2025 IRC EXAM PART 3 QUESTIONS
WITH CORRECT ANSWERS 2025
PhotoelectricGsmokeGalarmsGshallGnotGbeGinstalledGlessGthanG_____________GfeetGhorizontallyGfromGaGper
manentlyGinstalledGcookingGappliance.
IonizationGalarmGseparationGdistanceGisG__________Gfeet,GandGionizationGalarmsGwithGaGsilencingGbuttonGi
sG__________Gfeet.G-GCORRECTGANSWERG-6
20
10
SectionGR314.3.1GInstallationGnearGcookingGappliances,GItemG3.
SmokeGalarmsGshallGreceiveGtheirGprimaryGpowerGfromGtheGbuildingGwiringGwhereGsuchGwiringGisGservedGf
romGaGcommercialGsourceGand,GwhereGprimaryGpowerGisGinterrupted,GshallGreceiveGpowerGfromGaG______
_______G.G-GCORRECTGANSWERG-battery
SectionGR314.6GPowerGsource.
PhysicalGinterconnectionGofGsmokeGalarmsGshallGnotGbeGrequiredGwhereG_____________G_____________G
alarmsGareGinstalled.G-GCORRECTGANSWERG-listedGwireless
(allGalarmsGmustGsoundGuponGactivationGofGoneGalarm)
SectionGR314.4GInterconnection.
SmokeGalarmsGareGrequiredGinGeachG______________G____________.
SmokeGalarmsGareGrequiredGoutsideGeachGseparateG__________G__________.G
SmokeGalarmsGareGrequiredGonGeachGadditionalGstoryGofGtheGdwelling,GincludingG___________GandG_____
_____G___________GandGnotGincludingG_________G_________GandG___________G___________.G-
GCORRECTGANSWERG-sleepingGroom
sleepingGarea
basements,GhabitableGattics
crawlGspaces,GuninhabitableGatticsG
, R314.3GSmokeGAlarmsG-GLocation
CarbonGmonoxideGalarmsGshallGbeGinstalledGoutsideGofGeachGseparateG_____________G_____________Gin
GtheGimmediateGvicinityGofGtheG_____________G.G-GCORRECTGANSWERG-sleepingGarea
bedrooms
(COGalarmsGareGnotGrequiredGifGthereGareGnoGfuel-firedGappliancesGandGnoGattachedGgarage)
SectionGR315.3GLocation
WhenGaG_______-
_________G___________GisGlocatedGwithinGaGbedroomGorGitsGattachedGbathroom,GaGcarbonGmonoxideGal
armGshallGbeGinstalledGwithinGtheGbedroom.G-GCORRECTGANSWERG-fuel-burningGappliance
R315.3GCarbonGMonoxideGAlarmsG-GLocation
FoamGplasticGinsulationGinstalledGatG4GinchesGinGthicknessGorGlessGshallGhaveGaGflameGspreadGindexGofGnotG
moreGthanG_____________GandGaGsmoke-developedGindexGofGnotGmoreGthanG_____________G.G-
GCORRECTGANSWERG-75
450
SectionGR316.3.1GFoamGplasticGinsulationG4GinchesGthickGorGless.
FoamGplasticGshallGbeGseparatedGfromGtheGinteriorGofGaGbuildingGbyGanGapprovedG_____________G______
_______GofGnotGlessGthanG_____________G-inchGgypsumGwallboard.G-GCORRECTGANSWERG-
thermalGbarrierG
1/2
SectionGR316.4GThermalGbarrier.
AGthermalGbarrierGisGnotGrequiredGforGfoamGplasticGinsulationGinGanGatticGthatGisGenteredGonlyGforGpurpose
sGofG_____________GorG_____________G.G-GCORRECTGANSWERG-repairs
WITH CORRECT ANSWERS 2025
PhotoelectricGsmokeGalarmsGshallGnotGbeGinstalledGlessGthanG_____________GfeetGhorizontallyGfromGaGper
manentlyGinstalledGcookingGappliance.
IonizationGalarmGseparationGdistanceGisG__________Gfeet,GandGionizationGalarmsGwithGaGsilencingGbuttonGi
sG__________Gfeet.G-GCORRECTGANSWERG-6
20
10
SectionGR314.3.1GInstallationGnearGcookingGappliances,GItemG3.
SmokeGalarmsGshallGreceiveGtheirGprimaryGpowerGfromGtheGbuildingGwiringGwhereGsuchGwiringGisGservedGf
romGaGcommercialGsourceGand,GwhereGprimaryGpowerGisGinterrupted,GshallGreceiveGpowerGfromGaG______
_______G.G-GCORRECTGANSWERG-battery
SectionGR314.6GPowerGsource.
PhysicalGinterconnectionGofGsmokeGalarmsGshallGnotGbeGrequiredGwhereG_____________G_____________G
alarmsGareGinstalled.G-GCORRECTGANSWERG-listedGwireless
(allGalarmsGmustGsoundGuponGactivationGofGoneGalarm)
SectionGR314.4GInterconnection.
SmokeGalarmsGareGrequiredGinGeachG______________G____________.
SmokeGalarmsGareGrequiredGoutsideGeachGseparateG__________G__________.G
SmokeGalarmsGareGrequiredGonGeachGadditionalGstoryGofGtheGdwelling,GincludingG___________GandG_____
_____G___________GandGnotGincludingG_________G_________GandG___________G___________.G-
GCORRECTGANSWERG-sleepingGroom
sleepingGarea
basements,GhabitableGattics
crawlGspaces,GuninhabitableGatticsG
, R314.3GSmokeGAlarmsG-GLocation
CarbonGmonoxideGalarmsGshallGbeGinstalledGoutsideGofGeachGseparateG_____________G_____________Gin
GtheGimmediateGvicinityGofGtheG_____________G.G-GCORRECTGANSWERG-sleepingGarea
bedrooms
(COGalarmsGareGnotGrequiredGifGthereGareGnoGfuel-firedGappliancesGandGnoGattachedGgarage)
SectionGR315.3GLocation
WhenGaG_______-
_________G___________GisGlocatedGwithinGaGbedroomGorGitsGattachedGbathroom,GaGcarbonGmonoxideGal
armGshallGbeGinstalledGwithinGtheGbedroom.G-GCORRECTGANSWERG-fuel-burningGappliance
R315.3GCarbonGMonoxideGAlarmsG-GLocation
FoamGplasticGinsulationGinstalledGatG4GinchesGinGthicknessGorGlessGshallGhaveGaGflameGspreadGindexGofGnotG
moreGthanG_____________GandGaGsmoke-developedGindexGofGnotGmoreGthanG_____________G.G-
GCORRECTGANSWERG-75
450
SectionGR316.3.1GFoamGplasticGinsulationG4GinchesGthickGorGless.
FoamGplasticGshallGbeGseparatedGfromGtheGinteriorGofGaGbuildingGbyGanGapprovedG_____________G______
_______GofGnotGlessGthanG_____________G-inchGgypsumGwallboard.G-GCORRECTGANSWERG-
thermalGbarrierG
1/2
SectionGR316.4GThermalGbarrier.
AGthermalGbarrierGisGnotGrequiredGforGfoamGplasticGinsulationGinGanGatticGthatGisGenteredGonlyGforGpurpose
sGofG_____________GorG_____________G.G-GCORRECTGANSWERG-repairs