A na-eji njikọ ikuku siri ike jikọọ eriri igwe eletrik, si otú a na-agbatị ogologo nke ọkpọkọ ọkpọkọ. Emepụtara ya site na ọkpọkọ nchara enweghị nkebi dị ka ụkpụrụ ANSI C80.1 na UL6 si dị, yana nọmba asambodo UL nke E308290. Ogo ahia ya nwere ike isi na 1/2 "ruo 6". Anyị nwere ike ime ka isiike conduit njikọ na-ekpo ọkụ tinye galvanized na mpụga elu na electro-galvanized na esịtidem eri na zinc efere na ma pụta size na n'ime akụkụ. Ime elu elu nwekwara ike ịbụ electro-galvanized kpamkpam.