The NRS048-9 specification states that bulk potable water supply points should be exempted from loadshedding where the network allows this. The issue is that the bulk water supply points very rarely have the necessary independent network connections that would allow this to happen, and the water pumps are distributed very widely in the electrical networks, so excluding them would mean unacceptably large amounts of load would not be available for loadshedding, reducing the effectiveness of the loadshedding system as a tool to stabilise the Grid.
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