Sharuɗɗan Amfani:1. Yanayin zafin jiki bai wuce +40 ℃ ba, ba ƙasa da -40 ℃
2. Tsayin bai wuce 3000m ba
3. Matsakaicin gudun iska baya wuce 35m/s
4. Ƙarfin girgizar ƙasa bai kamata ya wuce digiri 8 ba
Tasiri:Kafaffen bututun fuse da waya gubar na waje.Lokacin da aka haɗa fuse zuwa kewaye, ana haɗa narke a cikin layi a cikin kewayawa, kuma nauyin nauyin yana gudana ta cikin narke.Lokacin da ɗan gajeren kewayawa ko overcurrent ya faru a cikin kewaye, halin yanzu ta hanyar narkewa ya sa ya yi zafi;idan ya kai zafin narkar da narkakkar karfen, zai yi cudanya da kansa, kuma za a datse da’ira mara kyau tare da aikin kashe baka da kuma hanyar kashe baka don taka rawar kariya.