Na ojiji ọkụ eletrik, ihe ize ndụ nke ọkụ eletrik dị elu na-agụnye ịka nká nke mkpuchi eletrik na ebelata. Ọ bụrụ na voltaji ahụ gafere otu mpaghara, ọ nwere ike ịgba ọkụ ngwa ngwa dịka TVs, DVD, Stereos, na ndị ọzọ nwere nsogbu ma ọ bụ ọbụna ihe ọghọm ọkụ. N'aka nke ọzọ, voltaji dị ala nwere ike ibute elu dị ugbu a n'ihi ike dị elu nke ibu ahụ, nke nwere ike ibute nnukwu mmebi morrs na ikuku na-eme mkpọtụ. Ihe atụ nke ngwa ala nwere obere ihe na-emetụta friji, friza, nmps mmiri, ebe ịsa mmiri, na-adọ mmiri, na igwe mkpuchi. Ngwa ngwa ngwa ngwa ọrụ anyị na-enye anyị ihe ngwọta akụ na ụba na nke bara uru iji lebara okwu a anya. Iwe ihe mkpuchi 220V dị ka ihe atụ, anyị nwere preset bara uru, ka anyị kwuo nrụpụta ụlọ ọrụ nrụpụta bụ 165-250V. Mgbe voltaji dara n'okpuru 165v ma ọ bụ gafere 250v, ngwaahịa anyị ga-ebipụ ike ọkọnọ iji kpuchido ngwa eletriki. Ozugbo igwe na-alaghachi na ogo ahụ, a ga-eweghachi ike ikuku.