Electrical Wiring Residential
18th Edition
ISBN: 9781285170954
Author: Ray C. Mullin, Phil Simmons
Publisher: Cengage Learning
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Textbook Question
Chapter 26, Problem 12R
An important but often overlooked requirement in the National Fire Alarm Code, NFPA 72 is that alarms must be replaced after being in service for (circle the correct answer)
- a. not more than 5 years.
- b. not more than 10 years.
- c. not more than 15 years.
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Is it required to use a PMMC instrument in an Instrument
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b. because the coils will not be present at all
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17. The filament of incandescent lamp is usually made of:
a. copper
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a. using thicker wire in the coil
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d. adding resistance in parallel
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a. supply with the highest voltage
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c. difference of the two supplies
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Chapter 26 Solutions
Electrical Wiring Residential
Ch. 26 - In your own words, explain the terms alarm and...Ch. 26 - The requirements for household fire alarm systems...Ch. 26 - Do heat alarms and carbon monoxide alarms take the...Ch. 26 - Name two basic ways that smoke alarms are powered.Ch. 26 - Name the two types of smoke alarms.Ch. 26 - List the absolute minimum level of smoke alarm...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Prob. 10R
Ch. 26 - Prob. 11RCh. 26 - An important but often overlooked requirement in...Ch. 26 - Carbon monoxide is ____________, and is...Ch. 26 - Circle the correct answer from the following...Ch. 26 - The wiring of more complex household fire alarm...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Fire alarm cable generally used in more complex...Ch. 26 - When installing a fire alarm system or a complete...Ch. 26 - Residential sprinkler fire protection systems are...
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