Popular Post Audiophile Neuroscience Posted August 22, 2020 Popular Post Share Posted August 22, 2020 Obviously if the component is meant to be grounded, as in connected to safety earth, it must be connected to safety earth. Some items are double insulated and are designed not to need the safety earth connection and they lack the third pin on the plug. It's the double insulation layer that provides the protection against electrocution. I'm not exactly sure why this is the case in domestic situations but for example I gather many toasters would fit into this category. Portable generators I gather should also be double insulated and that makes more sense to me given the circumstances of their use. However, once that double isolation is breached for some reason risk of electrocution occurs. Residual current devices that often form the "safety breaker" rely on connection to safety earth system which is both in place and functioning. In the case of generators you can get Residual Voltage Devices which work on a different principle. I have one of these for my portable Honda generator (which is double insulated). I had an electrical engineer install a "technical earth" such is typically used in hospitals apparently. The whole thing about common mode and differential mode noise rejection in audio, which end of the cable shielding to disconnect et cetera et cetera is better left to people like John Swenson @JohnSwenson and recognised (not anonymous Internet posters) others that know what they are talking about IMO Basically, I would be very reticent to accept any advise (including from me) about grounding from other than qualified electrical engineers or at least people with a strong technical background at a professional level. Qhwoeprktiyns and 87mpi 1 1 Sound Minds Mind Sound Link to comment
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