Safety

Question 1

Can a shock of 10000 V be as equally as deadly as a 120 V shock?

Answer 1

YES

Question 2

What should you do before working on electrical equipment if possible?

Answer 2

Turn the power off

Question 3

What is romex “processing?

Answer 3

Cutting new connections and re-strip insulation

Question 4

If victim is suffering from electrical shock, what should you do?

Answer 4

Isolate victim from power source. If possible, turn off the electricity

Question 5

What should you do if an accident occurs in the classroom?

Answer 5

Don’t panic - Help the situation -
Go to the office - Tell the teacher

Question 6

Why should you never plug in a lab without the instructors consent?

Answer 6

To prevent shock because the instructor checks your lab to make sure your connections are correct

Question 7

Electrical burns harm what part of the body?

Answer 7

Extensive internal damage

Question 8

When working on circuits out of arms length, should a ladder be used that is made of metal or wood?

Answer 8

Wood

Question 9

What do your muscles do when electric current is passing through them?

Answer 9

Contract

Question 10

The lower the number or “gauge” of a piece of Romex, the
__________________ the diameter.

Answer 10

Larger

Question 11

Name the 3 things a needle nose pliers can do to give you an advantage when working with wires.

Answer 11

“Fishing” wires
Cutting excess wires
Gives you leverage when your finger fails
Perfect for wrapping or hooking wires

Question 12

We always use a # _______ size gauge on our Romex strippers.

Answer 12

14

Question 13

What is the function of a 3-way switch?

Answer 13

Turns a fixture on in 2 different locations

Question 14

How many terminals does a 3-way switch have?

Answer 14

4

Question 15

What is the function of a single pole switch?

Answer 15

Turns a fixture on in one location

Question 16

How many terminals does a single pole switch have?

Answer 16

3

Question 17

A power plug has 3 terminals. What are they?

Answer 17

black(hot)
white (neutral)
Ground

Question 18

The black wire is also known as the ____________ wire.

Answer 18

hot

Question 19

The white wire is also known as the _________________ wire.

Answer 19

neutral

Question 20

Where should you NOT store fixtures?

Answer 20

In your toolbox

Question 21

What should you do if your scrap Romex is too long for the job?

Answer 21

leave it so it can be “processed” for other labs.

Question 22

Where can you find how much Romex you need for a lab?

Answer 22

Under the Tools section of your lab or the teacher will tell you.

Question 23

If two switches are needed, how will they appear on the lab drawing and
procedure sections?

Answer 23

As a rectangle in the lab drawing

Question 24

What is the purpose of Instructor Sign Off #1?

Answer 24

To check your connections

Question 25

What is the purpose of Instructor Sign Off #2?

Answer 25

Make sure switches are secure and to test the circuit

Question 26

What could happen with too much conductor exposed?

Answer 26

short circuit

Question 27

How much sheathing should be removed from Romex?

Answer 27

Slice 3 ½” to 4” of sheathing off of the Romex

Question 28

How much insulation should be removed from the conductors?

Answer 28

Remove 5/8” to ¾” of insulation

Question 29

Where does ALL Romex go when cleaning up or breaking down a lab?

Answer 29

In the green bucket

Question 30

Draw a picture of the right way to attach a conductor to a terminal.

Question 31

Why don’t you twist the two conductors together before attaching a wire nut?

Answer 31

Because it will loosen up and fall out

Question 32

How many wires does a RED wire nut hold together?

Answer 32

3-4

Question 33

How many wires does a YELLOW wire nut hold together?

Answer 33

2

Question 34

What are the 3 reasons you should use the appropriate color pigtail for the job?

Answer 34

So you or the teacher don't get confused when making the circuit

Question 35

What two materials of are conductors made of?

Answer 35

Aluminum and copper

Question 36

The larger the number of a conductor, the smaller the…..

Answer 36

diameter

Question 37

What is the minimum gauge of conductors?

Answer 37

1 AWG

Question 38

What is the maximum gauge of conductors?

Answer 38

18 AWG

Question 39

What does 14/2 stands for?

Answer 39

14 gauge with 2 conductors and 1 ground

Question 40

What does 14/3 stands for?

Answer 40

14 gauge with 3 conductors and 1 ground

Question 41

What is an advantage of copper wire?

Answer 41

Strong and resists oxidation

Question 42

What is the main disadvantage of aluminum wire?

Answer 42

subject to problems as a result of oxidation and expansion

Question 43

What is the definition of insulation?

Answer 43

a non-conductive covering

Question 44

The size of a conductor depends on what factors?

Answer 44

1. The amount of electricity that must be conducted. 2. The length of the conductor. 3. The type of environment in which the conductor will be used.

Question 45

What color wires are found in 14/2?

Answer 45

Black, White and copper

Question 46

What color wires are found in 14/3?

Answer 46

Black, white, red and copper

Question 47

What are the three shapes of boxes that we use in our class?

Answer 47

Square Octogonal Rectangular

Question 48

What is the purpose of electrical boxes?

Answer 48

Protect people from electrical shock Keep exposed conductors away from combustible building material

Question 49

What are the two things electrical boxes must be able to do?

Answer 49

Be strong enough to withstand the stresses put on them during installation Resist bending or twisting while holding fixtures or devices.

Question 50

Name two of the three characteristics of “handy boxes” we use in our class.

Answer 50

Used for surface mounting Seamless Have rounded edges to prevent injury

Question 51

What is the definition of an electrical “knockout”?

Answer 51

A weakened area on the box that is designed to be easily removed so wires can be brought into the box.

Question 52

What is the definition of “ganging boxes”?

Answer 52

Method of joining small boxes to create one large box that can accommodate multiple devices.

Question 53

What do box extensions do?

Answer 53

Provide additional volume when a box is too crowded with wires Bring a box flush to the wall or ceiling surface when the box has been mounted too deep.

Question 54

What does a ground clip do?

Answer 54

A ground clip is a device that is hooked over the edge of the box and hold a wire in tight electrical contact with the box.