Deck 1: Residential Workplace Safety

Question 1

Worksite lock-out/tag-out procedures are established by __________.

A) the company you work for
B) UL
C) NFPA
D) OSHA

Answer 1

A

Question 2

A current of 0.12 ampere is enough to give an electrician a shock that is sufficient to cause his or her breathing to stop.

Answer 2

True

Question 3

The National Electrical Code gives minimum safety standards for electrical work and is not intended to be a "How-To" manual.

Answer 3

True

Question 4

Grounding and Bonding is covered in Article __________ of the National Electrical Code.

A) 210
B) 250
C) 110
D) 100

Question 5

The resistance of the human body remains the same, regardless of conditions.

Question 6

Many employers around the country require workers to have the OSHA 10 or OSHA 30 card before they are hired.

Question 7

The unit of measure for electrical current flow is the __________.

A) Ampere
B) Ohm
C) Volt
D) Watt

Question 8

According to Ohm's law, __________.

A) voltage = current/resistance
B) current = voltage/resistance
C) voltage = resistance/current
D) resistance = current * voltage

Question 9

If a 120-volt branch circuit is feeding a load that has 20 ohms of resistance, the amount of current flowing on the circuit will be 7 amperes.

Question 10

One milliampere (mA) equals __________.

A) 0.1 ampere
B) 0.01 ampere
C) 0.001 ampere
D) 0.0001 ampere

Question 11

Which of the following materials is not considered to be a conductor?

A) Aluminum
B) Copper
C) Glass
D) None of the above

Question 12

Fall protection must be used whenever workers are on a walking or work surface that is __________ ft.or higher and has unprotected sides.

A) 4
B) 6
C) 8
D) 10

Question 13

The National Electrical Code is published by the __________.

A) National Electrical Manufacturers Association
B) National Fire Protection Association
C) Occupational Safety and Health Administration
D) Underwriters Laboratories

Question 14

Which of the following do NOT require GFCI protection?

A) All 125V, 15A, and 20A bathroom receptacles
B) All 125V, 15A, and 20A outdoor receptacles
C) All 125V, 15A, and 20A receptacles that serve kitchen countertops
D) All 125V, 15A, and 20A receptacles in living rooms

Question 15

The force that causes electrons to move from atom to atom in a conductor is called __________.

A) amperage
B) ohms
C) voltage
D) watts

Question 16

The Code of Federal Regulations is published and administered by __________.

A) NFPA
B) OSHA
C) UL
D) None of the above

Question 17

The __________ wire of an electrical circuit is connected to the noncurrent-carrying metal parts of electrical equipment.

A) ungrounded
B) grounded
C) equipment grounding
D) energized

Question 18

Copper is not a conductor of electricity, because only materials that are magnetic can conduct electricity.

Question 19

Always wear the proper personal protective equipment and test the equipment for voltage before working on electrical equipment.

Question 20

Which of the following materials are considered to be insulators?

A) Plastic
B) Porcelain
C) Rubber
D) All of the above

Question 21

Scaffold planks must be secured and must extend over the end supports at least __________ inches, but not more than __________ inches.

A) 6, 24
B) 12, 24
C) 6, 18
D) 6, 12

Question 22

The amount of current that it takes to cause ventricular fibrillation is __________ milliamperes.

A) 5
B) 6-30
C) 50-150
D) 1000-4300

Question 23

A straight or extension ladder should extend at least __________ above the top support when placed against a structure that is not as tall as the ladder.

A) 12 inches
B) 18 inches
C) 24 inches
D) 36 inches

Question 24

Changes in sections to the 2017 National Electrical Code from the previous edition are indicated by __________ __________.

A) an asterisk
B) a star
C) a bullet
D) gray shading

Question 25

A dangerous condition associated with the possible release of energy caused by an electric arc is called a(n) __________.

A) arc blast
B) arc flash
C) electrical hazard
D) Volt

Question 26

When placing a straight or extension ladder against a wall, the bottom of the ladder should be placed approximately __________ of the vertical height from the wall.

A) 1/5
B) 1/4
C) 1/3
D) 1/2

Question 27

Fires that occur with flammable liquids, such as gasoline, oil, grease, paints, and thinners are Class __________ fires.

A) A
B) B
C) C
D) D

Question 28

The three components that must be present for a fire to start and sustain itself are ____________________, ____________________, and ____________________.

Question 29

The National Electrical Code is revised every __________ years to reflect the latest changes and trends in the electrical industry.

A) two
B) three
C) four
D) five

Question 30

When an electric current arcs through the air, the temperature can reach as high as _______ degrees Fahrenheit.

A) 1000
B) 10,000
C) 25,000
D) 35,000

Question 31

A two-pronged plug that distinguishes between the grounded conductor and the "hot" conductor by having a grounded conductor prong that is wider than the "hot" conductor prong is called a(n) ____________________ plug.

Question 32

The National Electrical Code chapter that covers Wiring Methods and Materials is __________.

A) Chapter 1
B) Chapter 2
C) Chapter 3
D) Chapter 5

Question 33

Dry chemical fire extinguishers can be used on Class __________ fires.

A) A
B) B
C) C
D) All of the above

Question 34

Fires that occur in or near electrical equipment such as motors, switchboards, and electrical wiring are classified as Class __________ fires.

A) A
B) B
C) C
D) D

Question 35

Which of the following items is considered to be personal protective equipment (PPE)?

A) Safety glasses
B) Hard hat
C) Work boots
D) All of the above

Question 36

__________________________________________ are designed to inform a worker of a material's physical properties, its effects on health, the proper type and style of protective equipment needed when using the material, and the proper first aid treatment to be given when exposed to the material.

Question 37

All employees who are exposed to hazardous conditions such as falling objects, electrical hazards, or burns are required to wear ___________________________________ on the job site.

Question 38

All electrical equipment and conductors are to be considered ____________________ until determined to be otherwise by testing methods.

Question 39

According to Ohm's law, a 120-volts branch circuit with a total circuit resistance of 15 ohms will have a current flow of ____________________ amperes.

Question 40

Which of the following types of fire extinguishers should be used on electrical fires?

A) Carbon dioxide
B) Pressurized water
C) Dry chemical
D) Either a or c

Question 41

When an arc occurs, explosive expansion causes molten metal to be thrown through the air and onto the skin or into the eyes of an electrical worker.The high pressure that results from a/an ____________________ can rupture eardrums and knock people off ladders and scaffolding.

Question 42

The type of PPE that an electrical worker needs to wear depends on the Hazard/Risk Category.If the Hazard/Risk Category is a 1, name at least four of the PPE you need to wear: ____________________, ____________________, ____________________, and ____________________.

Question 43

Explain the purpose of Safety Data Sheets.

Question 44

Explain why it is a good idea for an electrician to wear safety shoes with a nonconductive toe on the job site.

Question 45

Explain what the gray shading of certain parts of the NEC means.

Question 46

A mechanical device used to provide temporary access for people or equipment to locations above the ground where electrical work needs to be done is called a __________.It is sometimes referred to as a "cherry picker" or a "scissor lift."

Question 47

The purpose of ____________________ is to provide a practical safe working area for employees relative to the hazards arising from the use of electricity, and it addresses electrical safety concerns in all of the places that the National Electrical Code addresses safe installation practices, including residential construction.