1. Approximately how many fatal injuries occur in U.S. workplaces each year as a result of electrocution?

1. 200
2. 400
3. 800
4. 1,600

2. Approximately how many nonfatal injuries occur in U.S. workplaces each year as a result of electrical hazards?

1. 1,000
2. 2,000
3. 4,000
4. 8,000

3. Each day, approximately how many arc flash explosions occur in electrical equipment in U.S. plants?

1. Fewer than 5
2. 5 to 10
3. 10 to 20
4. More than 20

4. The temperature of radiant energy generated by arc flash can reach as high as:

1. 50% of the temperature of the sun’s surface
2. Equivalent to the temperature of the sun’s surface
3. Twice the temperature of the sun’s surface
4. Four times the temperature of the sun’s surface

5. An electric shock as low as _________ volts can be fatal if it passes through the heart:

1. 16
2. 52
3. 103
4. 149

6. Which of the following does NOT conduct electricity?

1. Concrete
2. Pure water
3. Copper
4. Zinc

ANSWERS

1. b
2. c
3. b (Based on statistics compiled by CapShell, Inc.)
4. d
5. a
6. b (Contrary to popular belief, pure water doesn’t conduct electricity. It’s the impurities in the water that do the conducting)

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