1. Ferris State University & Michigan Department of Career Development 1 Electrical Safety Study Guide

2. Ferris State University & Michigan Department of Career Development 2 Introduction What percentage of American workforce is injured by electrocution each year? Note: Based on Bureau of Labor and Statistics

3. Ferris State University & Michigan Department of Career Development 3 Electrical Safety What is the most widely used form of energy in most facilities?

4. Ferris State University & Michigan Department of Career Development 4 Introduction What are the Michigan rules regarding electricity?

5. Ferris State University & Michigan Department of Career Development 5 Voltages What is the most common voltage used in the hospital setting?

6. Ferris State University & Michigan Department of Career Development 6 Electrical Hazards What does 29 CFR 1910.303(b)(1) state?

7. Ferris State University & Michigan Department of Career Development 7 Electrocution A current between _____ and ______ miliamperes can cause ventricular fibrillation in the heart. What is a miliampere?

8. Ferris State University & Michigan Department of Career Development 8 Ventricular Fibrillation Ventricular fibrillation can happen due to a small current passing through the body in what ways? A. B. C.

9. Ferris State University & Michigan Department of Career Development 9 Electrocution How many mAs may it take to cause ventricular fibrillation?

10. Ferris State University & Michigan Department of Career Development 10 Voltage  Define voltage:  What is voltage measured in?

11. Ferris State University & Michigan Department of Career Development 11 Voltage What term is used for the stated voltage for a given line? (Example: a 115 volt circuit may actually be 120 volts but is called 115 volts nominal)?

12. Ferris State University & Michigan Department of Career Development 12 Current Define current.

13. Ferris State University & Michigan Department of Career Development 13 Current What are two different types of current?

14. Ferris State University & Michigan Department of Career Development 14 Current What is the amount of electricity that flows in a circuit? What is current measured in?

15. Ferris State University & Michigan Department of Career Development 15 AC and DC What does_____mean? AC DC What does most existing equipment run on?

16. Ferris State University & Michigan Department of Career Development 16 Resistance  What opposes the flow of current measured in Ohms (R).   What two ways is this caused?

17. Ferris State University & Michigan Department of Career Development 17 Ground  What is the process of achieving earth neutral?

18. Ferris State University & Michigan Department of Career Development 18 Ground What is the symbol for ground? Where might it found?

19. Ferris State University & Michigan Department of Career Development 19 GFCI What prevents electrocution by detecting a ground fault and opening the circuit up?

20. Ferris State University & Michigan Department of Career Development 20 Overcurrent What is the extra amount of current that passes through a circuit and an protection device that usually opens the circuit called. What are these devices?

21. Ferris State University & Michigan Department of Career Development 21 Overcurrent Protection How does a fuse or breaker work? What are two examples of things that have fuses or breakers? A. B.

22. Ferris State University & Michigan Department of Career Development 22 Short Circuit What happens when there is a direct contact between “hot” and “neutral”?

23. Ferris State University & Michigan Department of Career Development 23 Static Electricity What is the buildup of the difference of potential between materials? Static electricity is ____ in voltage but ___ in amperage (in most cases).

24. Ferris State University & Michigan Department of Career Development 24 Extension Cords  In what situations does 1910.305(g)(1)(iii) not allow flexible cords to be used?

25. Ferris State University & Michigan Department of Career Development 25 Temporary wiring: What amount of time does 1910 305(a)(2) require that temporary wiring be used for?

26. Ferris State University & Michigan Department of Career Development 26 Grounded Equipment What are two guidelines to follow when plugging a piece of equipment in? A. B.