EBK ELECTRICAL WIRING RESIDENTIAL
EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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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)

  1. a. not more than 5 years.
  2. b. not more than 10 years.
  3. c. not more than 15 years.
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