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In Reply to: RE: grounding questions.... posted by vinnie2 on April 28, 2015 at 05:23:34
As long as you join all of the house grounds to one point you should be fine.
You should make a power supply chassis with all power transformers centralized in one spot. Then you can distribute the power to the amp(s) from there. Putting power supplies in different chassis can open you up to un-expected loops, however, you can really make any arrangement work with care.
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I must not have explained the set up clearly. All power transformers are in one spot, on the psu chassis. What I am wondering is if both mains chords going back to a common multi-outlet is the equivalent of all the grounds going back to one spot.
Edits: 04/28/15
You should not have a ground loop issue if you tie the earth grounds together at the same point in the power supply chassis. Alternatively, you could just use one power cord to bring AC to your chassis
Can't do that and use the variac to adjust the B+. Might have to tag on a small variac outboard style.
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