Folks who watched the Super Bowl may recall that Entergy quickly announced that it had continuously delivered power to the dome and was not at fault for the 35 minute power outage.
Turns out otherwise. From Slate:
The device that malfunctioned was apparently installed by the power company specifically in hopes of avoiding an outage.Reuters:
The device was specifically installed to protect the Superdome’s equipment in the event of a cable failure between the switchgear and the stadium, Entergy said. The relay had functioned without issue during a number of other events, including the New Orleans Bowl, the New Orleans Saints-Carolina Panthers game, and the Sugar Bowl. But during Super Bowl XLVII on Sunday, the relay device triggered, signaling a switch to open when it should not have, causing a partial power outage in the building.
In the immediate aftermath of the blackout, Entergy was quick to deflect any possible blame for the outage. The utility said that all of its equipment had worked properly and that the issue was instead likely caused by some other flaw in the Superdome. Later that same night, however, the utility issued a joint-statement with the firm that manages the stadium announcing that they’d launch a full investigation into the matter to find out what went wrong.