Electrical Shock while Operating a Portable Drill at a Construction Site

摘要

In july 1982, an embassy building was under construction in Washington, D.C. A stainless steel handrail was under construction adjacent to and above a sloping garage entrance. A journeyman ironworker was operating a portable 1/4-inch electric drill in connection with the handrail installation. It was a heavy-duty 1/4-inch industrial drill, with a 6- to 8-foot power cord, terminating in a three-prong plug. The plug had been inserted into the receptacle of a 100-foot-long extension cord, which was lying on the ground and owned by the ironworks subcontractor.