to the hot wire terminal. The neutral is supposed to be at ground potential anyway and is consistent with how all wiring was years ago when there were no 3-prong outlets. If you take this approach be sure to keep the ground prong intact as this will ensure that the polarity of the plug is kept as it should be. I consulted a master electrician about this fix and he had no concerns about it. However, it would be prudent to check locally as there may be differences depending upon one's particular electric supply.
Click to expand...
You just broke one of the most important rules!
The Safety Ground and the Neutral must (and this is a BIG MUST) be connected together at only one place in the system. That place is the service entrance/main breaker panel. Either the master electrician mis-understood just what you were doing or he's not a master electrician.
 
#9
:cop: Post containing dangerous suggestion deleted per forum policy (Quote left due to inclusion of member warning about this)

Any suggestion connecting neutral and ground together at the receptacle/plug is a violation of NEC, and potentially lethal if either neutral goes open or the connections in an outlet were to be reversed. It is also a shock hazard due to the IR drop across the neutral conductor under high current conditions as that voltage will appear on the case of the grounded appliance.
 
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