Chapter 2 Safety 35 Copyright Goodheart-Willcox Co., Inc. Summary • Electrical shock and related injuries are caused by electricity passing through the body. • Small increases in the amount of current (amperage) passing through the body signifi cantly increase the severity of electrical shock. • Safe work habits for electricians include proper use of tools, ladders, and personal protective equipment, in addition to following electrical safety rules. • Lockout/tagout/blockout procedures prevent injury caused by accidental energizing of electrical equipment that is being worked on. • Electricians and apprentices must know how to safely respond to help a victim of electric shock. • Identifying and addressing electrical hazards in the workplace is everyone’s responsibility. Internet Resources The following resources provide additional information related to the topics in this chap- ter. Use a search engine to fi nd the company or organization home page and explore the resources available on the website. Electrical Contractor. Magazine and website published by the National Electrical Contractors Association (NECA). Content includes up-to-date information on industry standards, safety, tools and techniques, and other topics for professionals in the electrical fi eld. American Red Cross. Sponsors CPR and fi rst aid certifi cation programs held nationwide. American Ladder Institute. Professional association that promotes ladder safety and develops standards for the American National Standards Institute (ANSI). A source for tips on ladder safety and a handy ladder safety checklist as well as additional resources for related information. MedlinePlus. Website of National Institutes of Health (NIH), containing information on causes, symptoms, and treatment of electrical injuries as well as additional resources. Hand Tool Institute. Information on the safe and appropriate use of specifi c hand tools. Many of the press releases available on this site contain useful information. Power Tool Institute. Information on general power tool safety and tips specifi c to many different power tools. Know and Understand Answer the following questions using the informa- tion provided in this chapter. 1. The amount of current passing through the body is an important factor relating to the effect of an electrical shock. A current approaching _____ is painful and can lead to severe injury. A. 1 mA B. 5 mA C. 10 mA D. 13 mA 2. A(n) _____ fl ash is an explosion that takes place when electricity short-circuits through the air or across inadequate insulation. A. lockout B. arc C. blockout D. insulated