Abstract: On September 27, 2002, Employee #1, the foreman, and a coworker were checking for leaks in a newly re-covered roof. It had been raining and both the men and their clothing were wet. While checking for a leak in the area of the #2 substation, Employeee #1 opened a cabinet to see if there were any signs of water inside on the concrete roof pad. At approximately 9:15 a.m., his wet metal hammer contacted a portion of the energized 12,470-kilovolt switchgear, and he received an electric shock. The coworker was underneath the roof at the time of the accident, but he heard the noise of the arc flash and noticed that all the power in the facility went out. When he went to the rooftop to investigate, he found Employee #1 lying next to the cabine,t with burns over the upper half of his torso. Employee #1 suffered third-degree burns to both of his hands, and second- and first-degree burns to his arms, shoulders, and neck, and first-degree burns to his head and face. He was transported to the hospital, where he was treated for two to three weeks.