WorksheetsAg Mech I- Unit 4.07: Electrical Wiring
Total questions: 24
Worksheet time: 12mins
Which electrical devices receives only one plug?
15-amp 240-volt receptacles
duplex receptacles
power strip
three-outlet extension cord
Outdoor electrical wire used underground as feeder wire is classified as:
DC
SE or SEU
TW
UF
Indoor electrical wire used to provide service in areas with moisture or without moisture is classified as:
SE
TW
UF
USE
Jose is replacing aluminum wire with copper. What size copper wire does he need to carry the same electrical load?
one size larger than the aluminum
one size smaller than aluminum
the same size as the aluminum
two sizes larger than the aluminum
A Western Union splice is used:
in the western part of the United States
where four or more wires are joined
where strength is required in a splice
with wire nuts
Which material protects from electrical conduction?
copper
plastic
aluminum
iron
Touching electrical switches or receptacles with wet hands may cause electrical shock because
the hands are free of oil
the switches are clean
water conducts electricity
water is the universal solvent
NM cable is used:
in places where is has to be waterproof
inside buildings
outside buildings
outside and buried at least 18 inches deep
What type of electric cable has wires covered with paper and vinyl?
armored
conduit
ground-fault interrupter
nonmetallic sheathed
Which material will allow electrons to flow readily?
conductor
insulator
plastic
vinyl
The color of the hot electrical wire should be
black or red
green or white
orange or blue
yellow or brown
Aluminum wire
is a better conductor than copper wire
is heavier and more expensive than copper wire
requires one size larger than copper wire to carry the same amperage
requires one size smaller than copper wire to carry the same amperage
How many traveler wires should be used for two three-way switches?
none
two
three
four
What type of connector is turned onto wires to make a pigtail splice and to insulate the splice in one operation?
glued
soldered
solderless
welded
When using two three-way switches and one four-way switch, how many traveler wires should be used?
one
two
four
eight
Which wire size will carry the MOST amps?
8
10
12
14
If someone is undergoing electrical shock, it is dangerous to touch that person because both people will become:
disconnected form current
heroes
insulators
part of the circuit
A device that automatically trips and opens the circuit when too much current passes through it is a:
circuit breaker
circuit tester
single-pole swith
three-way switch
What material is a conductor of electricity?
copper
glass
insulation
plastic
Outdoor wire classified as UF is used to:
bury underground as feeder wire
provide mechanical protection where the wires enter and leave the ground
provide service inside buildings in areas with moisture
wire inside lights
A rat tail splice is used:
every two inches
every two feed
inside junction boxes
on rats
The electrical device that will receive two plugs is a:
240-volt receptacle
duplex receptacle
four-way switch
three-way switch
Outdoor wire classified as SE or SEU is used to:
bring electrical service into buildings
bury underground as feeder wire
provide mechanical protection where the wires enter and leaves the ground
provide service inside of buildings in areas with moisture
Toggle, mercury, silent, rocker arm, and push button are types of
single-pole switches
three-way switches
four-way switches
five-way switches
