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- 27 Jan 2008
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Normally solar panels auto power down if grid tie is lost, but with a battery one can have the option to use the solar panels and battery during the power cut to power freezers and central heating and lights, it that option is done, will it need an earth rod? And if earth rod fitted, will it need to be disconnected before connecting to a TN-C-S supply? Or does it just rely on the rod being a high resistance to ground so limiting current flow with loss of PEN?