Nyob rau hauv cov tshuab hluav taws xob hluav taws xob, kev nyab xeeb thiab kev ntseeg tau ib txwm nyob ntawm xaiv hom txoj cai cable. Ib qho ntawm cov tsis tseem ceeb tshaj plaws uas txiav txim siab seb cov hlau ua yog nws li casQhov Ntsuas KubCov. Xaiv txoj hlua cable tsis xav txog nws lub peev xwm kub tuaj yeem ua rau muaj kev kub ntxhov, txo lub neej, lossis hluav taws xob hluav taws xob.
Ntawm cov hlau ntau hom muaj,Nm {- b cabletau dhau los ua ib qho ntawm cov kev siv cov kev siv daws teeb meem feem ntau hauv cov haujlwm hauv cheeb tsam thiab cov phiaj xwm kev lag luam. Tab sis dab tsi raws nraim yog qhov ntsuas kub ntsuas ntawm nm - b, thiab nws cuam tshuam li cas rau nws cov ntawv thov? Hauv tsab xov xwm no, peb yuav tshawb txog covQhov kub thiab txias tshwj xeeb ntawm nm - b, nws cov qauv, kev siv, thiab sib piv nws nrog lwm cov xaim nrov xws liThhn, UF - b, thiab xhhwCov. Thaum kawg, peb yuav muab cov lus qhia rauYuav Xaiv Hlau Rau Koj Txoj Haujlwm, txhawm rau ua kom muaj kev nyab xeeb thiab kev ua tau zoo.
Dab tsi yog nm - b cable?
Nm {- b sawvTsis - nws yog xim hlau sheathed cable, hom bCov. Nws yog ib tug qauv cable siv nyob rau hauvCov Ntawv Siv Hluav Taws XobHauv North America. Nws lub ntsiab ua haujlwm suav nrog:
- Muab faib rau lub zog rau kev teeb pom kev zoo voj voog
- Txuas cov tsev neeg cov khoom noj
- Cov cuab yeej siv cov khoom siv uas muaj chaw nyob xws li cua txias, ncu, lossis cua sov
Nm {- b yogUL TSIM NYOGthiab ua raws li covNational Electrical Code (NEC), ua rau nws xaiv tau kev ntseeg siab rau cov hluav taws xob thiab cov lag luam. Tsis zoo li lwm cov xov hlau tshwj xeeb, nm - b yog tsim tshwj xeeb rauSab hauv tsev cov chaw qhuav, uas ua rau nws qhov kub tshaj tawm ib qho tseem ceeb.
Cov qauv thiab cov ntaub ntawv ntawm nm - b cable
Nm {- b cable yog muaj los ntawm peb cov khaubncaws mov tseem ceeb:
1.Copper Callcus- Cov xov tooj liab lossis tawv tawv hlau uas nqa hluav taws xob tam sim no.
2.PVC (polyvinyl chloride) rwb thaiv tsev- Muab cov hluav taws xob rwb thaiv tsev thiab qhov kub kuj.
3.Qhmopoplastic sheath- Ib qho tsis - nws yog xim hlau tiv thaiv sab nraud uas cov duab thaiv ntawm kev puas tsuaj.
Txhua ntawm cov khoom no ua lub luag haujlwm ntawm kev txiav txim siab lub peev xwm kub muaj peev xwm. TusPVC Rwb Thaiv Tsevtuaj yeem coj cov kub, thaum cov hnab riam muab kev tiv thaiv ntxiv hauv ib puag ncig ib puag ncig.
Qhov ntsuas kub ntawm nm - b cable
Qhov ntsuas kub ntsuas ntawm nm - B cable feem ntau tsis to taub. Cia qhia meej:
- Kev Ntsuam Xyuas Kev Ntsuam Xyuas:Tus neeg xyuas tooj liab nyob sab hauv nm - b yog rated rau90℃(194 Qib F).
- Code txwv:Raws li NEC yuav tsum tau ua, nm {- b cables yuav tsum tau siv nyob rau ntawm60℃(140℃f)Thaum txuas nrog cov khoom siv xws li cov receptacles, hloov pauv, lossis cov kev sib txuas.
👉 Qhov no txhais tau thaum lub cable nws tus kheej tuaj yeem tiv taus ntau dua tshav kub, nws cov kev siv tiag tiag yog txwv los ntawmKev sib txuas lus tsis raug.
Piv txwv li:
- A 12 AWG nm - b cableYuav thev naus laus zis tam sim no AT 90 degree, tab sis nec kom nws yuav tsum tau me me raws li nws 60 degreg ampacity, uas yog 20 amps.
Vim li cas ho ntsuas qhov tseem ceeb?
Xaiv qhov tsis raug cable kub ntsuas tuaj yeem ua rau:
- Overheating→ ua rau rwb thaiv tsev puas
- Luv Luv LuvNtawm Cov Hluav Taws Xob
- Kev phom sij tua hluav tawsYog tias tam sim no tshaj li kev nyab xeeb txwv
Piv txwv li:Hauv chav ua noj uas cov vaj tse tsim cov cua sov ntxiv, siv txoj hlua cable nrog tsis txaus ntseeg tau tuaj yeem ua rau tsis ua haujlwm thaum ntxov. Ib yam li ntawd, nyob rau hauv lub nthab nruab uas ambient kub yog siab dua, kev txheeb khoom ntawm cov kab ua ke ua qhov tseem ceeb.
Cov lus qhia tshwj xeeb ntawm nm - b cable thiab lawv cov ntawv thov
Nm {- b yog muaj nyob rau hauv ntau txoj kev ntsuas thiab kev teeb tsa. Hauv qab no yog cov lus ntawm cov ntau thiab tsawg, lawv ampacity, thiab cov ntawv thov (raws liNec 60℃ntsuam xyuas):
| Hlau Galoos | Tsis yog. Ntawm tus cwj pwm | Ampacity (60 degree) | Ib Daim Ntawv Thov |
|---|---|---|---|
| 14/2 nm - b | 2 Cauv Khoom + Av | 15A | Teeb Pom Kev Zoo |
| 12/2 nm - b | 2 Cauv Khoom + Av | 20A | Receptacles, cov khoom siv me me |
| 10/2 n ~ - b | 2 Cauv Khoom + Av | 30A | Dej Tso Dej Sov, Tshuab ziab khaub ncaws |
| 8/3 nm - b | 3 Ciav Rau Hauv Av | 40A | Hluav taws xob ntau |
| 6/3 nm - b | 3 Ciav Rau Hauv Av | 55A | HVAC tshuab, cov khoom siv hnyav |
Cov lus qhia no pom li casKub Li + Hlau GaugeUa ke ua ke txiav txim siab daim ntawv thov kev nyab xeeb ntawm nm - b cable.
Nm {- b v vs lwm cov hlau hom: qhov kub
Thaum né {- b muaj ntau nyob hauv tsev, lwm cov xov hlau feem ntau siv thaum ib puag ncig kub siab dua lossis ib puag ncig hnyav yog koom nrog:
| Hlau Hom | Qhov Ntsuas Kub | Huab cua | Qhov Tseem Ceeb |
|---|---|---|---|
| Nm - b | 90 Degree Tripor, txwv rau 60℃kev siv | Qhuav Sab Hauv Tsev | Nqi -} Ua tau zoo rau cov khoom siv hluav taws |
| Hwj chim | 90 Degree Qhuav, 75℃ntub | Conduit, kev lag luam | Qib Siab Tshaj & Tshuaj Tshuaj Kuj |
| UF - b | 90 degree, ncaj ncaj faus neeg rated | Sab nraum zoov, hauv av | Ya raws thiab tshav ntuj tiv taus |
| Xhhw | 90℃qhuav / ntub dej | Muaj, siab - phoo | Thaum tshav kub kub zoo heev & puas tsis kam |
Los ntawm qhov kev sib piv no, nm - b yog qhov zoo rauKev siv sab hauv tsev, thaum thhn, UF {{{- b, thiab xhhw muaj ntau ntau yam hauv kev xav tau.
Dab tsi kub yog nm - b?
Los ua kom lub ntsab lug:
- Nm {- b cable cov neeg coj ua tau nyob ntawm90℃(194 Qib F).
- Nec kom nws yuav tsumsiv ntawm 60℃(140℃f)rau feem ntau txiav.
- Cov ntawv thov yuav tsum ua raws li covTxo Kev NtsuasTxhawm rau kom muaj kev nyab xeeb.
Yuav ua li cas xaiv los ntawm scenario:
- Nyob sab hauv tsev (qhuav)→ nm {- b yog qhov kev xaiv zoo tshaj plaws.
- Qhov chaw kub / muaj→ thhn lossis xhhw pom zoo.
- Sab nraum zoov / Underground→ uf - b yog qhov kev xaiv kom raug.
Xaiv cov hlau ntau dua rau nm - b thiab ntau dua
Thaum socing cables rau cov phiaj xwm thoob ntiaj teb, koj xav tau lub chaw tsim khoom uas muajZoo, Daim Ntawv Pov Thawj, thiab Kev Pabcuam Txhim Kho.
✅ Ua tiav cov khoom lag luam– NM-B, THHN, UF-B, XHHW, and more UL-listed cables.
✅ Ntawv pov thawj zoo- UL & CUL pom zoo, ua raws li NEC thiab CSA cov qauv.
✅ Kev Siv Khoom Siv Siv Tau- Tag nrho cov khoom hauv 14 AWG rau 6 tsis tau- b, muaj rau cov kev txiav txim me me.
✅ Kev Tshaj Tawm Thoob Ntiaj Teb- Tshaj li 30 xyoo ntawm kev tsim khoom thiab xa tawm, pabcuam cov neeg yuav khoom thoob plaws North America, Europe, thiab Asia.
✅ Dedicated Kev Txhawb- Tus kws tshaj lij engineers muab cov kev taw qhia txuj ci; Peb pab pawg muag khoom ua kom cov kev sib txuas lus zoo los ntawm kev nug kom xa khoom.
Tiv tauj peb rau hnub no
Yog tias koj tab tom npaj koj cov hluav taws xob txuas ntxiv thiab xav tautxhim khu kev qha nm {- b los yog lwm-}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}, Peb nyob ntawm no los txhawb koj.
Dongguan Ntau Ntau Hlau & Cable Co., Ltd.
📞 Kel / WhatsApp / WeChat:+86 135 1078 4550 / +86 136 6257 9592
Email Email:manager01@greaterwire.com
👉 Tsis muaj teeb meemQhov Loj, peb muabKev daws teeb meem, kev txhawb nqa kev tshaj lij, thiab yav dhau los tom qab {{0} Kev pabcuam muag muagCov. Tus khub nrog peb thiab xyuas kom koj cov xov hluav taws xob ua haujlwm tau tsim rau kev nyab xeeb thiab ntev- term kev cia siab.