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Transformers ch3
Electrical Safety
| Question | Answer |
|---|---|
| 1. Explain what it means to be a qualified person | |
| 2. Fire extinguishers should be selected for the class of fire based on the combustible material. True/False | True |
| 3. A ___ is an explosion that occurs when the surrounding air becomes ionized and conductive. (arc blast, ground fault, main bonding jumper, voltage spike) | arc blast |
| 4. The National Electrical Code is a standard on practices for the installation of electrical products published by the National Fire Protection Association (NFPA) TRUE/FALSE | TRUE |
| 5. Grounding is the connection of all exposed current-carrying metal parts to the earth. True/False | False |
| 6.Any current over ___ is considered potentially dangerous (4mA,6mA, 8 mA, 10mA) | 8 mA |
| 7. List at least three reasons for which a grounding system is essential. | limits voltage to ground, stabilize voltage, common electrical reference |
| 8. List three ways to establish a good ground for an electrical distribution system | driven, electrode, metal underground water pipe, metal frame of building |
| 9. A ___ is a device that protects against electric shock by detecting an imbalance of current in the normal conductor pathways and opening the circuit. (equipment grounding conduct, ground fault circuit interrupt, grounded conduct, groundin electrode con | ground fault circuit interrupter |
| 10.The ___ is a US national organization that helps identify industrial and public needs for standards. | American National Standards Institute |
| 11. A __ signal word is a word used to indicate a potentially hazardous situation which, if not avoided, could result in death or serious injury (caution, danger, hazard, warning) | warning |
| 12. A __ signal word is a word used to indicate a potentially hazardous situation which, if not avoided, may result in minor or moderate injure(caution, danger, hazard, warning | caution |
| 13. A __ signal word is a word used to indicate an imminently hazardous situation which, if not avoided, results in death or serious injury(caution, danger, hazard, warning) | danger |
| 14. Leather protectors provide some insulation but should not be used alone. True/False | True |
| 15. A __ is a shock that results anytime a body becomes part of an electrical circuit(arc blast, arc flash, electrical shock, voltage spike) | electrical shock |
| 16. A ___is a connection at the service equipment that connects the equipment grounding conductor, the grounding electrode conductor, and the grounded conductor. | main bonding jumper |
| 17.A GFCI protects against ground faults and line-to-line contact hazards. True/False | True |
| 18. Rubber insulating gloves must be laboratory tested by an approved laboratory at least once per a year. True/False | False |
| 19. If rubber insulating gloves or leather protectors are found to be defective, they must be discarded and/or destroyed in the field. True/False | False: tagged as unsafe and returned to the supervisor |
| 20. __ is a floor covering that provides technicians protection from electrical shock when working on live electrical circuits. (floor shielding, plastic electrical insulation, rubber insulating matting, spray-coated flooring) | rubber insulating matting |
| 21. A __ is a short circuit through air ( arc blast, arc flash, voltage spike, voltage surge) | arc flash |
| 22. Ear protection devices are assigned a __ rating number based on the noise level reduced( decibel protection, noise reduction, sound reduction, volume protection) | noise reduction |
| 23.Define lockout and tagout. and explain the purpose of a lockout/tagout procedure | |
| 24. When is it appropriate to use a danger tag without a lock | when the lock won't fit on it |
| 25. __specifically addresses "electrical safety requirements for employee workplaces that are necessary for the safeguarding of employes in their pursuit of gainful employment" | NFPA 70E |
| 26. There are ___ classes of fires ( three, four, five, six) | five |
| 27.A ___ space is a space large enough and so configured hat an employee can physically enter and perform assigned work, but is not suitable for continuous employee occupancy. ( confined, dangerous, hazardous, restricted) | confined |
| 28. A __ label is a label that indicates areas or tasks that can pose a hazard to personnel and/or equipment (caution, hazard, safety, warning) | safety |
| 29. When lifting an object, bend forward at the waist and lift by using the back muscles. True/False | False |
| 30. What is a voltage surge? What is a transient voltage? | |
| 31. Workers such as industrial lectricians, technicians, engineers, and supervisors should be condidered qualified to closely approach overhead power lines. True/False | False |
| 32. The Occupational Safety and Health Admin is a federal agency that requires all employers to porvide a safe environment for their employees. True/False | True |
| 33. The NEC is updated every ___ years. ( two, three, four, five) | three |
| 34. The international Electrotechnical Comm is an independent organization that tests equipment and products to see if they onform to codes and standards. |
Created by:
JoshHampton