NCCER ELECTRICAL LEVEL 1 - MODULE 1 OCCUPATIONAL OVERVIEW, ORIENTATION TO THE ELECTRICAL TRADE, CONSTRUCTION EDUCATION STANDARDS & SAFETY FOR ELECTRICIANS COMPLETE EXAM STUDY QUESTIONS WITH VERIFIED ANSWERS

NCCER ELECTRICAL LEVEL 1 - MODULE 1 OCCUPATIONAL OVERVIEW, ORIENTATION TO THE ELECTRICAL TRADE, CONSTRUCTION EDUCATION STANDARDS & SAFETY FOR ELECTRICIANS COMPLETE EXAM STUDY QUESTIONS WITH VERIFIED ANSWERS 1. What does NCCER stand for? - ANSWER National Center for Construction Education and Research 2. What is the focus of the NCCER Level 1 program? - ANSWER Electrical training 3. most common injury associated with electrical shock - ANSWER burns 4. 3 type of burns - ANSWER electrical. arc, and thermal contact 5. Electrical burn - ANSWER result of electric current flowing through the tissues or bones. Leads to internal burn 6. Arc burns - ANSWER Electrical arc fault. Caused by poor electrical contact or failed insulation 7. Thermal contact burn - ANSWER caused by contact with heated objects thrown during the blast associated with an electric arc 8. live-dead-live test - ANSWER always assume all circuits are energized until you have verifies that the circuit is de-energized 9. 3 basic causes of incidents - ANSWER -unsafe conditions -Unsafe equipment -unsafe acts 10. Hierarchy of risk controls - ANSWER Elimination, substitution, engineering controls, awareness, administrative controls, and PPE 11. Elimination - ANSWER most effective. Remove the Hazard. 12. Examples of Elimination - ANSWER -Using lockout/tagout procedures -off-shift maintenance to elimnate hazards 13. Substitution - ANSWER Replace the hazard 14. Substitution examples - ANSWER -reducing energy (120 v with 24v) -replace one large storage tank with several smaller cylinders -choose nontoxic coating over volatile coating -using robotic systems 15. Engineering controls - ANSWER isolate the hazard 16. Engineering control Examples - ANSWER barricades, safety nets, machine guards 17. Awareness - ANSWER warn workers of the hazard 18. Awareness examples - ANSWER -Hazard warning labels -Use of symbols to help workers with language barriers 19. Adminstrative controls - ANSWER change the way people work through policies 20. Administrative control examples - ANSWER procedures, work permits, worker rotation 21. PPE - ANSWER Employer provides appropriate protective equipment 22. What is the National Electrical Code (NEC)? - ANSWER Minimum safety standard for electrical installations that protects people and property. 23. Double insulated/ungrounded tools - ANSWER Electrical tools that are constructed so that the case is insulated from electrical energy. The case is made of a nonconductive material 24. Ground Fault Circuit Interrupter (GFCI) - ANSWER A protective device that functions to de-energize a circuit or portion thereof within an established period of time when a current to ground exceeds some predetermined value. This value is less than that required to operate the over current protective device of the supply circuit. 25. 4 most life threatening hazards on a construction site - ANSWER -Falls -Electric shock/arc burns -Being crushed by falling material -Being struck by flying or moving equipment 26. electrical current - ANSWER movement of electrons 27. example of conductors - ANSWER silver, copper, steel, aluminimum, human body 28. Effect of 5mA shock - ANSWER slight shock, involuntary movement 29. Effect of 6mA-30mA - ANSWER painful shock, loss of muscle control 30. Effect of 50mA- 150mA - ANSWER Extreme pain, respiratory arrest severe muscular contractions, death possible 31. Effect of 1,000 mA - 4,300mA - ANSWER VFIB, Nerve damage, typically results in death 32. main cause of electrical accidents - ANSWER contact with conductors 33. second cause of electrical accidents - ANSWER portable electrically operated hand tools- frame or case of tool is energized 34. most electrocution deaths occur with__ - ANSWER low voltages due to the frequency of contact