Letters

摘要

The need for new electrical outlets in my garage ceiling had me working on the project with a friend. He is a bit younger and offered to climb the ladder. I assured him he was cutting into drywall far from any live wires. Standing on a metal ladder, further grounded by its contact with a boiler, he began to trace the ceiling-box outline with a utility knife. Suddenly, his body jerked, and he nearly cut me as his arm swung wildly. After he told me he had gotten a strong electric shock, I could only wonder what had happened. Convinced that there were no wires in the area, but being cautious, I began probing the new hole in the ceiling. Aside from drywall, insulation, and wooden joists, nothing was present that could have caused the current to enter his body.