Chinhu chinonyanya kudiwa nevatsvaga vekushandisa magetsi kushandiswa zvisina kukodzera kweNM (isina-metallic cable) munzvimbo dzakasununguka, dzakadai sepasi pedenga nheyo dzemadziro kana kuti pamwe nechokunze kwezvidzidzo uye joists munzvimbo dzisina kukwana dzakagadzirirwa. Iko National Electrical Code, iyo ndiyo nheyo yemataundi ese ekuvakwa kwemukati, ine mitemo yakananga yekuisa mafaira emagetsi kuitira kuti idzivirirwe kubva kune zvinokuvadza.
Kushandiswa Kwakakodzera kweNM Cable (Romex)
NM cable, iyo inowanzonziwo nezita rinowanzozivikanwa nezita reRomax), ndiyo inonyanya kufanana nematare emagetsi.
NM kambani inongova bundle romunhu mumwe nomumwe anotambanudza faira akaputirwa mune plastiki vinyl kunze kunze. Kazhinji tambo dzinotakura 10-, 12-, kana 14-gauge dzinoita foni dzemataundi edzimba imwe neimwe. Kufuridzira pamusoro peNM cable kunopa zvishomanana munzira yekudzivirira kukuvara kwemuviri, saka inogamuchirwa kuti ishandiswe chete mumamiriro ezvinhu apo tambo dzinodzivirirwa pane zvinoparadza, kusanganisira:
- Mukati kumadziro masvingo akavharwa nemapuranga akapera, apo kambani haingasviki
- Kumhanya pakati pezvikwereti zvakajeka kana zvipfeko, zvakapiwa kuti micheka yacho inodedzeswa kure nechiso chenhengo dzinomira. Izvi zvinowanzoitwa nezvikokovonho zvinokanganisa mumasangano evanhu vanogadzirisa nhengo uye kushandura tsamba kuburikidza nemakomba.
Kushandiswa kusina kunaka kweNM Cable
I National Electrical Code inorambidza kushandiswa kweNM cable (Romex) mumamiriro ezvinhu apo inoratidzwa nenzira iyo kukuvara kwepanyama kunogona. Kazhinji kazhinji, izvi zvinowanikwa apo nyanzvi yemagetsi inosungiridza NM cable kumativi ose epamberi pezvidzidzo kana kuti pedo joists, kana kuti yakanamatirwa nechokunze kwekwakadzika masvingo masvingo.
Kunyange zvazvo zvigamuchirwa kuti NM cable ikwanise kuputika mumakomba akaputika mumasangano ekubudiswa pachena kune nhengo, haigoni kuiswa pameso ekutanga emakumbo, nokuti izvi zvinoita kuti mukana wekunyunyutira kana kukanganisa kumatare. Saizvozvowo, NM yakasungirirwa kune chiso chekrete masvingo inogona kutyiswa uye inoshorwa.
Wiring Wakafanira Nzvimbo Dzakaratidzwa
Pane, kunyange zvakadaro, nzira yakagamuchirwa yekushandira wiring pane zvisikwa zvakajeka. Mune mamiriro ezvinhu aya, nzira yakakosha yekugadzira ndeyekugadzira mutezo unogamuchirwa unogadziriswa kune nhengo dzomukati kana kuti rusvingo, unomhanya mumwe nomumwe weTNN conductor waya mukati memudonzvo . Wiring iyo yakanyatsodzivirirwa pakusanganisa muviri.
Tsanangudzo yakananga kubva kuNational Electrical Code yakanyorwa seyizvi:
Kudzivirira kubva Muviri Kuparadza. Ngara inofanira kuchengetedzwa kubva mukukuvara kwepanyama kana zvichidikanwa nechitsiko chesimbi chesimbi chakasimba, sendima yepakati yedare, magetsi emataundi emataipi, Purogiramu 80 PVC duct, RTRC Rudzi rwechikwata runogadziriswa -XW, kana dzimwe nzira dzinogamuchirwa.
Nzira yakakurumbira yemudonzvo inozivikanwa se EMT (Electrical Metallic Tubing), asi mamwe maitiro emudonzvo inoshandiswawo, kusanganisira FMC (flexible metal conduit), IMC (iri pakati pematope endarira, iyo inogara yakasimba uye inopa kuwedzera kurwisa kurora), PVC (purasitiki yepurasitiki, inowanzoshandiswa pasi pevhu), uye RMC (yakaoma metero duct, iyo yakareba kupfuura yose inowanika.).
Dhigiriyumu yemagetsi yakagadzirirwa kushandiswa nemhando dzakasiyana dzomunhu anotungamirira mafaira. Matafura anozivikanwa ndeaya THHN, waya, ayo ari oga mhangura inoita madambo ane mavara-coded, heat-resistant resistance plastic insulation around them.
I National Electrical Code ine mitemo yakananga yekuti ingani dzomutambo dzinogona kukwanisa kupinda mukati mechitsiko chemazana akaenzana. Dhigirii 1/2-inch inogona kushanda yakawanda seyepfumbamwe-12-gauge wires kana gumi nemaviri 14-gauge wires. A 3/4-inch conduit inogona kubata gumi nematanhatu 12-gauge waya kana makumi maviri nemaviri 14-gauge wires.
NM Cable Inside Conduit?
Kana nyanzvi yemagetsi yatsvaga NM cable iyo yave ichishanda zvisina kururama, unogona kuedzwa kuti uise dhoni, uye shandisa zvakare iyo NM cable kuburikidza nekuishandisa iyo nzira itsva. Iyi inyaya yeimwe gakava pakati pemagetsi. Vamwe vanoita nharo kuti NM cable mukati memudhaini inogona kunge inotonhora kupisa-up uye naizvozvo haibvumirwi. Vamwe vanotora maonero ekuremekedza. Kunyange zvazvo National Electrical Code isingarambidzi kuisa NM cable mukati memugwagwa, muchiito, zvakaoma zvikuru kuita kudaro, uye vashoma mashizha magetsi vachaita saizvozvo.
Iyo inogamuchirwa chimiro chekuita chete munhu mumwechete THHN mafambisi (kana imwe fomu yakagamuchirwa yefini) mukati memugero. THHN wiriya haina mari shoma uye zviri nyore chaizvo kumhanya nemudonzvo.