Fire Alarm Systems I - Chapter 4 Quiz Review. Notification Appliances Questions and Answers 2024

Fire Alarm Systems I - Chapter 4 Quiz Review. Notification Appliances Questions and Answers 2024 What can using a notification appliance outdoors that is not rated for outdoor use cause? Ground faults. What requirements can mechanical covers or mechanical protection for notifications appliance cause? They may require derating of the appliance, reduced spacing, and could cause reduced effectiveness of the appliance. Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:05 / 0:15 Full screen Brainpower Read More Where can installation instructions for notification appliances be found? On the product cut sheet. Can a visual notification appliance that is only listed for wall mounting be used on a ceiling? No. What type of audible appliance is used on an emergency voice/alarm communications system? Speaker. What is an example of a textual audible device? Speaker Can audible and visual appliances be wired on the same circuit? Yes. Textual audible devices (speakers) must be on a separate circuit though as they require an amplifier to provide the signal. SPL (Sound Pressure Level) is measured in what scale? A-weighted scale. At what ambient SPL are visual notification appliances required? 105 dBa. The minimum required SPL for public mode signaling is the greater of ____ above the average ambient or five dB above the maximum SPL lasting a minute or more, using the A-weighted scale (dBA). 15 dBa. The minimum required SPL for private mode signaling is ____ above the average ambient or five dB above the maximum SPL lasting a minute or more, using the A-weighted scale (dBA). 10 dBa. What is the max height AFF and the minimum height from ceiling that wall mounted audible notification devices can be mounted? 90" AFF, 6" minimum from ceiling. What height must combination audible/visual notification appliance lens be mounted so the entire lens above the finished floor? 80-96". Do private mode signals need to be 15 dBA above the ambient sound pressure level of the area being served? No. 10 dBa. What SPL does sleeping room with an ambient SPL of 45 decibels A-weighted (dBA) have at the pillow? 75 dBa. Add 15 dBa to ambient SPL. If under 75 dBa, round the 75. What is a speaker tapped at its highest setting likely to suffer from? Distortion. What UL must visual notification appliances used for public mode signaling (hearing impaired) be listed to? UL 1638 What height AFF must the lenses of visual notification devices be mounted? 80-96". According to NFPA 72, a 20-foot × 20-foot room or area is best covered by a ____ visual notification appliance, centered on one wall. 15cd.