The cause of the failure was human error that happened days before the blackout, when maintenance personnel incorrectly set a protective relay on one of the transmission lines between the Niagara generating station Sir Adam Beck Station No.2 in Queenston, Ontario.
The cause of the failure was human error that happened days before the blackout. Maintenance personnel incorrectly set a protective relay on one of the transmission lines between the Niagara generating station Sir Adam Beck Station No.2 in Queenston, Ontario.