Nnukwu voltaji 120kn diski nkwusioru siri ike iko mkpuchi U120B Igwe mkpuchi iko anyị nwere arụmọrụ mkpuchi dị mma.N'okpuru ọnọdụ akọrọ na mmiri ozuzo, ọ nwere ike iguzogide voltaji akọwapụtara na ọkọlọtọ akwụkwọ ndụ akwụkwọ ndụ, nwere ike ịrụ ọrụ zuru oke, nwere ike iguzogide nnukwu mgbanwe okpomọkụ na-enweghị mgbawa, ngwa ngwa ịka nká na ogologo ndụ ọrụ.O nwere mgbochi mmetọ zuru oke yana ikike mmebi ikuku gas.