Nicet level 1 Study Guide Questions and complete solutions

When testing a water level supervisory switch serving a pressure tank a signal shall indicate if the water level _____________from the required level (NFPA 72, Table 14.4.3.2 17 (j) (4) - rises or falls over 3 inches If combination audible/visible appliances are installed the location of the installed appliance shall be determined by the requirements of _______. (Nfpa 72 18.4.8.1) - the visible appliance What is the maximum number of 12 gauge THHN wires that can be installed in 1" EMT? (Nec Annex C tables) - 26 Two resistors are connected in parallel. R1 = 300 Ohms, R2 = 300 Ohms. What is their equivalent resistance? - 150 ohms A Room is 200' long and 150' wide and the 8' high ceiling is smooth and flat. A spot type heat detector has been selected that is listed for a 50' maximum spacing between detectors. According to NFPA 72 how many detectors will be needed to protect this room? 200 / 50 x 150 / 50 = - 12 According to NFPA 72 the minimum number of restorable fixed temperature spot type heat detectors that must be tested during each annual test is? (NFPA 72 14.4.4.5.1) - Two detectors or more on each initiating device circuit According to NFPA 72 how many spot type heat detectors are required for a space that is 80' long and 55 floor wide with a smooth 10' ceiling? the detector is listed for a maximum space between detectors of 30' - 6 What color code requirement for a spot type heat detector rated at 200ﾟF - White (NFPA 72, Table 17.6.2.1) Unless otherwise recommended by the manufacturers published instructions single and multiple stations smoke alarms installed in one and 2 family dwellings shall be replaced every - 10 years from the day-of manufacture. (NFPA 72, 14.4.7.1) Fire alarm cables are permitted to be strapped to conduit to support the cable - False (NEC 760.143) Where non power limited wiring is installed exposed it must be mechanically protected within_____of the finished floor - 7' ft Fire-Warning equipment to be installed in residential occupancies shall produce the audible emergency evacuation signal described in - ANSI S3.41 According to NFPA 72, visible notification appliance for non-sleeping areas must be mounted between ___ and ___ inches above the finished floor - 80 & 96 If system impairment occurs, the owner must be notified ___ within ___ - in writing & within 24 hours A 20 X 20' ft room with a 20'ft high ceiling requires at a minimum a ___ ceiling mounted strobe - 30 candela According to NFPA 72, a 40 x 40'ft room or area with a 10'ft ceiling is best covered by a ___ cd visible notification appliance, centered on one wall. - 60 Conductors returning to the fire alarm control panel (FACP) from the last field device on the circuit might indicate a _____ circuit - Class A Secondary power supplies for an emergency voice/alarm communication fire alarm system shall be capable of operating for minimum of ___ of standby followed by ___ of alarm. - 24 hrs & 15 mins The fire alarm system primary power branch circuit disconnecting means must be ___ in color. - Red The secondary power supply for protected premises shall automatically provide power within ___ seconds when primary power fails. - 10 seconds Under which of the following conditions shall spot-type smoke detectors NOT be installed? - When the temperature is over 100*F Who is responsible for maintaining Personal Protective Equipment? - YOU, the employee What does GFCI stand for ? - Ground Fault Circuit Interrupter A fixed-temperature, non-restorable spot type heat detector shall be tested ____ from initial installation. - 15 years after Heat detectors should be selected to operate at least ___ degrees Farenheit above the maximum expected ambient temperature at the ceiling of the protected space. - 20*F