1. Place a "Power Switch" room and a power generator room. 2. Place rooms that are only powered while the "Power Switch" has closed (green) circuit breakers. 3. Click on a green circuit breaker, in order to break the power grid circuit. 4. Observe that the rooms has lost power. 5. Click on the, now red, circuit breaker to re-establish the circuit. 6. Observe that the rooms are still showing as unpowered. 7. Place a piece of power grid anywhere. This causes the power grid to update. 8. Observe that the rooms now have power.
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