That argument would hold perfectly if services where suspended to Bray
But the power was on in Bray station on at least one platform since DART's where operating to Bray, its a continuous circuit with isolatable sections since its a DC system
If you pull the plug on the substation in Bray, normal services Bray to the north are possible and you can run a 2 car train back and forwards to Greystones, if the substation in Greystones dies but Bray is online same applies
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