A worker was electrocuted when he drilled through a wall and the drill bit contacted an electrical wire inside the wall by cutting through its insulation. The ground pin of the electric plug for the drill was broken off. Describe several ways this fatalit

A worker was electrocuted when he drilled through a wall and the drill bit contacted an electrical wire inside the wall by cutting through its insulation. The ground pin of the electric plug for the drill was broken off. Describe several ways this fatality could have been prevented. 

Your response should be at least 250 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying citations.