"NB Never daisy-chain earth wiring: Wire all the Earths back to a central connection (Star-grounding), which is connected to Mains Earth - this also serves to protect you in case of an electrical leakage / short" This is good. I've heard about the star ground, but never heard what not to do such as: daisy chain grounds. That is no good. One thing to avoid. https://electronics.stackexchange.com/questions/643007/understanding-why-daisy-chaining-causes-ground-loops-in-this-setup has an explanation, though I don't really need one. Is there another ground type besides daisy chain / star grounding...? There's this but it's not well written. https://eepower.com/technical-articles/single-point-and-multi-point-signal-grounding/