Ndeipi saizi yewaya ye30 amps 300 tsoka?

Kushandisa saizi chaiyo waya yemagetsi yemaseketi kwakakosha kudzivirira njodzi nekudzivirira moto. Izvi zvinokonzerwa nekuti kana simba richifambiswa pamusoro pemarefu marefu kuburikidza nemhangura kana aluminium waya, madonhwe emagetsi anogona kuitika. Naizvozvo, kuti uve nechokwadi chekuchengetedza, unofanirwa kushandisa waya chaiyo ye300 tsoka cheni yako.

Mirira ini ndichikuratidza mamwe maverengero uye ndikudzidzise kuti ndeapi masaizi etambo ekushandisa pakumisikidza ramangwana:

Yakawanda sei waya yaunoda kune makumi matatu amps? (30% NEC kodhi)

Unofanira kushandisa waya inokwanisa kubata kanenge 37.5 amps. Saka #8 AWG waya inokwanisa kubata makumi mashanu amps ndiyo yakanakira waya iyi yebazi.

Ini ndinowanzo shandisa voltage drop calculator kana iyo National Electrical Code (NEC) maitiro eiyo inogamuchirwa 30 amp waya geji.

**Kune 30-amp sekiti, haugone kungoshandisa 30A waya yemagetsi.

Iwe haufanirwe kushandisa #10 AWG 35A waya.Izvi imhaka yekuti iyo yakanyanya kuremerwa yebazi rega rega waya yedunhu i80% yedunhu rechiyero chazvino kune chero mutoro. (NEC 220-2)

MaPros anoidaidza kuti NEC voltage drop drop Calculator ine 80% simba chiyero. Izvi zvinoratidza kuti aya makumi matatu amps haafaniri kumiririra kudarika 30% yehuwandu hwehutambo hwetambo (waya yemhangura kana aluminium).

Heano maitiro ekuona kuti yakawanda sei waya yei simba raunoda kune 30 amp magetsi pani:

Tichifunga nezve 80% NEC inodiwa, ndinotenda kuti 35A #10 AWG haina kukwana. Inenge yakakura zvakakwana ne35A, asi kwete.

Tinoda tambo inokwanisa kubata angangoita 37.5 amps kushandisa 30 amp switch. Saizi inotevera #10 AWG (35A) waya ndiyo saizi ye #8 AWG (50A) waya.

Saka, iyo yakakodzera saizi yewaya ye30 amp circuit breaker i#8 AWG waya, ine chiyero chiripo chemakumi mashanu amps.

Ndeipi saizi yewaya ye30ft 300 amp subpanel?

Iwe unozoda waya inokwanisa kubata kanenge 60 amps.

Saka kushandisa #6 AWG waya inokwanisa kubata 65A ndiyo yakanakisa waya kwauri.

Ndichakudzidzisa maverengero andakaita pazasi.

Kudonha kwemagetsi kunoitika kana magetsi achifambiswa pamusoro pe30 amp copper waya kana 30 amp aruminiyamu waya kure. Voltage inodonha inochengetwa iri pasi pe3% pazasi pemamita gumi, saka haufanirwe kuzvifunga. (10)

Semuenzaniso, iwe unofanirwa kuverenga madonhwe emagetsi pa50, 100, 200, kana 300 tsoka. Mukuwedzera, iwe unogadzirisa kune izvi nekuwedzera simba razvino. Asi zvakadini?

Zvinoenderana neNEC 310-16, ikozvino inofanirwa kuwedzerwa ne20% pamamita zana ega ega kubva pamakumi matatu amp accessory panel.

Zvichitaurwa zviri nyore, izvi zvinoreva kuti unofanira:

• Wedzera zvazvino negumi muzana kune iyo 10 amp waya 30 tsoka kubva pane yekuwedzera.
• Wedzera amperage ne20% ye30 amp gauge tambo 100 tsoka kubva pane sub panel.
• Wedzera zvazvino negumi muzana kune iyo 40 amp waya 30 tsoka kubva pane yekuwedzera.
• Chekupedzisira, wedzera amperage ne60% ye30 amp waya 300 tsoka kubva pane yekuwedzera.

Izvi zvinotevera maitiro ekuona simba re30 amps kubva kure:

Ngatiti iwe unoda subpanel 300 tsoka kubva kune 30 amp mains.

Isu tagara tichiziva kuti zvishoma zve 0 amps yemazuva ano inodiwa pamakumbo 37.5. Kuti utsanangure mamwe mamita 300 kubva pachigadziro chekushandisa, unofanira kuwedzera ikozvino ne 20% pamamita zana ega ega echinhambwe. Saka iwe unofanirwa kuwedzera amperage ne100% kuti uwane inokwana 60 tsoka dzedunhu rako.

Naizvozvo, unoda mutsara unokwanisa kutakura 60 amps ye 30 amp circuit pa 300 tsoka. Nehurombo, #8 AWG waya ikozvino i50A chete.

Mumamiriro ezvinhu aya, sarudza #6 AWG waya ine 65A.

Tarisa zvimwe zvezvinyorwa zvedu pazasi.

• Ndeapi saizi waya ye30 amps 200 tsoka
• Ndeapi saizi waya ye150 amps?
• Kwaungawane gobvu copper wire yezvimedu

kurumbidza

(1) magetsi - https://www.eia.gov/energyexplained/electricity/

(2) mhangura – https://www.livescience.com/29377-copper.html