Overload kariyar kariya magana ce a cikin tsarin lantarki wanda ke hana lalacewa ko gazawar saboda wuce haddi na yanzu. Yawancin lokaci yana aiki ta hanyar katse wutar lantarki lokacin da ya wuce matakin lafiya, ko dai ta hanyar busa ƙaho ko kuma yaduwar mai fita. Wannan yana taimakawa hana overheating, wuta, ko lalacewar abubuwan haɗin lantarki wanda na iya haifar da kwarara na yanzu. Overload kariyar kariya shine mahimmancin aminci a cikin tsarin tsarin lantarki kuma ana yawan samun yawancin na'urori kamar saƙo, da'ira masu fashewa da fis.
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