8 April 2015. An equipment failure is to blame for a region-wide power outage that impacted the White House, the Capitol, the University of Maryland and other buildings throughout D.C. The equipment failure happened at a power switching station in rural Charles County. The station is owned by Pepco and SMECO. At about 12:30 p.m. one of the ceramic insulators fell to the ground, causing a fire as it hit a 230-thousand volt transmission line during its fall, according to a Pepco spokesperson.

WUSA 9

http://www.wusa9.com/story/news/local/2015/04/07/power-outage

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