2025 IRC EXAM PART 3 QUESTIONS WITH CORRECT ANSWERS 2025

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