Imuphi usayizi wocingo wama-amps angama-30 amamitha angama-200 (amathiphu namasu)
Amathuluzi namathiphu

Imuphi usayizi wocingo wama-amps angama-30 amamitha angama-200 (amathiphu namasu)

19.02.2023 /

Kungakhathaliseki ukuthi ufaka intambo yokunweba noma ipayipi elingaphansi komhlaba, ukwenza okufanele nokukhetha kosayizi wentambo ofanele kuyadingeka. Izintambo ezinezintambo zikagesi ezingalingani kahle zingaholela emiphumeleni eyinhlekelele. Ngezinye izikhathi lokhu kungaholela emlilweni, ukulimala kwemishini kanye nezintambo ezincibilikayo. Ngakho-ke ngakho konke lokhu engqondweni, ngihlela ukufundisa ukuthi yiluphi usayizi wocingo oludingekayo kuma-amps angu-30 ezinyaweni ze-200.

Ngokuvamile, ukuze usebenzise isifunda esingu-30 amp ngaphezu kwamamitha angu-200, uzodinga izintambo ezingu-4 AWG; Kuyinketho ekahle yephrojekthi yakho yezintambo zikagesi. Uma usebenzisa i-120V, lokhu kuzokunika ukwehla kwamandla kagesi okungu-2.55%. Lokhu kwehla kwamandla kagesi kungaphansi kokwehla kwamandla kagesi okunconyiwe ngo-3%.

Ukwehla kwamandla kagesi okuvumelekile

Uma usebenzisa ukufakwa kwamandla kagesi aphansi futhi lokhu kuxhumana kuvela ohlelweni lokusabalalisa umphakathi, udinga ukugcina ukwehla kwamandla kagesi kungaphansi kuka-3% ukuze kukhanye futhi kube ngaphansi kuka-5% ngezinye izinjongo. Ukweqa lawa manani kungaholela emiphumeleni eyingozi kakhulu. Ngakho khumbula ukugcina ukwehla kwamandla kagesi endaweni ephephile.

Usayizi wentambo onconyiwe wokugijima okungu-30A, 200ft

Kunoma iyiphi iphrojekthi yokufaka izintambo zikagesi, kufanele ukhethe izintambo ngokusekelwe ezidingweni zakho zesikhathi eside. Ngakho-ke, uhlobo lwezinto zocingo lubalulekile. Isibonelo, uma uthenga, kufanele ukhethe ezintanjeni zethusi ne-aluminium.

Uma ukhetha ithusi, i-4 AWG izokwanela intambo yokunweba engu-30 amp engamafidi angu-200 ubude. Ngakolunye uhlangothi, i-300 Kcmil aluminium wire izokwenza ubuqili.

Bese ukhumbula: Ngokuya ngokulungiselelwa kwe-amplifier, usayizi wentambo ungashintsha.

I-aluminium noma ithusi?

Kokubili i-aluminium ne-copper zingamakhonduki amahle kakhulu. Kodwa yimuphi ongcono kuphrojekthi yezintambo ezingaphansi komhlaba? (1)

Kuncike ezintweni eziningi. Ngakho nanka amaqiniso angakusiza wenze isinqumo sakho.

Amandla aqinile

Kunoma iyiphi intambo engaphansi komhlaba, amandla aphezulu okuqina abalulekile. Lokhu kuqinisekisa ukuthi ucingo alunqamuki kalula. I-Copper inamandla aqine kakhulu e-aluminium. I-Copper inamandla angama-40% aphezulu wokudonsa uma kuqhathaniswa ne-aluminium. Ngale ndlela, uzokwazi ukuzulazula izintambo ngaphandle kokungabaza.

Ukunwetshwa kwe-thermal

Ukunwetshwa kokushisa kubhekisela ekhonweni lensimbi lokunwebeka lapho leyo nsimbi ibhekene nokushisa. Ngokuvamile izintambo zethusi azikhuli kangako. Uma kuqhathaniswa ne-aluminium, inani le-thermal yokwandisa yethusi liphansi.

Ukuqhuba

Uma ungajwayelene namagama okuqhuba, nansi incazelo elula. Lapho ukushisa noma amandla kagesi edlula kwinto ethile, ihlangabezana nokuphikiswa okuthile kuleyo nto. I-Conductivity ikala lokhu kumelana. Ngokuphathelene ne-conductivity kagesi, ithusi liyisinqumo esingcono kakhulu kune-aluminium.

Amaqiniso amathathu angenhla angaphezulu kokwanele ukunquma ukuthi yikuphi okungcono, i-aluminium noma ithusi. Ngaphandle kokungabaza, izintambo zethusi ziyindlela engcono kakhulu yezintambo zikagesi ezingaphansi komhlaba.

Ithiphu: Izintambo zesiliva zingamakhondukta angcono kakhulu. Kodwa, kubiza kakhulu kunezintambo zethusi.

I-voltage yehla ngocingo lwethusi olu-4 AWG

Ku-120 V, 30 amps namafithi angu-200 wokugijima, intambo engu-4 AWG ibonisa ukwehla kwamandla kagesi okungu-3.065 V. Njengephesenti, leli nani lingu-2.55%. Ngakho-ke, ukwehla kwamandla kagesi kusendaweni ephephile.  

Ithiphu: Ku-240V ukwehla kwamandla kagesi kungu-1.28%.

Ngingakwazi ukusebenzisa izintambo ezi-3 ze-AWG kuma-amps angu-30 ngaphezu kwamamitha angu-200?

Yebo, ungasebenzisa intambo yethusi engu-3 AWG yama-amps angu-30 namafithi angu-200. Kodwa ngokombono wokuqhuba, i-4 AWG wire ilungile. Izintambo ezi-3 ze-AWG zijiyile kunezintambo ezingu-4 AWG. Ngakho-ke, izintambo ezi-3 ze-AWG zizodala ukumelana nocingo olu-4 AWG. Lokhu kusho ukuguquguquka okuncane kwezintambo ezi-4 AWG. Intambo engu-3 ye-AWG iwumkhawulo wocingo owububanzi ongawusebenzisa kuma-amps angu-30 ngaphezu kwamafithi angu-200.

Ingakanani ibanga eliphezulu lesekethe engu-30 amp enezintambo eziyi-10 geji?

Uma sikhuluma ngentambo yokwelulwa kwezinyawo ezingama-200, intambo yethusi engu-10 AWG ingesinye sezihloko eziyimpikiswano kakhulu ku-inthanethi. Abantu abaningi babheka izintambo ezingu-10 ze-AWG njengobukhulu obuncane bentambo yokwelulwa kwezinyawo ezingu-200. Yiqiniso lokhu? Hhayi-ke, sizothola ngezansi.

Ukuze 240V

Uma intambo engu-10 AWG ihamba ngamamitha angu-200 kuma-amps angu-30 wamanje kagesi, ukwehla kwamandla kagesi kungu-5.14%.

Ibanga eliphakeme = amafidi angu-115 (kucatshangwa ukuthi ukwehla kwamandla kagesi ngaphansi kuka-3%).

Ukuze 120V

Uma intambo engu-10 AWG ihamba ngamamitha angu-200 kuma-amps angu-30 wamanje kagesi, ukwehla kwamandla kagesi kungu-10.27%.

Ibanga eliphakeme = amafidi angu-57 (kucatshangwa ukuthi ukwehla kwamandla kagesi ngaphansi kuka-3%).

Uma uhlela ukuyiqhuba kuma-amps angu-30, i-10 gauge wire izosebenza ngaphansi kwamafidi angu-100.. Kodwa leli banga lingahluka ngokuya nge-voltage yokuqala. Uzothola umbono omuhle ngemuva kokusebenzisa isibali sokudonsa amandla kagesi. Lena indlela elula yokuthola ibanga elifanele.

Bese ukhumbula: Kodwa-ke, intambo engu-10 AWG iyintambo encane yobubanzi engasetshenziselwa ama-amps angu-30. Okubi kuphela ukuthi izintambo eziyi-10 ze-AWG azikwazi ukugijima amafidi angama-200.

Imiphumela emibi Ukusebenzisa intambo encane

Uma ucingo lukhudlwana, lukwazi ukulubamba lwamanje. Nokho, lezi zintambo ezinkulu zingabiza kakhulu. Ngenxa yalokhu, abantu abaningi bazama ukwenza umsebenzi ngokusebenzisa ucingo oluncane. Kodwa abayiqondi imiphumela yesenzo esinjalo. Isibonelo, izintambo ezincane zobubanzi ziyahluleka ngaphansi kwemithwalo esindayo. Lokhu kwehluleka kuzozibonakalisa ngezindlela eziningi. Ngezansi sizoxoxa ngale miphumela engemihle.

Ukuqubuka komlilo

Intambo encane enephutha ingabangela umlilo kagesi. Uma izinto zingalawuleki, umlilo ungacekela phansi sonke isakhiwo. Ngisho nama-circuit breaker angase angakwazi ukumisa ukugcwala okunjalo. Kwezinye izimo, ungase uzwe ngisho nokuqhuma. Ngakho-ke, imililo iyisimo esibi kakhulu sezintambo ezincane.

Iyancibilika

Umthwalo osindayo ungadala ukushisa okuningi. Leli nani lokushisa lingase libe liningi kakhulu ezintanjeni ezincane nama-capacitor. Ekugcineni, izintambo zingase zincibilike. Akukhona lokho kuphela, kodwa lokhu kuncibilika kungathinta abangaphakathi be-electronics. Ezimweni eziningi, le mishini ingalimala ngendlela engenakulungiseka.

Imishini eyonakele

Njengoba kushiwo esigabeni esandulele, ukuncibilika kungaba enye yezimbangela zokulimala kwezinto zikagesi. Kodwa lesi akusona isizathu kuphela. Isibonelo, wonke amadivayisi anikwe amandla kusuka kumjikelezo we-30-amp. Ngakho-ke, noma nini lapho izinto zikagesi zingawutholi ugesi owanele, zingase zishe ngokuphelele noma zife kancane.

Ukuwa kwe-Voltage

Noma nini lapho ugijima ibanga elingamamitha angu-200, ukwehla kwamandla kagesi kufanele kube ngaphansi kuka-3% ekukhanyeni kanye no-5% ngezinye izinjongo. Uma ucingo olukhethiwe lungakwazi ukusekela lezi zilungiselelo, lungalimaza isekethe yonke. Ngakho uma usebenzisa intambo encane, ingase idlule ukwehla kwamandla kagesi okunconyiwe.

Ukunciphisa

Izintambo zethusi zingamelana nokuguga nokudabuka kunezintambo ze-aluminium. Lokhu akusho ukuthi izintambo zethusi azithinteki. Njengezintambo ze-aluminium, izintambo zethusi zizoguga uma zingaphansi kokucindezeleka ngokweqile.

Yimuphi usayizi wezintambo ongcono kakhulu kuma-amps angu-30 ngaphezu kwamamitha angu-200?

Yize intambo engu-10 AWG iyindlela efanelekile yesekethe engu-30 amp, ayikwazi ukusebenza ngaphezu kwamamitha angama-200. Ngakolunye uhlangothi, i-3 AWG wire ishubile. Lokhu kusho ukumelana okwengeziwe. Ngakho ukukhetha okusobala yi-4 AWG wire yethusi.

Ingabe kuphephile ukusebenzisa intambo enwetshiwe ukusuka endlini yami ukuya eshede lami?

Uma uhlela ukusebenzisa uxhumano kusuka endlini yakho kuya eshede lakho, unezinketho ezimbili. Ungakwazi ukwelula intambo yokwelula, noma ungangcwaba ucingo. Kunoma yikuphi, uzoqedela umsebenzi. Kodwa, ngombono wokuphepha, kungcono ukungcwaba ucingo.

Intambo yokunweba ayisona isisombululo esihlala njalo sezintambo zangaphandle. Lena indlela enhle kakhulu yezimo eziphuthumayo. Kodwa lena akuyona inketho ephephe kunazo zonke. Nazi ezinye izinkinga ongahlangabezana nazo uma usebenzisa intambo yokunweba yangaphandle.

  • Intambo yokwelulwa ingahle yonakele.
  • Intambo enwetshiwe engavikelekile ingaba yingozi kwabanye.
  • Ukuxhuma intambo yokunweba kumadivayisi amaningi akuwona umsebenzi omnandi.

Ngakho, ngokucabangela izici ezingenhla, kuphephile ukungcwaba ucingo. Ukuze wenze lokhu uzodinga izintambo ze-conduit kanye ne-UF. I-UF imele i-underground feeder. Lezi zintambo zenzelwe ukusetshenziswa ngaphandle ngokukhethekile.

Ukufingqa

Ukugijima izinyawo ezingu-200 zezintambo zikagesi kuma-amps angu-30 kungaba inselele kuye ngokukhethwa nokusebenza. Isibonelo, kufanele ukhethe kusuka ethusi ne-aluminium. Bese kuba usayizi wentambo olungile. Ekugcineni, indlela ye-wiring. Intambo yokunweba noma amapayipi?

Ukuze uphumelele ngephrojekthi yezintambo zangaphandle, kufanele wenze izinqumo ezifanele. Uma kungenjalo uzogcina unemishini eqhumile noma eyonakele.

Bheka ezinye zezihloko zethu ngezansi.

  • Indlela yokuhlola i-low voltage transformer
  • Indlela yokuhlola i-breaker circuit nge-multimeter
  • Lapho ungathola khona ucingo oluwugqinsi lwethusi lwezicucu

Izincomo

(1) i-aluminium - https://www.britannica.com/science/aluminium

(2) ithusi - https://www.britannica.com/science/copper

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