Kana imba yenyu yakavakwa mumakore makumi mashanu ekupedzisira kana zvakadaro, mikana yakazara yeasina-metallic sheathed cable. Icho chinhu chakanaka. Kwete-metallic yakashongedza cable, iyo inonziwo NM cable kana Romex , mushure mezita rakakurumbira rechirwere, inoshandiswa nemagetsi evhavha ine plastiki kunze kwekuvhara. Icho chisati chiri chesimbi chesimbi. Mukati mehaati mune mawambo maviri kana kupfuura akaomeswa uye kazhinji tambo yevhu. Izvozvo ndezvokuchengeteka.
NM cable yakakunakira nokuti yakachengeteka kudarika mazera ekare emucheche uye wiring. Zvakanaka kune magetsi nokuti zvisingabatsiri uye zvakaoma zvikuru kushanda nazvo. Kune mhando dzakasiyana dzeNM cable kune mamwe maitiro ekushandisa.
NM Cable Anatomy
Mukati NM cable kune zvitatu kana kupfuura. Kana iyo kambani iine "tambo mbiri-tambo", ine mahwendefa maviri akaomeswa - imwe yerima uye imwe yakachena - uye imwe yakabata tsvina yemhepo. Utatu-tambo tsvina ine tambo yakasviba, yakachena, uye ine tsvuku yakasvibiswa pamwe chete nevhu rakaoma. Kunyange zvazvo ivhu risina kuverengwa muzita, rine basa rinokosha: rinopa nzira yakachengeteka yemagetsi kutevera kana chimwe chinhu chisingafadzi nemudunhu. Chimwe chinhu chakafanana netambo yakasvibiswa, chinokonzerwa nechigadziro chemagetsi kana chigadzirwa, kana kunyange kuwedzera mune magetsi. Zvose zvepanyika pasi muhurongwa dzinosangana nepamusoro peimba yepamusoro yepaneji (breaker box) uye pakupedzisira kune pasi, uko magetsi anokanganisa anotumirwa.
Iyo michina yakavharidzirwa yakaputirwa mune zvakapetwa mukana we thermoplastic sheathing iyo isingadzidzisi uye inopisa. NM cable inosanganisira kuvhara mapeji mukati meheathing. Kune maonero akasiyana-siyana pamusoro pezvinoitwa nepepa, asi mazano anowanzoitwa ndeokuti anochengetedza mhepo kubva pakunamatira kusvika kumhepo, zvichiita kuti zvive nyore kukotamisa tambo.
NM Cable
NM kambani yebasa remukati inofanidza NM-B k Cable. Ichi ndicho chichena, chine tsvuku, kana machungwa (uye dzimwe nguva chisi) chingaonekwa iwe unofamba uchikwanisa kuburikidza nekugadzika kwepasi risina kupera kana nzvimbo yekuchengetedza. Kana zvisina kudaro, yakavanzwa kumashure kwewomewall kana zvimwe zvinhu zvepamusoro. Tora NM-B cable ndeyekuoma nzvimbo chete, saka haufaniri kuiona kana kuishandisa kunze kana kupi zvako inogona kunyura.
Underground Feeder Cable
Pasi pasi , kana Tsi-UF-B, kambo inonzi NM cable yakakodzera-iwe waifungidzira i-pasi pekuisa. Unogona kuiviga muvhu. Icho chinyoro-kusagadzikana, kupisa-kusagadzikana, uye fungus asingagumi. Hongu, fungus-resistant. Iwe unoda izvozvo apo uri kurarama sub-grade. UF cables inowanzoshandiswa kugovera magetsi kudzivirira magaraji, mashizha, magetsi, nezvimwe zvinhu zvekunze. Inowanzo ine grey sheathing asi inogonawo kuva yakachena.
Basa Rokupinda Cable
Tsamba idzodzo, dzakasviba dzinoita tambo yakakura ye squirrels kumusoro kwemashure ako ndeimwe rudzi rweNM cable. Nyora SE cables rinoshandiswa kunzvimbo yepamusoro yebasa, asi iyo Type USE inoshandiswa pasi pepambo weseya (tarisiro, hauna kumboona avo nokuti zvichida zvinoreva kuti wakanga uchichera musuo rako uye hauna kutevera mutemo we Call kare Usati Waita ).