Electrical Safety Quiz On Construction Projects

1. The severity of a shock depends on what?

The path of the current through your body

The amount of current (amps)

The duration of the shock

All of the above

The severity of a shock depends on all of the factors mentioned: the path of the current through your body, the amount of current (amps), and the duration of the shock. The path of the current determines which organs and tissues are affected, while the amount of current determines the potential damage to those organs and tissues. Additionally, the duration of the shock plays a role in the extent of injury, as a longer exposure to the current can cause more harm. Therefore, all of these factors contribute to the severity of a shock.

Explanation

The severity of a shock depends on all of the factors mentioned: the path of the current through your body, the amount of current (amps), and the duration of the shock. The path of the current determines which organs and tissues are affected, while the amount of current determines the potential damage to those organs and tissues. Additionally, the duration of the shock plays a role in the extent of injury, as a longer exposure to the current can cause more harm. Therefore, all of these factors contribute to the severity of a shock.

2. 18 gauge wire is larger than 12 gauge wire?

True

False

The gauge of a wire refers to its thickness. In the case of wire gauges, a higher number indicates a smaller wire size. Therefore, 18 gauge wire is actually smaller in diameter than 12 gauge wire. So, the statement that 18 gauge wire is larger than 12 gauge wire is false.

Explanation

The gauge of a wire refers to its thickness. In the case of wire gauges, a higher number indicates a smaller wire size. Therefore, 18 gauge wire is actually smaller in diameter than 12 gauge wire. So, the statement that 18 gauge wire is larger than 12 gauge wire is false.

3. An extension cord with a small cut in the outer insulation is okay to use because the internal insulation is not damaged.

True

False

A small cut in the outer insulation of an extension cord can expose the internal wires to potential hazards. Even if the internal insulation is intact, the exposed wires can pose a risk of electrical shock or fire. Therefore, it is not safe to use an extension cord with any kind of damage to its outer insulation.

Explanation

A small cut in the outer insulation of an extension cord can expose the internal wires to potential hazards. Even if the internal insulation is intact, the exposed wires can pose a risk of electrical shock or fire. Therefore, it is not safe to use an extension cord with any kind of damage to its outer insulation.

4. What is the only type of cord we can use that is not 3 wire?

The one that is made out of bailing wire and duct tape.

Double insulated

The one that we made from Christmas lights

S type 18 gauge

Double insulated cords are the only type of cords that can be used that are not 3 wire. Double insulation refers to the presence of an extra layer of insulation around the conductive wires, providing an additional level of protection against electrical shocks. This type of cord is commonly used in appliances and tools where there is a higher risk of electrical exposure. The bailing wire and duct tape cord and the one made from Christmas lights are not suitable for electrical use due to safety concerns. S type 18 gauge cord is not mentioned in the question and therefore cannot be considered as the correct answer.

Explanation

Double insulated cords are the only type of cords that can be used that are not 3 wire. Double insulation refers to the presence of an extra layer of insulation around the conductive wires, providing an additional level of protection against electrical shocks. This type of cord is commonly used in appliances and tools where there is a higher risk of electrical exposure. The bailing wire and duct tape cord and the one made from Christmas lights are not suitable for electrical use due to safety concerns. S type 18 gauge cord is not mentioned in the question and therefore cannot be considered as the correct answer.

5. Most of our heavy equipment is not insulated which means what?

Damage to the equipment could be catastrophic

The ground beneath the equipment may be energized

You should stay in the equipment if you contact overhead power lines

The only time you should exit the equipment before the line is de-energized is if the equipment catches fire

All of the above

Most of our heavy equipment is not insulated, which means that there is a risk of damage to the equipment, the ground beneath the equipment may be energized, and if you come into contact with overhead power lines, it is safer to stay in the equipment. The only exception to staying in the equipment is if it catches fire, in which case you should exit before the line is de-energized. Therefore, all of the given statements are correct.

Explanation

Most of our heavy equipment is not insulated, which means that there is a risk of damage to the equipment, the ground beneath the equipment may be energized, and if you come into contact with overhead power lines, it is safer to stay in the equipment. The only exception to staying in the equipment is if it catches fire, in which case you should exit before the line is de-energized. Therefore, all of the given statements are correct.

6. Twist lock style cord heads should be used on our projects.

True

False

Twist lock style cord heads should be used on our projects because they provide a secure and reliable connection between the cord and the equipment. This type of cord head has a locking mechanism that prevents accidental disconnection, ensuring safety during operation. Additionally, twist lock cord heads are designed to withstand heavy-duty usage and can handle high electrical currents without overheating. Therefore, using twist lock style cord heads is recommended to ensure a safe and efficient electrical connection in our projects.

Explanation

Twist lock style cord heads should be used on our projects because they provide a secure and reliable connection between the cord and the equipment. This type of cord head has a locking mechanism that prevents accidental disconnection, ensuring safety during operation. Additionally, twist lock cord heads are designed to withstand heavy-duty usage and can handle high electrical currents without overheating. Therefore, using twist lock style cord heads is recommended to ensure a safe and efficient electrical connection in our projects.

7. What must be covered in an assured grounding program?

All cords not protected by a GFCI

Only equipment that could shock you

Underground cords and wires

Cords that run through high traffic areas

In an assured grounding program, all cords that are not protected by a GFCI (Ground Fault Circuit Interrupter) must be covered. This is because GFCIs are designed to protect against electric shocks by quickly shutting off power when a ground fault is detected. Therefore, any cords that do not have this protection should be covered to ensure the safety of individuals using the equipment.

Explanation

In an assured grounding program, all cords that are not protected by a GFCI (Ground Fault Circuit Interrupter) must be covered. This is because GFCIs are designed to protect against electric shocks by quickly shutting off power when a ground fault is detected. Therefore, any cords that do not have this protection should be covered to ensure the safety of individuals using the equipment.

8. When should documented testing take place for a GFCI?

Daily

Monthly

Quarterly

When something breaks

Documented testing for a GFCI should take place monthly. This is because GFCIs (Ground Fault Circuit Interrupters) are electrical safety devices that are designed to protect against electrical shock hazards. Regular testing is necessary to ensure that the GFCI is functioning properly and providing the necessary protection. Monthly testing allows for early detection of any malfunctions or issues with the GFCI, allowing for prompt repairs or replacements to be made. This helps to maintain a safe electrical environment and prevent potential accidents or injuries.

Explanation

Documented testing for a GFCI should take place monthly. This is because GFCIs (Ground Fault Circuit Interrupters) are electrical safety devices that are designed to protect against electrical shock hazards. Regular testing is necessary to ensure that the GFCI is functioning properly and providing the necessary protection. Monthly testing allows for early detection of any malfunctions or issues with the GFCI, allowing for prompt repairs or replacements to be made. This helps to maintain a safe electrical environment and prevent potential accidents or injuries.

9. GFCI's measure a difference or leakage in current. The GFCI will open the circuit thus stopping the current flow when it detects a leakage of more than ___ mA?

GFCI's, or Ground Fault Circuit Interrupters, are electrical safety devices that monitor the flow of current in a circuit. They are designed to detect any difference or leakage in the current, which could indicate a potential ground fault or electrical shock hazard. When a GFCI detects a leakage of more than 5 mA (milliamperes), it will open the circuit and stop the current flow, preventing any potential harm or damage.

Explanation

GFCI's, or Ground Fault Circuit Interrupters, are electrical safety devices that monitor the flow of current in a circuit. They are designed to detect any difference or leakage in the current, which could indicate a potential ground fault or electrical shock hazard. When a GFCI detects a leakage of more than 5 mA (milliamperes), it will open the circuit and stop the current flow, preventing any potential harm or damage.

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10. Why is it important to have a grounding conductor on all electrical cords?

Helps protect the person using the cord from electrical shock

Helps route current through the supplied ground instead of the person

It looks way cooler than the two wire type

Current will always take the path to ground with the least resistance

It is a good way to protect our employees

Having a grounding conductor on all electrical cords is important because it helps protect the person using the cord from electrical shock. It also helps route current through the supplied ground instead of the person, ensuring their safety. Additionally, current will always take the path to ground with the least resistance, so having a grounding conductor provides a safe and reliable path for the current. Lastly, having a grounding conductor is a good way to protect employees and prevent accidents or injuries caused by electrical shocks.

Explanation

Having a grounding conductor on all electrical cords is important because it helps protect the person using the cord from electrical shock. It also helps route current through the supplied ground instead of the person, ensuring their safety. Additionally, current will always take the path to ground with the least resistance, so having a grounding conductor provides a safe and reliable path for the current. Lastly, having a grounding conductor is a good way to protect employees and prevent accidents or injuries caused by electrical shocks.

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