Abstract: An electrician was installing a Prescolite EFP5 emergency lighting ballast in an automobile tool room in a vocational education building at a prison. He had pulled the ungrounded circuit conductor from a T-type conduit body located 4.4 meters above the floor. He was standing on the seventh step of a 3-meter-tall fiberglass and aluminum ladder. To gain access to the conductor, which was to be connected to the ballast, the employee had climbed between a lighting fixture that was 3 meters above the floor and a 102-millimeter-diameter metal pipe that was 3.7 meters above the floor. He was also working around a metal sprinkler pipe. The employee, who was not wearing rubber insulating gloves, contacted the 277-volt conductor, received an electric shock, and fell to the floor. He was electrocuted.