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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) - Correct Answer ✅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) - Correct Answer ✅the visible appliance What is the maximum number of 12 gauge THHN wires that can be installed in 1" EMT? (Nec Annex C tables) - Correct Answer ✅ 26 Two resistors are connected in parallel. R1 = 300 Ohms, R2 = 300 Ohms. What is their equivalent resistance? - Correct Answer ✅150 ohms
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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 = - Correct Answer ✅ 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) - Correct Answer ✅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' - Correct Answer ✅ 6 What color code requirement for a spot type heat detector rated at 200 ﾟ F - Correct Answer ✅White (NFPA 72, Table 17.6.2.1)
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If system impairment occurs, the owner must be notified ___ within ___ - Correct Answer ✅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 - Correct Answer ✅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. - Correct Answer ✅ 60 Conductors returning to the fire alarm control panel (FACP) from the last field device on the circuit might indicate a _____ circuit - Correct Answer ✅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. - Correct Answer ✅24 hrs & 15 mins The fire alarm system primary power branch circuit disconnecting means must be ___ in color. - Correct Answer ✅Red
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The secondary power supply for protected premises shall automatically provide power within ___ seconds when primary power fails. - Correct Answer ✅10 seconds Under which of the following conditions shall spot-type smoke detectors NOT be installed? - Correct Answer ✅When the temperature is over 100F Who is responsible for maintaining Personal Protective Equipment? - Correct Answer ✅YOU, the employee What does GFCI stand for? - Correct Answer ✅Ground Fault Circuit Interrupter A fixed-temperature, non-restorable spot type heat detector shall be tested ____ from initial installation. - Correct Answer ✅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. - Correct Answer ✅20F
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If the operation of a device, circuit, fire alarm control unit function, or specail hazard system interface is simulated during a test, what should then be done on the inspection record? - Correct Answer ✅It shall be noted on the test form that it was simulated Two resistor are connected in parallel. One resistor is 500 ohms and the other resistor is 500 ohms. What is their total resistance? - Correct Answer ✅250 ohms If a fire alarm system requires software, who should receive a copy of the software? - Correct Answer ✅The system owner Manual fire alarm boxes shall be ___ in color. - Correct Answer ✅red When a nonrestorable, fixed-temperature, line type heat detector is tested annually, the testing records shall be kept by __________ - Correct Answer ✅The system owner To test a water temperature switch, the switch shall be operated and receipt of signal shall be verified to indicate the decrease in water temperature to
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____ degrees farenheit and its restoration to above ____ F degrees. - Correct Answer ✅40 & 40 After a fire alarm system is installed, where should the record documentation be stored? - Correct Answer ✅In a document cabinet at the protected premises How should fixed-temperature, nonrestorable line type heat detectors be tested? - Correct Answer ✅Do NOT perform heat test. Test functionality, mechanically and electrically. Duct type smoke detectors shall be tested ____ - Correct Answer ✅Annually A heat detector with a listed spacing of 50'ft will be installed. What spacing shall be used for a 20'ft ceiling that is smooth and flat? - Correct Answer ✅32'ft - because detectors at or above 20'ft shall multiply the listed detector spacing by 0.64. i.e.(50x0.64=32)
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When heat detectors are installed on a peaked ceiling, a row of detectors shall be located within ____ of the peak of the ceiling. - Correct Answer ✅3'ft. What is the temperature classification of a heat detector that is red in color?
- Correct Answer ✅Extra high Monitoring for integrity shall not be required for central station circuits serving _____ within a central station. - Correct Answer ✅strobes/sirens Service personnel shall be qualified and _____ - Correct Answer ✅experienced A horn was installed to provide notification for a sleeping area. According to NFPA 72, what is the minimum sound level, in dB, allowed above average ambient sound level? - Correct Answer ✅15dB Strobe lights shall be visibly inspected by _______ - Correct Answer ✅confirming that the candela rating marking agrees with the approved drawings.
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A ceiling shall be treated as a smooth celing if the beams project no more than ____ below the ceiling - Correct Answer ✅4"inches FPLP type cables used for fire alarm systems are permitted to be substituted by _____ type cables. - Correct Answer ✅CMP PLFA conductors shall be solid or stranded ______. - Correct Answer ✅copper A ceiling mounted horn/strobe light was selected to be installed on a 40'ft high ceiling. Which mounting method best matches NFPA 72 requirements? - Correct Answer ✅Suspended horn/strobe light at or below 30'ft The maximum travel distance to the nearest manual fire alarm box shall not exceed ____, measured horizontally on the same floor. - Correct Answer ✅200'ft According to NFPA 72, what is the maximum allowable spacing for a spot- type heat detector that is listed for 50'ft spacing if it is to be installed on a
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Strobe lights are to be installed in a 25'ft wide hallway. According to NFPA 72, what are the requirements for spacing the strobe lights in the hallway? - Correct Answer ✅use the spacing requirements for rooms. Smoke detectors shall not be installed if ________. - Correct Answer ✅The temperature is above 100*F When connected to a supervising station, fire alarm systems installed on the protected premises employing automatic fire detectors or waterflow detection devices shall include a (an) _________. - Correct Answer ✅Manual fire alarm pull box Trouble signals and their restoration to normal shall be indicated within ______ at the fire alarm control panel for protected premises alarm systems.
- Correct Answer ✅200 seconds Which of the following is true about a DC circuit?
- Current only flows one way.
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-Voltage across each element in the circuit is equal. -The total current flow of the circuit is equal to the sum of the current flow through each element. -current flows in multiple directions - Correct Answer ✅current only flows in one direction A circuit contains three resistors in parallel. There values are R1=300, R2= and R3=300. What is the total resistance of the circuit? - Correct Answer ✅100 ohms Ohm's Law is? - Correct Answer ✅R= E/I or E = I x R or I = V/R. They're interchangeable Fire alarm cables were installed using RMC. What must be installed/provided when the conduit is terminated at boxes, fittings and or other enclosures? - Correct Answer ✅Bushings to protect the fire alarm cable/conductors regardless of the RMC trade size
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What is the value of a resistor with the following color bands: yellow, violet, red, gold? - Correct Answer ✅4,700 ohms What is the maximum number of 12 AWG THHN conductors that can be installed in 1" inch EMT? - Correct Answer ✅ 26 The secondary power supply for supervising station shall be capable of supporting operations for a minimum of? - Correct Answer ✅12 hours NFPLA circuit conductors shall be no smaller than? - Correct Answer ✅ 18 AWG A diode's function is? - Correct Answer ✅To only allow current to flow one way calculate the DC wire resistance of 500'ft of #18AWG coated, copper solid wire. - Correct Answer ✅4.04 ohms
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What is the maximum amount of #18 AWG copper conductors permitted in a 4-11/16 x 2-1/8 square metal box? NEC table 314.16(A) - Correct Answer ✅ 28 Which of the following fire alarm circuits does not include a redundant path? -Class A -Class B -Class X -None - Correct Answer ✅Class B Class X circuits using physical conductors shall be installed such that the outgoing and return conductors, exiting from and returning to the control unit, are ________. - Correct Answer ✅Routed separately
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Tests of all circuits extending from the central station shall be made at intervals of not more than ______. - Correct Answer ✅24 hours What is the color code for a spot-type heat detector that has a maximum temperature rating of 294 degrees Fahrenheit? - Correct Answer ✅Blue A 200 ohm resistor draws 2 amps of current when connected to a power source. What is the voltage applied to the resistor? - Correct Answer ✅ 400 volts How many #14 AWG conductors can be pulled through a 4 x 1-1/4" square box? - Correct Answer ✅ 9 Where a spot-type smoke detectors is installed during construction, it shall _______. - Correct Answer ✅not be operational, and protected from construction debris, dust, dirt and damage. What is the ohm value of a resistor with the following color band: Red, Green, Orange and no tolerance band. - Correct Answer ✅25,000 ohms
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Sampling system piping shall be conspicuously identified as "SMOKE DETECTOR SAMPLING TUBE - DO NOT DISTURB", at intervals on piping that provide visibility within the space, but not greater than _______. - Correct Answer ✅20'ft A 24VDC bell draws 0.8 amps of current and it is located 500'ft from the fire alarm control panel. According to the manufacturer, the bell will operate with no more than a 10% voltage drop. Assuming a temperature of 70F, what is the smallest sized, coated solid copper conductor that shall be used to provide power to the bell? -Find Chapter 9 table 8 in the NEC, plug ohm values into your equation E = IR and solve - Correct Answer ✅12 AWG According to NFPA 72, strobe lights shall not _______. - Correct Answer ✅Exceed 2 flashes per second (2Hz) The branch circuit supplying the fire alarm equipment shall _____. - Correct Answer ✅supply no other loads
