N'ime ụlọ ọrụ eletriki, a na-ejikarị resin shenmamid® nylon na-emepụta eriri, n'ọbọ, ma melite ntụkwasị obi na ndụ ọrụ nke eriri n'ihi nguzogide oyi ya dị mma, na-eyi nguzogide, nguzogide kemịkalụ, nguzogide mmiri, ihu igwe na-adịghị mma, ihe akaebe nla. arc penetration ugbu a na electrolytic corrosion.Ngwaahịa naịlọn nwere arụmọrụ mkpuchi ọkụ eletrik dị mma, nkwụsi ike olu ya dị oke elu, oke mgbawa voltaji na-eguzogide, bụ ihe mkpuchi ọkụ eletrik mara mma, mana a na-ejikarị ya na relays, obere voltaji jikọtara ọkụ, ọkụ ọkụ ụlọ na ihe ndị ọzọ.