Nyob rau hauv North American Kev Lag Luam Hluav Taws Xob, Nm {- b cable (Tsis - nws yog xim hlau nplaum nkhaus cable) yog ib qho ntawm cov kev xaiv ntau tshaj plaws rau cov chaw nyob thiab cov hluav taws xob coj mus muag. Ntawm lawv,12/2 nm - b hlauyog feem ntau tshwm sim, pom nyob rau hauv yuav luag txhua tsev neeg tau txais thiab teeb pom kev zoo Circuit Court.
Tsis tau, ntau cov neeg cog lus, hluav taws xob, thiab cov tswv tsev muaj cov lus nug tib yam:
👉 Muaj pes tsawg amps muaj peev xwm 12/2 n2 nm- b hlau kev nyab xeeb?
👉 Nws yuav piv nrog lwm yam NM - b hlau ntau thiab tsawg?
👉 Kuv yuav xaiv hom xaim xaim twg yog kuv tes haujlwm yuav tsum muaj qee yam sib txawv?
Kab lus no muab cov lus teb ntau, npogNEC cov cai siv, kev ntsuas ampacity, tiag- Cov ntawv thov hauv ntiaj teb, hlau loj sib piv, thiab xaiv cov lus qhia.Ua ke nrog peb cov kev paub hauvUL & Cul ntawv pov thawj cable tsim thiab xa tawm, koj yuav tau txais ob qho kev pom tseeb thiab cov khoom lag luam xav tau rau kev npaj nyab xeeb thiab ua tau zoo.
Nkag siab 12/2 nm - b hlau
Cov qauv thiab cov ntsiab lus
- 12 AWG: Hais txog American co xaim gauge # 12 (kwv yees} mm dig, 3.31 hla hla kev), tus neeg xyuas tooj liab nruab nrab.
- /2: Qhia tias lub cable muajOb tug neeg saib xyuas cov insulated (dub thiab dawb) + ib tug neeg tooj liab liab hauv av.
- Nm - b: Tsis - nws yog xim hlau cable, nrog "b" sawv cev90 Degree Ridation Rwb thaiv tsev(Txawm tias nyob rau hauv nec thaj chaw nyob hauv nruab nrab, txwv rau 60 degree).
Txheem Amp Kev Ntsuas
Raws liNec 310.16, ib 12 AWG tus neeg xyuas tsiaj nyob rau hauv ib txwm muaj mob yog nyob ntawm20 ampsCov. Yog vim li cas12/2 NM {{- b hlau feem ntau yog siv rau 20A ceg circuits, powering receptacles, cov khoom siv me me, thiab teeb pom kev zoo.
⚠️TSEEM CEEB: Txawm hais tias rwb thaiv tsev rwb thaiv tsev tso cai ntau ampacity ntawm 90 degree,Nec 240.4 (d)xav tau cov chaw nyob ntawm cov chaw nyob ua raws li 60 degree, txwv 12 AWG tooj liab rau20 amps siab tshaj plaws.
Ampacity tsom xam ntawm12/2 nm - b hlau
Cov Ntsiab Lus Tseem Ceeb uas cuam tshuam Ampacity
- Thaj kub cua sov: Sab saum toj 86℃f (30 degree) yuav tsum tau muab tsev.
- Txoj kev teeb tsa: Bundled cables lossis conduit tau sau txo cov cua sov dissipation.
- Cov Khoom Siv Ua: Tooj nqa khoom tshiab tshaj li txhuas nyob rau tib lub ntsuas cua.
- Tso tseg: Rau ntev - deb} deb khiav, voltage poob yuav tsum tau txiav txim siab.
NEC Code Siv
NtawmNec 240.4 (d):
- 14 AWG Tooj Liab → Max 15a
- 12 AWG Tooj Liab → Max 20a
- 10 AWG Tooj Liab → Max 30a
Yog li ntawd, 12/2 nm - b yog code {}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Pom zoo rau20A thaj chaw nyob nruab nrab{{0- Muaj kev nyab xeeb, txhim khu kev qha, thiab qauv.
Tiag {- Cov Ntawv Thov Thoob Ntiaj Teb: Muaj pes tsawg amps tuaj yeem ua 12/2 n2} b lis?
| Daim ntawv thov | Pom zoo tam sim no | Haum rau 12/2 nm - b? | Sau ntawv |
|---|---|---|---|
| General Receptacle Circuits | 20A | ✅ Yog | Feem ntau cov chaw nyob siv, muaj kev nyab xeeb & txhim khu kev qha |
| Teeb Pom Kev Zoo | 15–20A | ✅ Yog | Tuaj yeem txhawb nqa ntau cov khoom siv, saib tag nrho wattage |
| Chav Ua Noj Receptacles / MICOWave | 20A | ✅ Yog | NEC yuav tsum muaj tsawg kawg yog ob 20 leej me me appiance ncig |
| Lub tub yees, tshuab ntxhua khaub ncaws | 20A | ✅ Yog | Muaj kev nyab xeeb rau ntawm nplooj taw hluavtaws |
| Chaw Tso Cua Sov / Dej Rhaub | 20A | ⚠️ Yog tab sis txwv | Ua haujlwm, tab sis lub sijhawm ntev log tuaj yeem ua rau cua sov-10 AWG pom zoo |
| A / c units, ncu, cov tshuab ziab khaub ncaws | >30A | ❌ Tsis yog | Yuav tsum muaj cov hlau loj (10/2, 8/3, 6/3) |
👉 Tag:
12/2 nm {- b x xaim yog qhov zoo tagnrho rauFeem ntau hauv tsev neeg ceg ceg nce mus txog 20a, tab sis tsis haum rau siab - cov khoom siv hluav taws xob muaj zog tshaj 20a.
Feem ntau nm - b hlau ob qhov ntau thiab tsawg tsawg
Tsis kav12/2 nm - b, Nm {{{- b tsev neeg suav nrog ntau qhov ntau thiab tsawg, txhua tus nrog nws tus kheej ampacity thiab application.
| Ntaus | Tag nrho (DISG) | Tus saib xyuas | Roj hmab | Cov Kev Siv Cov Ntawv Siv |
|---|---|---|---|---|
| 14/2 nm - b | 14 AWG | 2 + av | 15A | Teeb pom kev zoo, lub teeb - lub luag hauj lwm |
| 12/2 nm - b | 12 AWG | 2 + av | 20A | Receptacles, teeb pom kev zoo, cov khoom siv me me |
| 10/2 n ~ - b | 10 AWG | 2 + av | 30A | Dej Tso Dej Sov, HVAC, Chaw Tso Cua Sov |
| 10/3 nm - b | 10 AWG | 3 + av | 30A | 220V cov khoom siv, sib faib -} theem muab |
| 8/3 nm - b | 8 AWG | 3 + av | 40A | Ranges, ncu, cov khoom siv hnyav |
| 6/3 nm - b | 6 AWG | 3 + av | 55A | HVAC loj, cov twj kub, kev thauj khoom |
👉 Tseem Ceeb Takaways:
- 14/2Zoo tshaj rau 15a teeb pom kev zoo voj voog.
- 12/2Tus txheej txheem rau Xyoo 5A tsev.
- 10 AWG thiab saum toj noRau hnyav - cov khoom siv hvac.
- / 3 hom→ Muab cov neeg kos npe ntxiv rau 240V sib faib -}} theem nra.
-
Xaiv txoj cai cable
Tshaj li nm {- b, lwm yam hlau muaj nyob rau cov chaw sib txawv.
| Hlau Hom | Nta | Cov Kev Siv Zoo Tshaj |
|---|---|---|
| Nm - b | Sab hauv tsev, cov chaw qhuav, nqi -}}}} | Thaj chaw receptacles, teeb pom kev zoo |
| Hwj chim | Ib Leeg Tus Kws Saib Xyuas, cua sov - Tsis kam, Conduit Rated | Muaj Panels, Motors, Tswj Kav Hlau |
| UF - b | Noog noo - Tsis kam, Ncaj Ncees | Sab Nraum Zoov Khiav, Toj roob hauv pes lub teeb pom kev zoo, av hauv av |
| Xhhw | Hla -}} Txuas Rwb thaiv tsev, siab Temp & Tshuaj lom neeg resistant | Muaj Nroj Tsuag, Pub Noj, Siab -} Muaj Peev Xwm Vircuits |
Cov lus qhia xaiv:
- Kev thauj khoom laij: Amps {=} tag nrho cov watts ÷ voltage.
- Huab cua: Sab nraum zoov / av xav tau UF - b lossis xhhw.
- Kev Ruaj Ntseg: Khaws loads tsawg dua lossis sib npaug rau 80% ntawm xaim ampacity.
- Kev ceev kev cai: Nco ntsoov ua raws NEC & UL cov lus qhia.
Cov khoom lag luam zoo & kev sib koom tes tus nqi
Los ntawm kev xaivDongguan Ntau Ntau Hlau & Cable Co., Ltd., koj nce:
Cov khoom lag luam zoo
- Tag nrho ntau: nm {- b, thhn, uf - b, xhhw
- Ul & cul ntawv pov thawj, ua raws li peb / Canada cov qauv
- Tus Qauv Kev Pab los ntawm 14 AWG rau 6 AWG
Logistics Lub Zog
- Cov sijhawm ua kom ceev ceev, hloov tau rau qhov loj lossis cov xaj xaj me me
Kev Pabcuam Zoo
- Kev Txhawb Nqa Cov Kws
- Ua ntej {- Kev Muag Khoom Kev Muag Khoom + Tom qab - kev muag khoom ruaj khov
Kev paub thoob ntiaj teb
- Xyoo Kev Tsim Kho & Kev Txom Nyem Kev Tshaj Tawm
- Cov Neeg Koom Tes Thoob Tebchaws North America, Europe, thiab dhau
👉 seb koj tes num yogme me - nplai nyob ntawm thaj chawlossisLoj - nplai coj mus muag, peb xa cov kev txhim kho kev ua haujlwm nrog kev ntseeg tau thiab kev ua raws thoob ntiaj teb.
Hu rau kev ua -} hu rau peb
Nrhiavhigh - Zoo 3/2 NM - b hlaulossis lwm ul -}} Tau muab ntawv pov thawj cables?
Ncav tawm hnub no rau kev hais lus thiab cov kws tshaj lij kev txhawb nqa:
📌 Dongguan Ntau Ntau Hlau & Cable Co., Ltd.
Tel / whatsapp / wechat: {+86 135 1078 4550 / +86 136 6257 9592
Email: manager01@greaterwire.com
Peb cia siab tias yuav yog koj tus khub uas ntseeg siab ua kom muaj kev nyab xeeb thiab siv hluav taws xob zoo.