IAAI CFI STUDY QUESTIONS (2026)
WITH CORRECT ANSWERS GRADED
A+ FOR 2026-2027 ASSURED EXCEL!!
CombustibleNLiquidN-NNCORRECTNANSWERSANliquidNwithNaNflashNpointNABOVEN100F
12.5N-
NNCORRECTNANSWERSIfNtheNcurrentNflowingNoutNfromNanNelectricalNpanelNisN12.5Namps,NandNitNthe
nNflowsNthroughNanNelectricalNloadNofN1500Nwatts,NwhatNisNtheNamperageNofNtheNremainingNcurre
ntNflowNofNtheNreturnNcircuit?
1000N-NNCORRECTNANSWERSIfNaNhairNdryerNdrawsN8.3ampsN(inNaNhomeNwithN120-
voltNservice),NwhatNisNtheNwattage?
*PowerN(P)N=NcurrentN(I)NxNvoltageN(V)
WattsN=NampsNxNvolts
1987N-NNCORRECTNANSWERSTheNyearNofNtheNfirstNeditionNofNNFPAN1033
1.5NtimesN-
NNCORRECTNANSWERSTheNrecommendedNdistanceNforNsecuringNtheNperimeterNofNaNblastNscene
*ThatNis,NtheNdistanceNfromNtheNfurthestNdebris
1100°FN-
NNCORRECTNANSWERSWhatNtemperatureNinNtheNupperNgasNlayerNcausesNtheNonsetNofNFlashover?
,1960°FN-NNCORRECTNANSWERSTheNtemperatureNatNwhichNcopperNmelts
2NW/cm2N-
NNCORRECTNANSWERSTheNmeasurementNofNtheNradiantNheatNfluxN(fromNgasNlayerNtoNtheNfloor)Nth
atNindicatesNtheNonsetNofNflashover
240NvoltsN-
NNCORRECTNANSWERSTheNvoltageNbetweenNtheNtwoNhotNwiresNatNtheNserviceNentranceNcablesNinN
mostNsingle-familyNresidencesNinNtheNUnitedNStatesN(single-phaseNserviceNwithNthreeNwires)
3NyearsN-NNCORRECTNANSWERSTheNrevisionNcycleNforNNFPAN921N(timespan)
350°FN-NNCORRECTNANSWERSTheNflashNpointNofNpowerNsteeringNfluid
35-70Np.s.i.N-NNCORRECTNANSWERSInNhigh-pressureNfuel-
injectedNvehicles,NthisNisNtheNtypicalNrangeNofNpressureNthatNisNusedNtoNpumpNfuelNfromNaNfuelNtan
k
5NandN17N-
NNCORRECTNANSWERSTheNlowerNexplosiveNandNupperNexplosiveNlimitNofNnaturalNgasN(methane)?
680°FN-NNCORRECTNANSWERSTheNignitionNtemperatureNofNpowerNsteeringNfluid
FuelN-NNCORRECTNANSWERSAnyNsubstanceNthatNcanNundergoNcombustion
ActNorNOmissionN-
NNCORRECTNANSWERSTwoNfactorsNorNsituationsNleadingNtoNaNfireNthatNmayNshowNtheNnatureNofNth
eNincidentNresponsibility.
,AdditionalNInvestigativeNRecommendationsN-
NNCORRECTNANSWERSThisNconceptNshouldNnotNbeNincludedNinNaNsummaryNreportNofNfindings.
AdmiraltyNLawN-NNCORRECTNANSWERSANlawNthatNmayNgovernNtheNfireNinvestigationNofNaNboat
After-marketNEquipmentN-
NNCORRECTNANSWERSANtypeNofNdeviceNinNaNvehicle,NwhichNcanNcauseNanNelectricalNoverloadNtoNfac
toryNinstalledNwiring
AliveNandNBreathingN-
NNCORRECTNANSWERSEvidenceNofNsmokeNorNsootNinNtheNlungs,Nbronchi,NandNtracheaNisNoneNofNthe
NmostNsignificantNfactorsNinNconfirmingNthat,NatNtheNtimeNofNtheNfire,NtheNvictimNwasNWHAT?
AllNTeamNMembersN-
NNCORRECTNANSWERSThoseNwhoNhaveNtheNresponsibilityNforNmonitoringNsafetyNconditionsNatNtheN
fireNorNexplosionNscene
1220°FN-NNCORRECTNANSWERSTheNmeltingNtemperatureNofNaluminum
Aluminum-to-pavementNsparksN-
NNCORRECTNANSWERSWhichNoneNofNtheseNisNNOTNconsideredNaNcompetentNignitionNsource?N
Metal-to-metalNsparks,
Aluminum-to-pavementNsparks,
Metal-to-pavementNsparks,
MotorNbearingNsparks
HeatNReleaseNRateN-
NNCORRECTNANSWERSANmeaningfulNanalysisNofNaNfireNrequiresNanNunderstandingNofNtheNfireNgrowt
h,NtheNtotalNheatNreleased,NandNWHAT?
, Arc-faultNcircuitNinterrupterN-
NNCORRECTNANSWERSWhatNdoesNheNtermNAFCINstandNfor?NAnd,NtheN"A"NspecificallyNrepresentsNw
hat?
ASTMN-
NNCORRECTNANSWERSTheNorganizationNthatNdevelopsNstandardNmethodsNforNtestingNmaterials
Auto-ignitionN-
NNCORRECTNANSWERSInitiation NofNcombustionNbyNheatNbutNwithoutNaNsparkNorNflame
BackdraftN-
NNCORRECTNANSWERSANdeflagrationNresultingNfromNtheNsuddenNintroductionNofNairNintoNaNconfine
dNspaceNcontainingNoxygen-deficientNproductsNofNincompleteNcombustion
BackdraftN-
NNCORRECTNANSWERSAnNexplosionNcausedNbyNaNcombinationNofNcombustibleNmaterialsNheatedNto
NtheNignitionNpointNandNaNsuddenNintroductionNofNoxygenNtoNsupportNcombustion
BackfireNFlameNArrestorN-
NNCORRECTNANSWERSANboatNdeviceNthatNownersNfailNtoNkeepNclean,NwhichNisNaNfrequentNcauseNofN
engineNcompartmentNfiresNonNboats
BallastN-
NNCORRECTNANSWERSANdeviceNonNaNfluorescentNlightNfixtureNthatNtransformsNtheNvoltageNfromNno
rmalNhouseholdNvoltageNtoNaNhigherNvoltage
BatteryN-NNCORRECTNANSWERSTheNstarterNmotorNdrawsNitsNenergyNfromNthisNsource
BeyondNaNReasonableNDoubtN-NNCORRECTNANSWERSTheNburdenNofNproofNinNaNcriminalNtrial
WITH CORRECT ANSWERS GRADED
A+ FOR 2026-2027 ASSURED EXCEL!!
CombustibleNLiquidN-NNCORRECTNANSWERSANliquidNwithNaNflashNpointNABOVEN100F
12.5N-
NNCORRECTNANSWERSIfNtheNcurrentNflowingNoutNfromNanNelectricalNpanelNisN12.5Namps,NandNitNthe
nNflowsNthroughNanNelectricalNloadNofN1500Nwatts,NwhatNisNtheNamperageNofNtheNremainingNcurre
ntNflowNofNtheNreturnNcircuit?
1000N-NNCORRECTNANSWERSIfNaNhairNdryerNdrawsN8.3ampsN(inNaNhomeNwithN120-
voltNservice),NwhatNisNtheNwattage?
*PowerN(P)N=NcurrentN(I)NxNvoltageN(V)
WattsN=NampsNxNvolts
1987N-NNCORRECTNANSWERSTheNyearNofNtheNfirstNeditionNofNNFPAN1033
1.5NtimesN-
NNCORRECTNANSWERSTheNrecommendedNdistanceNforNsecuringNtheNperimeterNofNaNblastNscene
*ThatNis,NtheNdistanceNfromNtheNfurthestNdebris
1100°FN-
NNCORRECTNANSWERSWhatNtemperatureNinNtheNupperNgasNlayerNcausesNtheNonsetNofNFlashover?
,1960°FN-NNCORRECTNANSWERSTheNtemperatureNatNwhichNcopperNmelts
2NW/cm2N-
NNCORRECTNANSWERSTheNmeasurementNofNtheNradiantNheatNfluxN(fromNgasNlayerNtoNtheNfloor)Nth
atNindicatesNtheNonsetNofNflashover
240NvoltsN-
NNCORRECTNANSWERSTheNvoltageNbetweenNtheNtwoNhotNwiresNatNtheNserviceNentranceNcablesNinN
mostNsingle-familyNresidencesNinNtheNUnitedNStatesN(single-phaseNserviceNwithNthreeNwires)
3NyearsN-NNCORRECTNANSWERSTheNrevisionNcycleNforNNFPAN921N(timespan)
350°FN-NNCORRECTNANSWERSTheNflashNpointNofNpowerNsteeringNfluid
35-70Np.s.i.N-NNCORRECTNANSWERSInNhigh-pressureNfuel-
injectedNvehicles,NthisNisNtheNtypicalNrangeNofNpressureNthatNisNusedNtoNpumpNfuelNfromNaNfuelNtan
k
5NandN17N-
NNCORRECTNANSWERSTheNlowerNexplosiveNandNupperNexplosiveNlimitNofNnaturalNgasN(methane)?
680°FN-NNCORRECTNANSWERSTheNignitionNtemperatureNofNpowerNsteeringNfluid
FuelN-NNCORRECTNANSWERSAnyNsubstanceNthatNcanNundergoNcombustion
ActNorNOmissionN-
NNCORRECTNANSWERSTwoNfactorsNorNsituationsNleadingNtoNaNfireNthatNmayNshowNtheNnatureNofNth
eNincidentNresponsibility.
,AdditionalNInvestigativeNRecommendationsN-
NNCORRECTNANSWERSThisNconceptNshouldNnotNbeNincludedNinNaNsummaryNreportNofNfindings.
AdmiraltyNLawN-NNCORRECTNANSWERSANlawNthatNmayNgovernNtheNfireNinvestigationNofNaNboat
After-marketNEquipmentN-
NNCORRECTNANSWERSANtypeNofNdeviceNinNaNvehicle,NwhichNcanNcauseNanNelectricalNoverloadNtoNfac
toryNinstalledNwiring
AliveNandNBreathingN-
NNCORRECTNANSWERSEvidenceNofNsmokeNorNsootNinNtheNlungs,Nbronchi,NandNtracheaNisNoneNofNthe
NmostNsignificantNfactorsNinNconfirmingNthat,NatNtheNtimeNofNtheNfire,NtheNvictimNwasNWHAT?
AllNTeamNMembersN-
NNCORRECTNANSWERSThoseNwhoNhaveNtheNresponsibilityNforNmonitoringNsafetyNconditionsNatNtheN
fireNorNexplosionNscene
1220°FN-NNCORRECTNANSWERSTheNmeltingNtemperatureNofNaluminum
Aluminum-to-pavementNsparksN-
NNCORRECTNANSWERSWhichNoneNofNtheseNisNNOTNconsideredNaNcompetentNignitionNsource?N
Metal-to-metalNsparks,
Aluminum-to-pavementNsparks,
Metal-to-pavementNsparks,
MotorNbearingNsparks
HeatNReleaseNRateN-
NNCORRECTNANSWERSANmeaningfulNanalysisNofNaNfireNrequiresNanNunderstandingNofNtheNfireNgrowt
h,NtheNtotalNheatNreleased,NandNWHAT?
, Arc-faultNcircuitNinterrupterN-
NNCORRECTNANSWERSWhatNdoesNheNtermNAFCINstandNfor?NAnd,NtheN"A"NspecificallyNrepresentsNw
hat?
ASTMN-
NNCORRECTNANSWERSTheNorganizationNthatNdevelopsNstandardNmethodsNforNtestingNmaterials
Auto-ignitionN-
NNCORRECTNANSWERSInitiation NofNcombustionNbyNheatNbutNwithoutNaNsparkNorNflame
BackdraftN-
NNCORRECTNANSWERSANdeflagrationNresultingNfromNtheNsuddenNintroductionNofNairNintoNaNconfine
dNspaceNcontainingNoxygen-deficientNproductsNofNincompleteNcombustion
BackdraftN-
NNCORRECTNANSWERSAnNexplosionNcausedNbyNaNcombinationNofNcombustibleNmaterialsNheatedNto
NtheNignitionNpointNandNaNsuddenNintroductionNofNoxygenNtoNsupportNcombustion
BackfireNFlameNArrestorN-
NNCORRECTNANSWERSANboatNdeviceNthatNownersNfailNtoNkeepNclean,NwhichNisNaNfrequentNcauseNofN
engineNcompartmentNfiresNonNboats
BallastN-
NNCORRECTNANSWERSANdeviceNonNaNfluorescentNlightNfixtureNthatNtransformsNtheNvoltageNfromNno
rmalNhouseholdNvoltageNtoNaNhigherNvoltage
BatteryN-NNCORRECTNANSWERSTheNstarterNmotorNdrawsNitsNenergyNfromNthisNsource
BeyondNaNReasonableNDoubtN-NNCORRECTNANSWERSTheNburdenNofNproofNinNaNcriminalNtrial