Kuyika pazitsulo zamagetsi kumaphatikizidwa ndi zizindikiro zosiyanasiyana ndi mawerengero omwe amasonyeza mtundu wa waya ndi machitidwe a kusungunula. Mofananamo, chingwe chopanda malire (NM), chomwe chili ndi mawaya angapo, chimakhala ndi zizindikiro pamtambo wa kunja. Kumvetsetsa zizindikirozo kumakuthandizani kusankha mtundu woyenera wa waya kapena chingwe cha polojekiti yanu.
Zilembedwa pa Ma foni Athunthu
Makina opangidwa ndi munthu aliyense payekha amagwiritsidwa ntchito kuti aike mkati mwa dzira kapena zitsulo zosungunuka.
Ndondomeko yamakalata imalumikizana ndi machitidwe a kusungidwa kwa waya. Mitundu yambiri ya waya yogwiritsidwa ntchito pomanga nyumba ndi THHN ndi THWN. Apa ndilo tanthauzo la kalatayi:
- T: Thermoplastic, pulasitiki yopinga kutentha yomwe imagwiritsidwa ntchito pa mitundu yambiri ya waya
- H: Kutha kutentha mpaka madigiri 167 F
- HH: Kukaniza kutentha mpaka madigiri 194 F
- W: Kusagwedeza kwa madzi; yoyenera kumalo osungunuka ndi onyowa
- N: Nylon-yokutidwa kuti asawononge kuwonongeka kwa mafuta ndi mafuta
Zilembedwa Pa Zida Zopanda Zina
Chingwe cha NM (kuphatikizapo Romex ndi mitundu ina) chimatchulidwa kunja kwa jekete lake la pulasitiki, kapena kubisa. Zingwe zinganyamula ziwerengero zosiyanasiyana zamakalata ndi zolemba, ndipo izi zimasiyanasiyana ndi wopanga ndi mtundu wa chingwe. Koma malemba ofunika kwambiri amasonyeza nambala ndi kukula kwa waya mkati mwa chingwe komanso kugwiritsa ntchito chingwe. Mitundu yowonjezereka ya chingwe yomwe imagwiritsidwa ntchito m'nyumba zimaphatikizapo:
- NM-B: Chingwe choyenera cha NM choyenerera ntchito zapakhomo m'malo ouma; NM chipangizo chakale chotchedwa "NM" (popanda "B") chili ndi kutsika pang'ono kusiyana ndi chingwe cha NM-B lero
- UF: Underground Feeder chingwe choyenera kuwonetsera kunja ndikuika maliro pansi
- SE: Chingwe cholowera utumiki; chingwe chokwera kunja kwa machitidwe apamwamba; kawirikawiri amagwiritsidwa ntchito kuti abweretse mphamvu kuchokera ku transformer yowathandiza ku nyumba ya makasitomala
- Gwiritsani ntchito: Chingwe chobisala Chingwe cholowa; ofanana ndi SE cable koma adawerengedwa kuti aikidwe mwachindunji
Kulemba pa chingwe cha NM kumasonyeza kukula kwa wiring ndi nambala ya waya mkati mwa chingwe. Nambala yoyamba ndi waya kapena kupima; chiwerengero chachiwiri ndi chiwerengero cha zingwe zopindika. Mwachitsanzo, chingwe cha "14/2" chili ndi mawaya awiri omwe amayendera. Chingwe chotchedwa 12/3 chili ndi mafayilo 12 omwe ali ndi waya.
Kuphatikiza pa mawaya osakanikirana, makina ambiri a NM amakhalanso ndi waya wonyamulira. Dothi la nthaka silinatchulidwe mu nambala yolembedwa koma kawirikawiri limatchulidwa kuti "G," "w / G," kapena "ndi Pansi." Mwachitsanzo, "12-2 PAMBIRI" amatanthauza kuti chingwecho chili ndi mawaya awiri omwe ali ndi zingwe komanso waya wosakanizika.
Pomalizira, zingwe zimaphatikizapo dzina la wopanga ndi mlingo wopitirira mphamvu, womwe ndi 600 volts-bwino pamwamba pa 240 volts omwe ali ofanana ndi magetsi a kunyumba.
Kufunika kwa Kukula kwa waya
Waya kukula kwake kumagwirizana ndi kukula kwa chitsulo chowongolera waya, kupatulapo kusungunula kulikonse. Nkofunika chifukwa kukula (pamodzi ndi zipangizo zamagetsi ndi zinthu zina zingapo) kumagwiritsa ntchito kuchuluka kwa magetsi komwe waya akutha. Waya mawonekedwe amawerengedwa ndi American Wire Gauge (AWG) dongosolo. Zing'onozing'ono za AWG zimakhala zazikulu zowonjezera, ndipo pakuyankhula, zowonjezereka zitsulo zingathe kunyamula popanda kutentha kwambiri.
Kutha kwanyamulira pakali pano kumayikidwa mu amperes kapena amps. Mpiringidzo mu dera lirilonse liyenera kukhala ndi mayendedwe amphamvu pa zipangizo zam'dera komanso woyenda dera akuteteza dera. Mwachitsanzo, waya wa AWG amawerengera ma ampita 15 ndipo amayenera kugwiritsa ntchito maulendo amphamvu oposa 15 amphamvu. Zina zambiri zamtundu wa waya ndi ziwerengero zawo zamkati zimaphatikizapo:
- 12 AWG-20 amps
- 10 AWG-30 amps
- 8 AWG-40 amps
- 6 AWG-55 amps