To enable star grounding.
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Great and thanks for the reply. I also have read about a switch to lift the grounds with a capacitor in the series. I figured that if I had some hum issues, then I would go back in and alter the wiring.
I have a lot of copper sheet around due to my other hobby (making copper and silver jewelry) and figured that I'd use some of that to make a star ground. Heck, I might even cut it into the shape of a star just for kicks.