Seeing the post a bit earlier, reminded me of this, previous Googling got nowhere. Does anyone happen to know what height above ground level would its flood protection bus-bar cut out system engage in a regular residential area 240V distribution transformer? Our lowest local one ground level is 5.8m (Cd) and the tide level 08 April 2024 of the report below , got to 5.7m Cd. Also what level SSEN would remotely disconnect a whole area on the predicted elevated tide level issued in an EA flood alert, relative to such a ground level, to pre-emptively protect their above ground kit.
Starting point report from last year
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"For safety reasons, and on the advice of SSEN (Scottish and Southern Electricity Networks), power was shut off at Hamble Point Marina due to the three sub-stations that also power the submersible pumps being partially below water level. The submersible pumps across the site were operating until the power was isolated."