Final Test Arc Flashes

Final Test Arc Flashes

Thank you for completing the Arc Flashes course. You must pass the final exam with a 80 or above in order to receive certification.

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Question 1 of 10

1. Question
______% of electrical injuries and fatalities among “qualified workers” are caused by arc flash (Bureau
of Labor Statistics).
- 25%
- 50%
- 80%
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Question 2 of 10

2. Question
Activities with high potential for exposure to arc flash include:
- Troubleshooting live circuits
- Opening or closing circuits
- Grounding circuits
- All of the above
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Question 3 of 10

3. Question
Potential arc flash causes may include:
- Uninsulated tool contact with a live conductor
- Loose wire connections
- Accidental contact with live conductors
- All of the above
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Question 4 of 10

4. Question
Temperatures associated with an arc flash can be up to 35,000 Fahrenheit.
- True
- False
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Question 5 of 10

5. Question
When working around exposed live conductors insulated tools must be used.
- True
- False
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Question 6 of 10

6. Question
An arc blast may produce molten shrapnel, sound waves, and damaging pressure waves.
- True
- False
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Question 7 of 10

7. Question
NFPA 70E uses two hazard categories based on the incident energy of a circuit.
- True
- False
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Question 8 of 10

8. Question
According to NFPA 70E, the flash protection boundary is the approach distance from an
exposed live part where a person could receive at least a second degree burn should if within the
boundary when an arc flash occurs.
- True
- False
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Question 9 of 10

9. Question
Phenomenon where a flashover of electric current leaves its intended path and travels through the air from can be caused from:
- Dust
- Dropping tools
- Accidental touching
- Condensation
- All of the above
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Question 10 of 10

10. Question
Three factors determine severity of arc flash injury
- Proximity of the worker to the hazard
- Temperature
- Time for circuit to break
- Amount of light produced
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