Kusungirirwa pamagetsi emagetsi kunotsinhirwa nemitemo yakasiyana-siyana uye kuverenga kunoratidza hutundu hwemhando uye hutsika hunhu hwekudzivirira. Saizvozvowo, iyo isina mitambo (NM) cable, iyo ine mafaira akawanda, ine zviratidzo pamusoro pekunze kwekunze kwekambo. Kunzwisisa maitiro ekutanga kunobatsira iwe kusarudza rudzi rwakanaka rwetambo kana tambo yeprojekti yako.
Mavara Eki Mafaira Evanhu
Nhengo dzomunhu mumwe nomumwe dzakasara dzinowanzoshandiswa pakuisa mukati memudonzvo kana kushandiswa kwesimbi yendarira.
Nzira yekodhi yepamusoro inobatanidza nehutano hwekushanda kwehutambo hwekupinza. Mhando dzakawanda dzesimbi dzinoshandiswa mukuvakwa kwekugara ndeye THHN uye THWN. Hezvino izvo zvinorehwa netsamba iyi:
- T: Thermoplastic, plastiki isina kupisa inoshandiswa pamhando dzakawanda dzedambo
- H: Inopisa-kupisa kusvika 167 degrees F
- HH: Kusapisa kunopisa kusvika 194 degrees F
- W: Misi isingaiti; yakakodzera kumvura ine mvura uye yakaoma
- N: Nylon-yakagadzirirwa kurwisa kukanganisa kwemafuta uye petroli
Labels On Nonmetallic Cable
NM cable (kusanganisira Romex nedzimwe mhando) yakanyorwa kune kunze kwenguvo yepurasitiki yekunze, kana kuputika. Ngetani dzinogona kutakura nhamba dzakasiyana-siyana dzekuverenga uye kunyora, uye izvi zvinokonzerwa nemagadziri uye faira. Asi mabhuku anonyanya kukosha anoratidza nhamba uye huwandu hwenhare mukati memukati pamwe nekushandiswa kwakakodzera kwekambo. Mhando dzakasiyana-siyana dzekambani inoshandiswa mumisha dzinosanganisira:
- NM-B: Standard NM kambani inokodzera kushandiswa kwemukati munzvimbo dzakaoma; NM cable yakakura yakanyorwa kuti "NM" (pasina "B") ine zvishoma zvishoma kupisa kutsetseka kupfuura tambo yaNM-B yanhasi
- UF: Underground Feeder cable inokodzera kuburitsa kunze uye kuvigwa zvakananga pasi
- SE: Basa Rokupinda mutambo; kunze-rated kambo yepamusoro-soro; chinowanzoshandiswa kuunza simba kubva kumushanduri wevashandi kumusha wevatengi
- KUSHANDISA: Pasi Pasi Pamberi Mutambo wechipfuva; zvakafanana ne SE kabhadhi asi yakarongwa kuti igovigwa zvakananga
Nhamba yeNM cable inoratidza uwandu hwekugadzira uye nhamba yematairi mukati memukati. Nhamba yekutanga ndeyekukura kwetambo kana yejiji; nhamba yechipiri ndiyo nhamba yematare akaomeswa. Semuenzaniso, "14/2" kambani ine midzi 14-gauge yakasungirirwa. Mutambo wakanyorwa 12/3 unoshandisa mitambo 12-gauge insulated wire.
Mukuwedzera kune tambo dzakasungirirwa, vazhinji veNM cable vanobatanidzawo mahwendefa asina tsvina pasi. Dare revhu harina kuiswa munhamba yakanyorwa asi inowanzoonekwa se "G," "w / G," kana kuti "neGround." Somuenzaniso, "12-2 NEZVINHU ZVOSE" zvinoreva tambo iri rine mairi maviri-gauge akavharidza mafaira uye tambo isina tsvina yemhepo.
Pakupedzisira, tambo dzinowanzobatanidza zita rekugadzira uye huwandu hwemhepo yakawanda, iyo inowanzoita 600 volts-zvakanaka pamusoro pe 240 volts iyo inowanikwa yevashandi vemagetsi epamba.
Kukosha Kwehuta Kukura
Waya hukura hunopindirana nehupamhi hwensimbi inogadzirisa tsvimbo, kusina chero kusungirirwa. Zvakakosha nokuti hukuru (pamwe chete nematafura nemamwe maitiro mashomanana) inotarisa kuti magetsi anokwanisa sei kutakura zvakanaka. Waya hukuru hunotarwa neAmerican Wire Gauge (AWG) system. Zviduku zvinyorwa zveAWG zvakakura foni uye, kazhinji kutaura, ikozvino yakawanda tambo inogona kutakura pasina kupisa.
Ikozvino-kutakura simba kunotaridzwa mumamera kana amps. Wiring mune imwe nharaunda inofanira kuva nekodzero yakakodzera yezviyero zvepakati uye mutambi wedunhu achidzivirira dunhu. Somuenzaniso, 14 AWG waya inotaridzirwa maawa gumi nemashanu uye inofanira kushandiswa pamatanho 15-amp circuits. Mimwe mitambo inowanika yakawanda uye kuenzanisa kwavo kunosanganisira:
- 12 AWG-20 amps
- 10 AWG-30 amps
- 8 AWG-40 amps
- 6 AWG-55 amps