Abstract: An employee was cutting a section from a 76-millimeter-diameter (3-inch-diameter) copper pipe with a Milwaukee portable electric band saw. He was standing on a plank 3.5 meters (11.5 feet) above the floor. He had previously cut into the pipe without draining the water from it, and the band saw became wet and developed a ground fault. Other employees, who were working at ground level, added an ungrounded extension cord to the temporary circuit, breaking the continuity of the equipment grounding conductor. When the first employee picked up the band saw, he received an electric shock and yelled to the other employees to unplug it. When they did, the injured employee fell to the floor. The ground-fault circuit interrupter in the temporary circuit failed to open the circuit in response to the ground fault. The employee died of electrocution.