alt Hacker News(And this is intentional to avoid electrocuting line workers who are working to fix the grid when it breaks)
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Analemma_ • yesterday at 3:13 PM
No, it's more than that, it's not just a safety feature that you could disable: the plug-in panels need an existing waveform to synchronize to, if the grid is dead they can't produce an AC voltage signal on their own.
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Line workers ground everything before they touch any conductors, except in some cases where they intentionally work "live."