See also: NIOSH mining products
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| Type: | |
Invisible Ink Exercise |
| Audience: | |
Surface or underground metal/nonmetal miners |
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Length: | |
11 questions |
| Skills Reviewed: | |
Power requirements for a resistor, Selection of conductors and fuse disconnects, National Electrical Code, Solving electrical wiring problems |
You are a qualified electrician with 5 years of experience. Below freezing weather has been causing problems on the tipple. The tipple boss wants an electrical heater installed immediately. Your supervisor, the chief electrician, is too busy to help. He tells you to take care of it. The company electrical engineer is on vacation. You must determine the power and wiring requirements for the heater, and you must work within the National Electrical Code standards.
| Materials needed: | |
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Instructor Copy
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Problem Booklet
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1 for each trainee. May be downloaded separately or duplicated from the Instructor´s Copy. | |
Answer Sheet |
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1 for each group of 3 or 4 working the exercise. Purchased from MSHA (http://www.msha.gov/Education&Training.htm, MSHAdistributioncenter@dol.gov). You may also duplicate them locally if you or a local print shop have the ability to print invisible ink. | |
PENIB Developing Pens |
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1 for each answer sheet. Order from SICPA, Customer Service, 8000 Research Way, Springfield, VA 22153, Phone 1-888-SICPAUS or 1-888-742-7287, pen # "PENIB", a broad tipped developing pen. | |
Optional |
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Overhead projector and overheads of the Master Answer Sheet and Scoring Key found in the Instructor's Copy. | |
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