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electrical safety part 1
Terms in this set (46)
Bob is asked to repair some overhead wiring, requiring the use a ladder. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. Does the fall qualify as an electrical accident?
a.Yes, because the electrical shock caused the fall.
b.Yes, because Bob was on the ladder to repair electrical wiring.
c.No, because the fall is what injured Bob, not the electrical shock.
d.No, because Bob was not electrocuted.
Potential electrical hazards include:
Potential hazards of electricity are preventable if you:
1. Are aware of the potential hazards
2. Follow safe work practices
3.Ignore the potential hazards
4.Understand how electricity works
Electricity must always travel in a(n) ________, ________ circuit. Select the correct answer and then click DONE.
Electricity becomes hazardous when it takes an unintended path to complete the ________. Select the correct answer and then click DONE.
Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. Select the correct answer and then click DONE.
The ________ keeps the electricity on its intended path through the conductor. Select the correct answer and then click DONE.
Electrical current travels through insulated ________. Select the correct answer and then click DONE.
Becoming part of the circuit exposes you to ________, the most dangerous electrical hazard. Select the correct answer and then click DONE.
b. Chemical burns
Dirk, a 28-year-old mechanic, is performing maintenance on a piece of equipment when he is shocked. The small electrical current enters his body through his left leg. The contact lasts for 5 seconds before someone is able to shut off the power. What factors determine the severity of Dirk's injuries?
1.Where the current passed through his body
2.The length of time Dirk's body was in contact with the electricity
3.The amount of the current
4.Dirk's physical condition
When an electric shock occurs, your muscles may:
Electrical shock may result in:
2.Loss of muscle control
3.Loss of eyesight
he most common shock-related injuries are:
a.related to muscle damage.
d. heart attacks.
The factors that determine the severity of an electrical injury include:
1.The humidity of the environment
2.The person's physical condition
3.The length of time the body is in contact with electricity
4.The amount of current
An electrical burn may affect:
The presence of ________ can turn you, your equipment, or insulators like wood into conductors. Select the correct answer and then click DONE.
Other electrical hazards in the workplace include:
: ________ or heavy perspiration can cause electricity to take an unintended path.
a. Gaseous matter
b. High humidity
Over half of all deaths caused by electricity result from contact with ________. Select the correct answer and then click DONE.
d. Power outlets
________ are anything that can transmit electrical current. Select the correct answer and then click DONE.
b. Deductive objects
c. Inductive objects
Select all answers that apply to the following statement and then click DONE. Effective means of controlling power line hazards include:
3. Wearing a baseball cap
Power lines may be located underground. Call ________ prior to digging to be connected with your local One Call Center to have all underground lines located by the utility company. Select the correct answer and then click on DONE.
You are working with a 10-foot section of a conductive pipe near power lines. What is the minimum clearance distance you must maintain from the power lines? Select the correct answer and then click DONE.
a. 5 feet
d. 20 feet
Best practices with power lines include:
1.Using a fiberglass ladder when the possibility exists for contact with electricity.
2.Using an aluminum ladder when the possibility exists for contact with electricity.
3.Maintaining a safe distance of at least 10 feet from all overhead power lines.
4. Using a dry wood ladder when the possibility exists for contact with electricity.
Additional minimum clearance distance is required for power lines carrying over ________. Select the correct answer and then click DONE.
In addition to contact with power lines, the top electrical hazards include:
1.Missing or broken path to ground.
2.Using extension cords or electrical tools properly.
3.ack of ground fault protection.
4. Equipment used in manner prescribed.
Ajay needs to use a dewatering pump to drain standing water on a construction site. Should Ajay use a GFCI?
1. Yes, because he will be using electricity near water.
2.Yes, because he is using a portable power tool.
3.No, because he will not be touching any grounded material when using the tool.
4.No, because he does not need to use an extension cord.
Latoya is using a mixing motor to mix pool chemicals in a plastic drum. The floor is covered in water and she is barefoot. As she is adding in the chemicals, her hand touches the motor and it becomes energized. What was Latoya's first mistake? Select the correct answer and then click DONE.
a.Standing in water
b.Not wearing insulating shoes or boots when she was handling electrical equipment
c.Touching the motor
d. Not checking to make sure that the motor was properly grounded
If the circuit does not turn off when testing the GFCI, the GFCI:
2.Is working properly
3.Needs to be reset
4.Must be replaced
Always use a GFCI:
1.When you are using electricity near water
2. If you are touching any grounded material while using a power tool
3.When you are using portable power tools
4.On equipment that must run unattended for long periods of time
Manufacturing equipment may be grounded using a wire connected to a rod driven into the earth. Before using the equipment, be sure that the ground wire:
1.Is firmly connected
2. Is not painted over
3. Is split
4. Is not broken
Question Text: Electrical tools should be grounded with a(n)________. Select the correct answer and then click DONE.
What is a GFCI? Select the correct answer and then click DONE.
a.A small current
b.A fast-acting switch monitoring current flow
c.A measurement of electricity
d.A power tool
A GFCI is designed to:
a.Shut off power within a fraction of a second
b.Shut off power within five minutes of the imbalance
c.Absorb any water around the area
d.Alert workers of any water in the area
GFCI is an acronym for:
a.Ground Fault Circuit Insulator
b.Ground Fault Critical Interrupter
c.Guaranteed Fault Circuit Interrupter
d.Ground Fault Circuit Interrupter
: Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground.
Carly needs to use an extension cord with her corded nail gun. She finds several available in the shop. How will she choose the correct cord? Select the correct answer and then click DONE.
a. Match the length from job to outlet.
b.Match the thickness of the extension cord to the thickness of the nail gun's power cord.
c. Match the color of the tool to the color of the extension cord.
d. Match the outlet prongs to the extension cord.
lex has set up a mobile engine testing station in the maintenance area. He plans to use it over a period of at least six months. Should he use an extension cord to power it? Select the correct answer and then click DONE.
a.Yes, as it is a mobile engine testing station.
b.Yes, as it would be too expensive to install more permanent wiring and receptacles.
c. No, because the electricity is needed on a long-term basis.
d. No, because an extension cord would not provide enough power.
Extension cords are used to:
a.Supply power for tools or equipment on a temporary or short-term basis.
b. Supply power for tools or equipment on a long-term basis.
c. Extend the reach of the power tool.
d.Add more outlets.
When selecting the right extension cord, a good rule of thumb is to match the thickness of the extension cord to the thickness of:
b.The tool's power cord.
d.The body of the power tool.
Extension cords may become a trip hazard when:
1. Used across walkways.
2.Placed along a wall.
3.Draped over equipment.
4.Running through doorways.
When inspecting extension cords, look for:
4.Damaged cover or insulation
When using electric-powered hand tools, do not overload:
When inspecting power tools, look for:
1.Damaged cover or insulation
4.Good condition of moveable parts
Items that could encourage overheating and cause tools to malfunction or start a fire include:
Use only approved and authorized power tools in areas where the following hazards may be present:
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