N'ime usoro nke iji ọkụ eletrik, ọ bụ ezie na ndị mmadụ achọpụtala na nha nke mpaghara cross-section nke eriri ọkụ na-enwe mmetụta na iji ọkụ eletrik dị mma, ha na-etinyekarị uche na-adịghị mma maka iji teepu eletrik na-ekpuchi ihe maka nkwonkwo. .Ugbu a, ntinye nke eriri ọkụ na-aghọwanye mgbagwoju anya, a pụkwara ịchọta ha n'okpuru ala osisi, na mgbidi, na nkebi, na ala mmiri ma ọ bụ mmiri.Ọ bụrụ na ejiri teepu eletrik na-ekpuchi ihe na-ekwesịghị ekwesị, ntanye ọkụ ga-eme, nke nwere ike itinye nchekwa nke onwe gị n'ihe ize ndụ.Yabụ na anyị ga-eji teepu eletriki mkpuchi mkpuchi nke ọma.
Ihe ize ndụ ndị a zoro ezo ga-etinye nchebe onwe onye n'ihe ize ndụ ozugbo, mee ka usoro sekit dị mkpirikpi, ma kpata ọkụ.The n'elu ọnọdụ agaghị eme na ojiji nke insulating nwa teepu, n'ihi na o nwere ụfọdụ ike na mgbanwe, nwere ike tightly ọnya gburugburu nkwonkwo ruo ogologo oge, ọbụna ma ọ bụrụ na ọ na-emetụta oge na okpomọkụ, ọ gaghị adị mfe. dapụ, na ire ere.Ọzọkwa, iji teepu ojii na-ekpuchi ya wee kechie ya na teepu rọba nwere ike igbochi mmiri na nchara.