3.0—Home Security and Surveillance Systems
3.0—Home Security and Surveillance Systems
3.0—Home Security and Surveillance Systems
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158<br />
Chapter<br />
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3<br />
Question 10<br />
Which of the following is true regarding the use <strong>and</strong> installation of smoke detectors?<br />
(Select all that apply.)<br />
❑ A. For all new residential construction, battery-powered smoke detectors<br />
are acceptable for some locations.<br />
❑ B. For all new home construction, fire alarm sensors must be powered by<br />
the home AC power electrical wiring.<br />
❑ C. For homes built prior to 1979, battery-powered smoke alarms are permissible.<br />
❑ D. Smoke detectors must be installed near windows <strong>and</strong> doors to provide<br />
alerts for escape routes in case of fire.<br />
Answers B <strong>and</strong> C are correct. The NFPA rule 72 requires smoke detectors<br />
for new residential construction to be powered by AC wiring as the primary<br />
power source of power with battery power used only as a backup source in<br />
case of a power failure. Answer C is correct because battery-powered smoke<br />
detectors are permitted for homes built prior to 1979. Answer A is incorrect<br />
because the NFPA rules make no allowance for smoke detectors powered by<br />
batteries in specific locations in new residential construction. Answer D is<br />
incorrect because smoke detectors are designed to alert the residents of a<br />
potential fire condition. Smoke detectors are not designed to aid in locating<br />
an escape route from the home in case of fire.
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