Deck 1: Residential Workplace Safety

Question 1

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

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

Answer 1

C

Question 2

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

Answer 2

True

Question 3

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

A) ampere
B) ohm
C) volt
D) watt

Answer 3

A

Question 4

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

Question 5

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 6

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

Question 7

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

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

Question 8

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

A) bare
B) black
C) green
D) white
E) A and C only

Question 9

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 10

One milliamp (mA) equals __________.

A) .1 ampere
B) .01 ampere
C) .001 ampere
D) .0001 ampere

Question 11

According to Ohm's law, __________.

A) Voltage = Current / Resistance
B) Current = Voltage / Resistance
C) Voltage = Resistance / Current
D) Resistance = Current x Voltage

Question 12

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

Question 13

Which of the following do NOT require GFCI protection?

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

Question 14

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

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

Question 15

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

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

Question 16

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 amps.

Question 17

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

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

Question 18

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

Question 19

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

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

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 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

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

A) 1,000
B) 10,000
C) 25,000
D) 35,000

Question 24

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

Question 25

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 26

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"
B) 18"
C) 24"
D) 36"

Question 27

__________________________________________ 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 28

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 29

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 30

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

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

Question 31

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

A) arc blast
B) arc-flash
C) electrical hazard
D) volt

Question 32

Changes to the National Electrical Code from the previous edition are indicated by grey highlighting or a __________ beside the table or figure in which the change has occurred.

A) asterisk
B) star
C) bullet
D) vertical solid line

Question 33

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 34

A(n) ____________ is defined as a device intended to provide protection from the effects of arc faults and to de-energize a circuit when an arc fault is detected.

A) arc-fault circuit-interrupter
B) ground-fault circuit-interrupter
C) circuit breaker
D) fuse

Question 35

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 36

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 37

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

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

Question 38

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 39

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

Question 40

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 41

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

Question 42

Explain the purpose of Safety Data Sheets.

Question 43

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 44

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

Question 45

When using a fire extinguisher, describe what each letter stands for in the acronym "PASS."

Question 46

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 47

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

Question 48

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.

Question 49

Explain the proper way to lift an object.