Residents at Copley Manor Apartments on the 100 block of W. Tulpehocken Street in Germantown were evacuated late Tuesday after a power outage.
Fire officials on the scene tell NBC10 a transformer blew, disabling power to the building.
200 people had to leave the building. The Red Cross assisted a handful of residents at Germantown High School, but the majority of residents had someplace else to go.
Power was restored just before 4:00 a.m. Wednesday and residents were allowed to return home.
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