1. Bambancin kariya na babban gidan wuta da aka tsara da kuma kerarre bisa ga ka’idar circulating current, yayin da gas kariya an ƙera shi kuma an ƙera shi bisa ga yanayin da za a samar da iskar gas ko rugujewa lokacin da ɓarna na ciki ya faru.

2. Bambance-bambancen kariya shine babban kariya na na’urar, kuma kariya ta iskar gas ita ce babbar kariya lokacin da na’urar ta lalace a ciki.

3. Dangane da nau’ikan kariya daban-daban: Kariyar Bambanci: 1) gajeriyar da’ira mai nau’i-nau’i da yawa yana faruwa a cikin babbar waya ta gubar ta transfoma da na’urar wuta. 2) Mahimman juyi-zuwa-juya gajeriyar da’ira na lokaci guda. 3) A cikin babban tsarin ƙasa na yanzu, kare kuskuren ƙasa na coil da wayar gubar. B Kariyar Gas: 1) Multi-phase short circuit a cikin taswirar. 2) Juya gajeriyar kewayawa, tsaka-tsaki da ƙarfe na ƙarfe ko waje da gajeriyar kewayawa. 3) Rashin ƙarfin ƙarfe ( dumama da ƙonewa). 4) Za a yi ko yabo mai a ƙarƙashin saman mai. 5) Mai canza famfo yana cikin mummunan hulɗa ko wayar ba ta da kyau sosai.