Kev teeb tsa ntawm cov kev sib tw hauv qab yuav tsum yog tso cai hauv qab ntawm cov pob zeb lossis lwm yam khoom siv hauv avlossis hauv chaw ua haujlwm nyob qhov twg nteg dej ntws nrog cov pob zeb hauv pem teb thiab npog nrog linoleum lossis sib npaug hauv pem teb cover.
Dab tsi yog qhov sib txawv ntawm txoj kev sib tw thiab cov kav dej?
Conduit yog lub raj lossis lub qhov dej tiv thaiv hluav taws xob. Cov kav dej kuj tuaj yeem raug xa mus rau cov kav dej, yeeb nkab, raj, channel, gutter lossis trench. Ib txoj kev sib tw yog ib qho txuas txuas uas tsim ib txoj hauv kev rau kev xa hluav taws xob.
Kev sib tw hauv qab yog dab tsi?
Ib qho kev sib tw hauv qab muaj ntawm cov ducts pw hauv qab ntawm hauv pem teb thiab sib cuam tshuam los ntawm kev tshwj xeeb cam khwb cia-hlau pem teb hlws ris thawv. Cov ducts rau underfloor-raceway systems yog ua los ntawm fiber ntau los yog steel.
NEC tsab xov xwm twg muab cov kev cai tshwj xeeb rau cellular qhob pem teb raceways?
295. Txoj Cai Hluav Taws Xob Hauv Tebchaws piav qhia txog "kev sib tw ntawm tes ntawm tes hauv pem teb" nyob rau hauv thaj tsam ntawmTshooj 372raws li "qhov khoob hauv cov plag tsev tsim los ntawm precast cellular-concrete slabs, nrog rau cov hlau tsim nyog tsim los muab nkag mus rau hauv pem teb cell." Ib lub xovtooj tau txhais hauv NEC Sec.
Puas yog txoj kev sib tw hluav taws xob ntau tshaj plaws siv hauv txhua hom kev tsim kho?
Txoj kev sib tw tshaj plaws yog conduit (ob leegcov hlau thiab nonmetallic) thiab cov ntawv hlau-hlau hlau ntawm ntau yam kev teeb tsa.
