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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: PhasePosted by Paul S on: 11/21/2015
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John mentioned phase issues. In the US, a residential service it typically referred to as "single phase 240V". For hi-fi it is well to note that US (and similar) 240 is "split" at the service panel into 2X 120V rails that have 180 degree phase shift. For most of what we do with electricity this is not an issue. However, it can be in issue for hi-fi. It tends to work best for us if we can bring in either one "heavy" circuit, or, in the event of 2 or more circuits, we use the same 120V "leg" for all circuits that serve the system, As for grounding, I'm presently settled with all components on a single "neutral" wire back to the mains ground, along with 1 dedicated "bleeder" ground for cable and SUT shielding. In other words, I do not use the house "safety" ground" wire for hi-fi (this wire being the usual US green "third wire" at each modern outlet). Of course, there might be problems with induction (and resultant noise) any time there is more than one path to ground. And the only way to be sure is to try it. It's also helpful to use a dielectric at mechanical ground connections (those that are not soldered).
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