Thaum ua qhov kev sim fuse-fuse rau T2.5A fuse, nws yog ib qho tseem ceeb kom nco ntsoov tias fuse melting tam sim no feem ntau siab dua 2.5A. Tsis tas li ntawd, qhov loj dua tam sim no ntws los ntawm lub fuse, nws yuav yaj sai dua. Raws li fuses tsis tsim hluav taws xob, lub zog hluav taws xob yuav tsum tau muab hluav taws xob rau lub fuse thaum lub sijhawm kuaj. Txawm li cas los xij, cov kws tshaj lij uas tsis paub txog cov yam ntxwv ntawm cov khoom siv hluav taws xob tuaj yeem ua qhov yuam kev ntawm kev xav tias tsuas yog ib qho khoom siv hluav taws xob yuav tsum tau siv rau kev sim fuse-fuse (los ntawm kev teeb tsa lub zog hluav taws xob tam sim no rau lub melting tam sim no tus nqi ntawm lub fuse). Qhov no tsis yog li ntawd.
Yog vim li cas vim li cas ib lub hwj chim tsis tuaj yeem ua tiav qhov kev sim fuse-fuse feem ntau yog vim Ohm txoj cai. Hauv feem ntau ntawm fuse-fuse xeem, cov neeg siv feem ntau tsis ntsuas qhov ntsuas tus nqi ntawm lub fuse. Tsis tas li ntawd, tus nqi tiv thaiv ntawm lub fuse tuaj yeem hloov pauv vim qhov hloov pauv kub, uas ua rau nws tsis tuaj yeem siv cov ntsuas ntsuas raws li tus qauv siv. Ntawm qhov tod tes, txawm hais tias cov khoom siv hluav taws xob hauv chaw kuaj mob muaj ob qho tib si tsis tu ncua thiab cov qauv tam sim no, kev ua haujlwm nyob rau hauv hom tam sim no muaj kev sib raug zoo nrog lub impedance ntawm lub Circuit Court thiab tsim nyog lub hwj huam mov parameter teeb tsa. Yog li, hauv kev sim fuse-fuse, nws xav tias lub zog hluav taws xob yuav ua haujlwm hauv hom tam sim no.
Raws li tau hais ua ntej, qhov hluav taws xob tso tawm tam sim no tus nqi yog lub melting tam sim no rau lub fuse. Yog li ntawd, qhov tsim nyog qhov hluav taws xob thiab kev ntsuas ua ntej ntawm qhov kev tiv thaiv tus nqi ntawm lub fuse thiab kev suav cov kauj ruam yog qhov tseem ceeb rau kev ua tiav cov txheej txheem kuaj. Yog tias tsis yog, qhov kev xeem tsis tuaj yeem ua tiav.
Hauv cov ntsiab lus, thaum ua qhov kev sim fuse-fuse, nws yog ib qho tseem ceeb uas yuav tau xav txog cov xwm txheej saum toj no kom ntseeg tau tias cov txiaj ntsig raug.