Iindidi zeeMpawu zoMbane - Isicelo kunye nokufakwa

by Juan Rodriguez

Indlela yokukhetha phakathi kwe-EMT, i-PVC kunye nezinye iiComputer

Izixhobo zombane zibhekisela kwinkqubo yamandla esetyenziselwa ukukhusela nokubonelela indlela yombane wombane. Izixhobo zombane zenziwe zetsimbi, iplastiki, okanye i-fiber kwaye ingaba nzima okanye iguquguquke. Iingcingo kufuneka zifakwe ngababanezixhobo zombane zilandela imimiselo emiselweyo, njengalezo zibonelelwe yiNational Electric Code Code (NEC). Nazi ezisixhenxe zeendlela eziqhelekileyo ezisetyenziswayo zombane.

I-Conduit Rigid okanye i-RMC

Umqhubi owenziwe kwi-tubing steel steel tubing ngokuqhelekileyo ubizwa ngokuba ngumzila onzima.

Ubunzima bomqhubi obunzima obukhuselekileyo bukhusela i-wiring yombane ekubetheni kwaye ivumela ukuba ifakwe. Iidolophu ezinamandla ezigciniweyo zisetyenziswe ngababanezixhobo kwiimveliso zorhwebo nezoshishino eziqhelekileyo zifumaneka kwiimitha ezili-10 kunye nobude obungama-20 ubude. Olu hlobo lombane lusetyenziswe ngaphaya kwebanga kwaye linemicu emacaleni omabini ngokuqhagamshela kwelinye icala.

Ukufakela kwe-Rigid Steel Conduit (RSC) ihlanganiswe yiSiqendu 344 seNational Electrical Code® (NEC®). Umzila onqabileyo wensimbi unokuphathwa ukukhusela ukubola ngokufaka iingubo ezahlukeneyo kumjelo. Lona lukhulu kakhulu kwaye lukhulu kakhulu ludonga lwamadonga olunezandla zorhwebo ½ ukuya ku-6.

Ixesha lokusebenzisa i-EMT)?

Omnye umzekelo wesiganeko esinyanisiweyo sombane yi-EMT, eyaziwa ngokuba yi-Electrical Metallic Tubing. Umzila we-EMT wenziwe ngensimbi; Kwezinye iimeko, i-aluminium isetyenziswe kwakhona, ixabiso elincinci kunomgudu oqinileyo ogqithisiweyo kunye nokukhanya ngakumbi kunomgca we-GR.

I-EMT nayo yinto eyaziwayo kakhulu kwizakhiwo zorhwebo nezoshishino kuba zinokuthi zilungele indawo ethile kunye nezikhombisi kwaye zincinci kune-RMC. Kwiminyaka yakutshanje, izixhobo ze-EMT ziye zathandwa ukwakhiwa kweendawo njengoko zinikeza indawo yokumelana ne-outer corrosion resistance.

I-EMT ifakwe kwintambo yesigxina yentsimbi yecandelo lesiphambano esicatshulwayo, elingafundwayo, kwaye ngokuqhelekileyo lide ezili-10 ubude.

Izicelo ezingabonakaliyo zombane

Umbhobho ongekho emzimbeni ongomnye umzekelo wendlela yamandla eyenziwe ngumbumba onobunqamle obunqabileyo obunqabileyo, obunqandeko obunqandeki kunye nomlilo ongenamlilo. Umbane ongeyimbi wombane unakho ukulungiswa ngesandla kwaye unokufakeka lula ngenxa yezakhiwo eziguquguqukayo. Nangona kunjalo, ukusetyenziswa ngokufanelekileyo ukuxhuma unobumba obunamandla obunqabileyo bunzima kwaye awukwazi ukulungiswa. Ukuba ukhangele ukufakela ngokukhawuleza kunye neendleko eziphantsi kwezabasebenzi, nguyena omele ucinge.

I-Flexible Metallic Conduit okanye i-Flexible-tight Flexible Metal Conduit (LFMC)

I-conduit ye-metallic conduit yenza i-tube engenamanzi apho kudluliselwa khona iingcingo zombane. Kucetyiswa kakhulu kwiindawo ezinomileyo. I-Flexible Metallic Conduit nayo ibizwa ngokuba yi-greenfield ye-flex, ayiyi kuhlala igobile kwaye ingasetyenziswa apho i-EMT ayinakusetyenziswa khona.

Nangona kunjalo, i-conduit-tight tight-stable conduit igutyungwe ngengubo yeplastiki engenamanzi. Ingaphakathi laso lifana ne-flexible metal conduit. Kunconywa ukuba kusetyenziswe kwi-wiring jikelele, indawo emanzi okanye yamanzi. Ingasetyenziselwa ukuhambisa ingcwaba; imisebenzi yokukhanyisa indawo kunye neendawo zokukhanyisa indawo.

Umqhubi we-Flexible Nonmetallic Conduit

I-LNFC enye yegama elithile elinamanani angagxininiswayo okungaxilwanga. Olu hlobo lombane lwamanzi lunconywa njengendlela yokuqhubela phambili yokufakela abaqhubi abavunyiweyo kunye nokulinganiswa kwegama elingu-600 ii-Volts okanye ngaphantsi kwiindawo ezingekho eziyingozi. I-interiors yalo mjelo kagesi unokuba yonakaliswe okanye ifakeke.

IiAluminium zombane

Umzila we-aluminium ngumgudu oqatha oqhelekileyo usetyenziswa kwizicelo zorhwebo nezoshishino. Ezi ntlobo zogesi zisetyenziselwa ukukhusela ukubola kunye nomzila okhethiweyo usetyenziswe kwiindawo apho kukho ubuninzi beendawo kunye neendawo ezinokutyebisa. I-Aluminium ayikwazi ukufakwa ngokuthe ngqo kwikhonkrithi njengoko isinyithi siphendule kunye ne-alkalis kwisitoretye kodwa sinokukhuselwa ngeengubo ezongezelelweyo zokukhusela ikhonkrithi ekuchaphazeni umzila.

Ngokuqhelekileyo isetyenziswe kwizikhonkwane ezikhonkco okanye iindonga.

Eyona Yona Eqhelekileyo Yonke Imicuphelo Yombane

I-PVC iyona ndlela elula kakhulu imveliso kwaye ngokuqhelekileyo iyona ndlela inokuthengwa ngayo. Iipayipi zePVC ziyahluka ngobunzima kuye kuxhomekeke ekusebenziseni kwaye apho iPVC ifakwe khona. Umqhubi wePVC unqanda ukunyusa kunye nokubola kodwa i-tubing ayikho into eqhuba ngayo umqhubi womhlaba owongezelelweyo kufuneka adluliselwe kumjelo ngamnye. Umqhubi we-PVC unomlinganiselo ophezulu we-thermal wokwandisa ukuvumela ukuba umjelo ukwandise kwaye usebenze. Qaphela ukufaka i-PVC phantsi komhlaba kwiinkqubo ezininzi okanye ezifanayo, ukufudumala komzimba kungabangela iingxaki ekusebenzeni kwekhebula.