Article updated: 2/8/2013 6:45 PM

Super Bowl blackout was caused by electrical relay

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A power company says the cause of the Super Bowl blackout was a faulty device that had been installed to prevent a failure of electric cables leading to the Superdome.

Associated Press

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The company that supplied electricity to the Super Bowl says the blackout that halted the big game was caused by a device it installed specially to prevent a power failure. But the utility stopped short of taking all the blame and said Friday that it was looking into whether the electrical relay at fault had a design flaw or a manufacturing defect.