Hello All,
I am building my first amp and using a star grounding system. The speaker protection relays are suggested to go to that grounding point. My relays will be mounted to the rear panel next to the outputs.
Can I simply use the same mount lug that I secure the short "earth" wire from the IEC socket to the chassis? Since that same lug is tied directly to the same star ground point itself, would doing this create a loop of some sort that I am not visualizing?
Cheers,
David
I am building my first amp and using a star grounding system. The speaker protection relays are suggested to go to that grounding point. My relays will be mounted to the rear panel next to the outputs.
Can I simply use the same mount lug that I secure the short "earth" wire from the IEC socket to the chassis? Since that same lug is tied directly to the same star ground point itself, would doing this create a loop of some sort that I am not visualizing?
Cheers,
David
Star grounding is intended to keep your “clean” grounds clean. This means you also have some “dirty” ground(s) separately returned to the star. Non critical items like speaker relays and fans can return to any of those “dirty” grounds. How they get there is unimportant. Pick up a few millivolts of ripple in the relay return and no one is ever going to notice.
Ty wg_ski. I appreciate the feedback and that makes good sense.
Anyone else care to chime in?
Cheers,
David
Anyone else care to chime in?
Cheers,
David
> use the same mount lug that I secure the short "earth" wire from the IEC socket to the chassis?
That's not allowed in commercial gear. There should be NO reason to disconnect the safety bond. But some future repairperson fixing the protection system might forget to put that wire back. There should be another chassis lug.
It is not enforced in DIY, and may never make trouble, but best Practice.
That's not allowed in commercial gear. There should be NO reason to disconnect the safety bond. But some future repairperson fixing the protection system might forget to put that wire back. There should be another chassis lug.
It is not enforced in DIY, and may never make trouble, but best Practice.
TY PRR,
I was not aware of or thinking about it from that stand point. I can certainly either add a second lug or just take the grounds back to the start point. I don't want to be less than safe for anyone.
Cheers,
David
I was not aware of or thinking about it from that stand point. I can certainly either add a second lug or just take the grounds back to the start point. I don't want to be less than safe for anyone.
Cheers,
David