Two workers were installing shutters on the windows of a building. One was about six feet (two meters) above the ground on a scaffold. The other began to climb a metal ladder so he could hand an electric drill to his co-worker, but reaching the third rung, he received a fatal electrical shock. Investigators found the drill and extension cord were defective. The third prong, required for grounding, was missing from the extension cord. The frame of the drill was not double-insulated. A conductor on the grounding wire was making occasional contact with the energizing wire. This contact caused the grounding […]