Electricity Inspection Section#3 The Distribution System Quiz#5

You should have finished Study Session 4 before starting this study session. This study session deals with switches and junction boxes, and touches on smoke detectors.

The estimated completion time is 30 minutes.

Objectives
At the end of this study session, you should be able to:

• Describe the function of switches and junction boxes and the common operating conditions.
• Describe the causes and implications of the conditions.
• Explain how to inspect these systems.

• Question 1

  Needs Grading

  	How would you identify an obsolete switch?
  	Selected Answer: Early switches have two round push buttons Correct Answer:   An obsolete switch is typically a round, push-button switch.

• Question 2

  Needs Grading

  	List 10 common problems found with switches.
  	Selected Answer: 1. Damaged 2. Loose 3. Overheating 4. Inoperative 5. Obsolete 6. Poor location near furnace 7. Poor location in bathroom 8. Faulty three-way or four-way switches 9. Dimmer switches without positive shut off 10. Garbage disposal problems Correct Answer: 1. Damaged 2. Loose 3. Overheating 4. Inoperative 5. Obsolete 6. Poor location near furnace 7. Poor location in bathroom 8. Faulty three-way or four-way switches. 9. Dimmer switches without positive shut-off 10. Poor switch location for garbage disposal

• Question 3

  Needs Grading

  	List 8 common junction box problems.
  	Selected Answer: 1. Damaged 2. Missing 3. Loose 4. Overheating 5. Not grounded 6. Cover loose or missing 7. Crowded 8. Concealed boxes Correct Answer:   1. Damaged 2. Missing 3. Loose 4. Overheating 5. Not grounded 6. Cover loose or missing 7. Crowded 8. Concealed boxes

• Question 4

  Needs Grading

  	Name two types of smoke detectors.
  	Selected Answer: ionization detectors photoelectric detectors Correct Answer:   Ionization and photoelectric

• Question 5

  Needs Grading

  	What connections do not need to be inside junction boxes?
  	Selected Answer: Knob-and-tube wiring Correct Answer:   Fluorescent light boxes and original knob-and-tube wiring connections.

• Question 6

  Needs Grading

  	What is a common problem with dimmer switches?
  	Selected Answer: You could adjust the light to so low that no one thinks it is on.  Correct Answer:   No positive shut-off.

• Question 7

  Needs Grading

  	What is a traveler in the context of a 3-way switch?
  	Selected Answer: Wires runs between the two three-way switches is usually called traveler.  Correct Answer:   The traveler is typically the three-conductor cable between the two switches.

• Question 8

  0 out of 0 points

  	All junction boxes should be concealed.
  	Selected Answer:  True Correct Answer:  False

• Question 9

  0 out of 0 points

  	Knob-and-tube wiring was installed without junction boxes commonly.
  	Selected Answer:  True Correct Answer:  True

• Question 10

  0 out of 0 points

  	One smoke detector is needed in each home, near the kitchen because that's where most house fires start.
  	Selected Answer:  False Correct Answer:  False

Electricity Inspection Section#3 The Distribution System Quiz#4

You should have finished Study Session 3 before starting this study session. This study session discusses lights and outlets in the distribution system of house wiring.

The estimated completion time is one and a half hours.

Objectives
At the end of this study session, you should be able to:

• Describe common problems at lights.
• Describe common problems at outlets.
• Explain causes and implications of these problems.
• Explain how to look for these problems.

• Question 1

  Needs Grading

  	Can an outlet be protected by a ground fault interrupter without it being apparent?
  	Selected Answer: No.  Correct Answer:   Yes, all outlets downstream of a GFI outlet will be protected.

• Question 2

  Needs Grading

  	Describe how you would test a GFI receptacle during an inspection.
  	Selected Answer: Use a GFI tester, press the test button Correct Answer:   Use a conventional circuit tester and operate the test button on the receptacle.

• Question 3

  Needs Grading

  	Discuss the problems commonly associated with pot lights.
  	Selected Answer: 1. Potlights in insulated ceilings has wrong type 2. Use of conventional bulbs Correct Answer:   1. Pot lights may be inappropriately installed in insulated ceilings. 2. Inappropriate bulbs may be used in the pot lights. The risk is overheating in either case.

• Question 4

  Needs Grading

  	Explain the problem with reversed polarity.
  	Selected Answer: For some cases, like lamps. If polarity is reversed, the light socket collar become hot and if touched, could result in electricity shock. In normal case, only the button at the bottom is hot.  Correct Answer:   The collar of a light fixture may be energized, increasing the risk of electrical shock when changing a light bulb.

• Question 5

  Needs Grading

  	How are lights tested?
  	Selected Answer: Simply use switch Correct Answer:   Lights are tested by turning them on and off by their switches.

• Question 6

  Needs Grading

  	List 12 common lighting problems found in houses.
  	Selected Answer: 1. Damaged or loose 2. Overheating 3. Inoperative 4. Obsolete 5. Not grounded 6. Missing 7. Poor stairway lighting 8. Conventional lights used in wet area 9. Improper potlight installations 10. Improper closet lighting 11. Heat lamps over doors 12. Isolating links needed on pull chains Correct Answer: 1. Damaged or loose 2. Overheating 3. Inoperative 4. Obsolete 5. Not grounded 6. Missing 7. Poor stairway lighting 8. Conventional lights used in wet areas 9. Improper pot light used in installations 10. Improper closet lighting 11. Heat lamps over doors 12. Isolating links needed on pull chains

• Question 7

  Needs Grading

  	List 19 common receptacle problems.
  	Selected Answer: 1. Damaged 2. Loose 3. Overheating 4. Ungrounded outlets 5. Open neutral or open hot connections 6. Reversed polarity outlets 7. Inoperative 8. Wrong type receptacle 9. No GFIs 10. Overheated neutral on split receptacles 11. Worn receptacles 12. Broken pin or blade in slots 13. Not enough receptacles 14. Outlets too close to bathtubs or showes 15. Too far from basins 16. Outlets above electric baseboard heaters 17. Outlets in floors or in counter tops 18. Outlets within eighteen inches of the garage floor 19. Dedicated circuits needed for exterior outlets Correct Answer: 1. Damaged 2. Loose 3. Overheating 4. Ungrounded outlets 5. Open neutral or open hot connections 6. Reversed polarity outlets 7. Inoperative 8. Wrong type receptacle 9. No GFIs 10. Overheated neutral on split receptacles 11. Worn receptacles 12. Broken pin or blade in slots 13. Not enough receptacles 14. Outlets too close to bathtubs or showers 15. Too far from basins 16. Outlets above electric baseboard heaters 17. Outlets in floors or counter tops 18. Outlets within 18 inches of the garage floor 19. Dedicated circuits needed for exterior outlets

• Question 8

  Needs Grading

  	Why should heat lamps not be located over doors?
  	Selected Answer: Towels thrown over the top of doors can be ignited by heat lamp Correct Answer:   The shock-prevention built into the appliance by the manufacturer will be compromised. For example, on a light fixture, a towel thrown over the door may be ignited by a heat lamp.

• Question 9

  0 out of 0 points

  	Outlets must not be within one foot of basins.
  	Selected Answer:  False Correct Answer:  False

• Question 10

  0 out of 0 points

  	Outlets should be as far away from bathtubs and showers as possible.
  	Selected Answer:  False Correct Answer:  True