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EET1051 H-6 Switches (13 h)

Text Book: Articles 404, 406, 408, 410
House Wiring: Chapter 13, pages 347-373
True/False

Indicate whether the statement is true or false.
 

 1. 

There is no need to connect a white insulated grounded conductor to any single-pole, double-pole, three-way, or four-way switch in a residential switching circuit.
 

 2. 

If the circuit grounding conductor is connected to the green grounding terminal on the switch, there is no need to ground the metal device box in which the switch is installed.
 

 3. 

The white wire used in a switch loop wired with a two-wire cable like Type NM must be re-identified. This is normally done with black tape.
 

 4. 

When wiring a house using conduit, the NEC permits a white insulated conductor to be used as a 'hot' conductor in a switch loop as long as it is re-identified as such.
 

 5. 

Switch loops are not permitted in three-way switch circuits.
 

 6. 

When a white wire is used as a traveler conductor for three-way and four-way switching, it is required to be re-identified as an ungrounded conductor.
 

 7. 

Like a four-way switch, a double-pole switch has four terminal screws and the toggle has 'On' and 'Off' written on it.
 

 8. 

Like single-pole switches, dimmer switches always come from the factory with screw terminals.
 

 9. 

A double-pole switch can be used to control two 120-volt circuits.
 

 10. 

A permanent black marker can be used to re-identify a white insulated conductor as a 'hot' conductor in a cable.
 

 11. 

When re-identifying a white insulated conductor as a 'hot' ungrounded conductor, the identifying mark must completely encircle the conductor.
 

 12. 

Dimmer switches are available in single-pole, three-way, and four-way models.
 

 13. 

Switches installed in metal boxes are considered grounded as long as the metal strap of the switch is touching the metal box after installation.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 14. 

The National Electrical Code requires that all switching be done in the __________ circuit conductor.
a.
grounded
b.
grounding
c.
switch loop
d.
ungrounded
 

 15. 

The most common switch used in residential wiring is the __________ switch.
a.
double-pole switch
b.
combination switch
c.
three-way
d.
single-pole
 

 16. 

The black-colored common terminal on a three-way switch should always have a __________ insulated wire connected to it.
a.
white
b.
black
c.
red
d.
any colored insulated wire is permitted
 

 17. 

The brass-colored terminals on a three-way switch are called the __________ terminals.
a.
common
b.
traveler
c.
ungrounded
d.
grounded
 

 18. 

Four-way switches must be placed __________ in the circuit.
a.
before the three-way switches
b.
in line with the three-way switches
c.
after the three-way switches
d.
between the three-way switches
 

 19. 

To control a lighting outlet from four locations, a circuit requires __________.
a.
four single-pole switches
b.
a four-way switch
c.
two three-way switches and a four-way switch
d.
two three-way switches and two four-way switches
 

 20. 

Which of the following switches tend to generate the most heat?
a.
Double-pole switches
b.
Dimmer switches
c.
Three-way switches
d.
Four-way switches
 

 21. 

When wiring a house with a conduit wiring method, a __________ insulated wire cannot be used in a switch loop as a 'hot' conductor.
a.
red
b.
white(re-identified)
c.
blue
d.
black
 

 22. 

When installing a ceiling suspended paddle fan with a lighting kit and you want to have separate control of the fan and light, a __________ must be run from the switching location to the paddle fan location.
a.
two-wire cable
b.
three-wire cable
c.
four-wire cable
d.
five-wire cable
 

 23. 

A switch type that raises or lowers the lamp brightness of a lighting fixture is a __________ switch.
a.
two-way
b.
dimmer
c.
pilot light
d.
combination
 

 24. 

When wiring a house with a cable wiring method, a __________ insulated wire cannot be used in a switch loop switching arrangement.
a.
red
b.
white (re-identified)
c.
black
d.
all of the above can be used
 

 25. 

Three way switches are always installed in __________.
a.
pairs
b.
threes
c.
fours
d.
None of the above
 



 
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