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 waterpressure.

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 theflow of electricity. Very
high resistance materials are called insulators, while the low resistance materials arecalled 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 the process of mechanically connecting isolated wires and equipment to the earth, with sufficient capacity to carry any fault current and to ensure the wires and equipmentremain atthe same potential (same voltage) as the earth (ground).

A) Voltage
B) Current
C) Resistance
D) Grounding

Answer 3

D) Grounding

Question 4

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 4

B) Current

Question 5

According to the Electrical Safety Handbook, overloading of electrical conductors and motors accounts for the majority fires caused by ___________. There is a danger when the amount of electrical current exceeds the capacity conductors and
equipment are designed to carry.

A) Arcing
B) Overheating
C) Voltage
D) None of the above

Answer 5

B) Overheating

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 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 7

B) Step

Question 8

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 8

D) Touch

Question 9

According to the Electrical Safety Handbook, any victim of electrical shock should be assessed for the following effects of the body except for:

A) Contraction of chest muscles, causing breathing difficulty and
unconsciousness
B) Respiratory distress caused by temporary paralysis of the respiratory center
C) Permanent blindness from the sheer brilliance of the flash called “dazzle”
D) Burns to tissue at the entrance and exit points

Answer 9

C) Permanent blindness from the sheer brilliance of the flash called “dazzle”

Question 10

According to the Electrical Safety Handbook, portable Generators should be of the
________ _________ type.

A) Insulated neutral
B) Bonded negative
C) Bonded neutral
D) Bonded positive

Answer 10

C) Bonded neutral

Question 11

According to the Electrical Safety Handbook, mounted power inverters and generators must be to the vehicle frame and
all supply circuits from the generator must be protected by ground fault circuit interrupters (GFCI)

A) Bolted
B) Bonded
C) Epoxied
D) Fixed

Answer 11

B) Bonded

Question 12

According to the Electrical Safety Handbook, which of the following equipment may create an arcing situation where there is open energized equipment?

A) Stretchers
B) Oxygen/Trauma Bags
C) Portable radios
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, 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 17

C) 100 metres (330 ft.)

Question 18

According to the Electrical Safety Handbook, a standard precautionary approach to fighting wood pole fires includes the following except:

A) Use a straight stream at 550 kpa (80 psi) at the nozzle
B) Wear full turnout gear and SCBA
C) Position apparatus upwind and out of the line of fire of a vehicle’s tires
D) Evacuate people located in path of smoke plume and at safe distances from a ground gradient grid or tire explosion

Answer 18

A) Use a straight stream at 550 kpa (80 psi) at the nozzle

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, an underground live power line is damaged by digging machinery. Which of the following is incorrect?

A) Assess the situation from at least 10 metres (33 ft.) back
B) Determine the safe zone (15 metres, 49 ft.), secure the area, inform other emergency responders and keep people back
C) Call the electrical utility. Give the location and provide the number of the nearest transformer or switching kiosk. Numbers are stenciled on the unit usually in yellow lettering
D) Tell the operator of the machinery to “Stay in the machine. We are contacting the electrical utility”

Answer 20

B) Determine the safe zone (15 metres, 49 ft.), secure the area, inform other emergency responders and keep people back

Question 21

According to the Electrical Safety Handbook, _____ _____ are metal conduits that are used within substations to carry the electricity from transformers to other devices inside the substation.

A) Substation Conservators
B) Explosion Vents
C) Porcelain Bushings
D) Bus Bars

Answer 21

D) Bus Bars

Question 22

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 22

B) Cut the fence to gain patient access

Question 23

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 23

C) 10 metres, 33 ft.

Question 24

According to the Electrical Safety Handbook, the majority of fires in substations involve combustible insulating oil used in transformers, circuit breakers, and capacitors. This insulating oil has a minimum flash point of 145 C (293 F) and will generate temperatures in excess of ______°C, (_______°F)

A) 750°C, (1382°F)
B) 1000°C, (1850°F)
C) 1100°C, (2012°F)
D) 1250°C, (2282°F)

Answer 24

B) 1000°C, (1850°F)

Question 25

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 25

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

Question 26

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 26

B) 3 metres, 10 ft.

Question 27

According to the Electrical Safety Handbook, which of the following Hazards in electrical vaults is incorrect:

A) Large volumes of thick toxic black smoke
B) Fire
C) No risk of Explosion
D) Flying debris

Answer 27

C) No risk of Explosion

Question 28

According to the Electrical Safety Handbook, access for emergency responders can be difficult. Which of the following is correct, emergency responders should never attempt
to remove anyone from inside a vault unless:

A) They are certain that the power is off
B) The victim is not in contact with an electrical power source
C) None of the above
D) Both A & B are correct

Answer 28

D) Both A & B are correct

Question 29

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 29

B) Improper use of Lithium-ion batteries

Question 30

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 30

A) Use of undersized extension cords