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Message: <blockquote data-quote="Timber_MG" data-source="post: 1170415" data-attributes="member: 18"><p>I would say the old approach in datacenters used to be a generator on a shaft driven by an electric motor and a local mass/earth that is isolated from a near strike by means of a resistive ladder approach linked to a faraday cage and IT earth topology is perhaps the most effective decoupling approach I've heard of, but the cost and complexity won't be worth it for a home. On some of the PV projects I have seen sub 1 Ohm earths on the opposite end of the installation to make the panel frames earth equipotential but every sparky will have some variation on what they think is best.</p></blockquote><p></p>