Electrical Safety Handbook

Question 1

According to the Electrical Safety Handbook, \_\_\_\_\_\_\_\_ is the difference in electrical potential between two points in a circuit. It is the force that causes the flow of electricity, and it is measured in volts. Can be compared to water pressure. 
A) Voltage
B) Current
C) Resistance
D) Grounding

Answer 1

A) Voltage

Question 2

According to the Electrical Safety Handbook, \_\_\_\_\_\_\_\_\_\_\_ is similar to the effect of friction on the flow of water inn a pipe. (Water flows more freely in a large pipe than a small one.) Different materials have different resistance to the flow of electricity. Very high resistance materials are called insulators, while the low resistance materials are called conductors. Resistance is measured in ohms.
A) Voltage
B) Current 
C) Resistance
D) Grounding

Answer 2

C) Resistance

Question 3

According to the Electrical Safety Handbook, \_\_\_\_\_\_\_\_ is a flow of electrical charge. It can be compared to the rate of flow of water in a pipe. Current is typically measures in amperes (or amps).
A) Voltage 
B) Current
C) Resistance
D) Grounding

Answer 3

B) Current

Question 4

According to the Electrical Safety Handbook, electrical hazards are created when electrical equipment or wires have become faulty. Which of the following examples are correct that can lead to electrical hazards?
A) Worn out or deteriorated
B) Improperly installed
C) Adverse weather/natural events exposure
D) All of the above

Answer 4

D) All of the above

Question 5

According to the Electrical Safety Handbook, because electricity takes all paths to ground, electrical systems use multiple safety systems to deal with system faults. Conductive \_\_\_\_\_ rods are one component used to ensure that any stray electricity is returned to earth.
A) Voltage
B) Potential
C) Insulating 
D) Grounding

Answer 5

D) Grounding

Question 6

According to the Electrical Safety Handbook, related electricity on the ground to a rippling water in a pool is attempting to explain the effect known as “ \_\_\_\_\_\_ gradient”. It is also referred to as “ground gradient”
A) Current
B) Voltage 
C) Potential
D) Resistance

Answer 6

C) Potential

Question 7

According to the Electrical Safety Handbook, the potential gradient, or voltage difference, creates two problems known as “ \_\_\_\_\_\_\_\_\_\_\_\_ potential” and “\_\_\_\_\_\_\_\_\_\_ potential”
A) Resistive & Touch 
B) Step & Touch
C) Step & Voltage
D) Fault & Touch

Answer 7

B) Step & Touch

Question 8

According to the Electrical Safety Handbook, the further apart that “X” and “Y” are, the greater the electrical contact hazard. This effect is referred to as “ potential”
A) Ground 
B) Step
C) Fault
D) Gradient

Answer 8

B) Step

Question 9

According to the Electrical Safety Handbook, in a manner similar to step potential, electricity would flow through your body if you were to pkace your hand on an energized source, while your feet were at some distance apart from the source. The electricity would flow through the hand, arm, chest, abdomen, leg and foot to the ground. The difference in voltage (potential difference) in this case is referred to as “ \_\_\_\_\_\_ potential”
A) Ground
B) Step
C) Fault 
D) Touch

Answer 9

D) Touch

Question 10

According to the Electrical Safety Handbook, a victim exposed to a large electric arc can be injured by the intense heat, molten metal splatter or by ultraviolet rays. The effect of electricity on the body and the severity of the shock depends on the:
A) Condition of the skin
B) Pressure of the body against the source
C) Moisture level of the surface of the skin
D) All of the above

Answer 10

D) All of the above

Question 11

According to the Electrical Safety Handbook, ladders and stretchers, due to their length, can present significant “\_\_\_\_\_\_\_\_\_\_\_and \_\_\_\_\_\_\_\_\_\_\_\_ potential” hazards and must be kept away from downed power lines
A) Step and ground 
B) Step and touch
C) Ground and touch
D) Fault and touch

Answer 11

B) Step and touch

Question 12

According to the Electrical Safety Handbook, which of the following would be considered areas that may contain open energized equipment:
A) Electrical Vaults
B) Substations
C) Generating Stations 
D) All of the above

Answer 12

D) All of the above

Question 13

According to the Electrical Safety Handbook, hich of the following is correct, a single wooden pole transmission line will range in voltage from:
A) 500,000 V
B) 230,000 V
C) 115,000 – 230,000 V 
D) 69,000 – 115,000 V

Answer 13

D) 69,000 – 115,000 V

Question 14

According to the Electrical Safety Handbook, an easy to remember rule for working around live high voltage transmission lines is to keep at least \_\_\_ metres (\_\_\_ft.) away.
A) 3 metres, 10 ft.
B) 5 metres, 16 ft. 
C) 6 metres, 20 ft.
D) 10 metres, 33 ft.

Answer 14

C) 6 metres, 20 ft.

Question 15

According to the Electrical Safety Handbook, bystanders should be back at least \_\_\_\_ metres (\_\_\_\_ ft.)
A) 3 metres (10 ft.)
B) 5 metres (16 ft.) 
C) 10 metres (33 ft.)
D) 15 metres (50 ft.)

Answer 15

C) 10 metres (33 ft.)

Question 16

According to the Electrical Safety Handbook, a fallen wire lies on top of, or under a vehicle with one or more people inside, the driver is unable to move the vehicle or the vehicle will not move, which of the following instructions is correct?
A) Instruct the driver to “Stay in the vehicle….” Until the electrical utility personnel arrive
B) Continually monitor the safe zone, secure the area and keep people away
C) A vehicle’s tires may smoke or explode from heating up, but do not advise leaving the vehicle except in the event of fire
D) All of the Above

Answer 16

D) All of the Above

Question 17

According to the Electrical Safety Handbook, victim(s) are unconscious and there are fallen wires under or on the vehicle or hanging very close to the vehicle, which of the following instructions is correct?
A) Determine and continually monitor the safe zone, secure the area and keep people away
B) Monitor closely for any change in the situation (fire starts etc.) Instruct any victim who might regain consciousness to “Stay in the vehicle…” until the power line is de-energized (made safe)
C) DO NOT take action which would endanger your own life or the lives of others
D) All of the Above

Answer 17

D) All of the Above

Question 18

According to the Electrical Safety Handbook, keep bystanders and non-emergency persons at least \_\_\_\_ metres (\_\_\_\_\_ ft.) from a vehicle tire pyrolysis incident.
A) 15 metres (50 ft.)
B) 50 metres (165 ft.) 
C) 100 metres (330 ft.)
D) 200 metres (660 ft.)

Answer 18

C) 100 metres (330 ft.)

Question 19

According to the Electrical Safety Handbook, what action for fighting a fire on power line equipment is incorrect:
A) Assess the situation from at least 10 metres (33 ft.) back. Attempt to determine the voltage involved. If you aren’t certain, assume the highest voltage
B) DO NOT apply a straight water stream directly on the fire. Electricity can travel through the stream and back to the nozzle
C) Use foam on live electrical equipment. Foam is not a good electrical conductor
D) Set the nozzle to produce fog (minimum 30 degree pattern) and ensure the designed pressure stays at or above 700 Kpa or 100 psi) at the nozzle

Answer 19

C) Use foam on live electrical equipment. Foam is not a good electrical conductor

Question 20

According to the Electrical Safety Handbook, which of the following is incorrect for responses involving trees or other objects in contact with a power line:
A) Assess the situation from the distances shown in the Ground Step Potential Hazard
B) Do not wait for the local electrical utility personnel to isolate and de-energize the power line
C) Determine what objects (tree, branch, ladder, pole etc.) are contacting, or are close to power lines
D) If Objects are in contact with power lines, determine the safe zone and secure the area

Answer 20

B) Do not wait for the local electrical utility personnel to isolate and de-energize the power line

Question 21

According to the Electrical Safety Handbook, a Padmount transformer or switching kiosk is damaged in a vehicle accident. Which of the following should you not do?
A) Assess the situation from at least 10 metres (33 ft.) back
B) Determine the safe zone, secure the area, inform other emergency responders and keep people away
C) Tell occupants of the vehicle to “Stay in the vehicle. We are contacting the electrical utility”
D) Walk normal, keep feet apart when approaching the vehicle

Answer 21

D) Walk normal, keep feet apart when approaching the vehicle

Question 22

According to the Electrical Safety Handbook, hazards in substation component buildings include all except:
A) Batteries containing sulphuric acid
B) Energized relays
C) Anhydrous Ammonia
D) Oil-filled transformers and circuit breakers

Answer 22

C) Anhydrous Ammonia

Question 23

According to the Electrical Safety Handbook, you have responded to a call with an injured person who has entered a substation. What action would you not do?
A) Calmly, tell the person to move to the fence if they are able
B) Cut the fence to gain patient access
C) Call the local electrical authority for assistance and follow their instructions including waiting for their arrival
D) When the electrical utility personnel arrive, initiate rescue under their direction

Answer 23

B) Cut the fence to gain patient access

Question 24

According to the Electrical Safety Handbook, you have responded to a fire in a substation or switchyard. Which of the following is incorrect?
A) Notify dispatch to call the electrical utility immediately, and inform other emergency responders of the identified dangers
B) Upon arrival, park vehicles and apparatus well away from the substation
C) Do not wait for electrical utility personnel to arrive. Enter the substation to extinguish the fire
D) Prepare equipment and protect exposures (surrounding property) applying water using fog spray (700 Kpa, [100 psi at the nozzle], 30 degree)

Answer 24

C) Do not wait for electrical utility personnel to arrive. Enter the substation to extinguish the fire

Question 25

``` According to the Electrical Safety Handbook, the minimum recommended distance for Fire Fighting inside Electrical Substations Switchyards is ____ m, ____ ft. A) 3 metres, 10 ft. B) 5 metres, 16 ft. C) 10 metres, 33 ft. D) 15 metres, 50 ft. ```

Answer 25

C) 10 metres, 33 ft.

Question 26

According to the Electrical Safety Handbook, you are responding to a fire at a substation or switchyard and you suspect PCBs in the fire, which of the following actions should you not do? A) Consult the Emergency Response Guidebook (ERG) B) Use dry chemical, CO2 or foam if possible C) Provide ‘stay-in-place’ direction for people located in path of the smoke plume D) Provide for liquid runoff containment

Answer 26

C) Provide ‘stay-in-place’ direction for people located in path of the smoke plume

Question 27

``` According to the Electrical Safety Handbook, when rescuers or fire fighters are working from an aerial device, it is essential to maintain the limits of approach of ____ metres, (___ ft.) from the power line A) 2 metres, 7 ft. B) 3 metres, 10 ft. C) 5 metres, 16 ft. D) 10 metres, 33 ft. ```

Answer 27

B) 3 metres, 10 ft.

Question 28

According to the Electrical Safety Handbook, which of the following is true about pulling the meter? A) It may violently arc or explode B) It does not guarantee that the power supply has been interrupted C) Power theft situations typically by-pass the meter D) All of the above

Answer 28

D) All of the above

Question 29

According to the Electrical Safety Handbook, which of the following Hazards in electrical vaults is in correct: A) Large volumes of thick toxic black smoke B) Fire C) No risk of Explosion D) Flying debris

Answer 29

C) No risk of Explosion

Question 30

According to the Electrical Safety Handbook, identifying Photovoltaic systems on the roof-tops of houses or commercial/industrial buildings could present a challenge to fire fighters as they may not be seen from street side and are usually difficult to see at night. Which of the following clues that may attract fire fighter’s attention are correct? A) Locating inverter boxes outside B) Additional meters C) Conduit installed on the exterior of the building D) All of the above

Answer 30

D) All of the above

Question 31

According to the Electrical Safety Handbook, which of the following electrical contact / shock hazards is not correct in illegal ‘Grow Ops’? A) Even if the meter was removed, the tapped connections are done on the utility feed which is live at all times until the utility company disconnects the feed from the street B) Equipment will be bonded or grounded properly, limiting short circuits and hazards C) Deliberately set booby traps of various types attached to doors, handles and windows D) Metals in close proximity becoming energized causing serious injury or electrocution

Answer 31

B) Equipment will be bonded or grounded properly, limiting short circuits and hazards

Question 32

According to the Electrical Safety Handbook, which of the following is not a fire hazard in illegal ‘Grow Ops’? A) High heat producing equipment placed on or near building combustibles B) Improper use of Lithium-ion batteries C) Overloaded circuits with inadequate or bypassed overload protection D) Use of undersized extension cords

Answer 32

B) Improper use of Lithium-ion batteries

Question 33

According to the Electrical Safety Handbook, which of the following is not an entanglement hazards in illegal ‘Grow Ops’? A) Use of undersized extension cords B) Improperly installed low-hanging flexible ducting C) Improperly strung unprotected wiring D) Batteries or capacitors randomly positioned and wired together

Answer 33

A) Use of undersized extension cords