Video: Kuv yuav siv cov hlau loj npaum li cas rau 200 amp kev pabcuam?
2024 Tus sau: Taylor Roberts | [email protected]. Kawg hloov kho: 2023-12-16 00:29
Yog li, rau a 200 - amp kev pabcuam , koj tseem yuav raug tso cai xaiv 4/0 AWG txhuas lossis 2/0 AWG tooj liab, tab sis koj yuav xaiv nws los ntawm 75 degree C kem hauv Rooj 310.15 (B) (16).
Cov neeg kuj nug, qhov loj me me pas nrig yuav tsum muaj rau 200 amp kev pab cuam?
GROUND ROD THIAB CLAMP Qws 5/8 "X 8" # 6 xaim (tooj liab) rau 100 amp kev pabcuam #4 rau 200 amp kev pabcuam , saum rod 4 "txog 6" qis dua qib kawm. Qhov twg a av qws tsis tau raws li 25 OHMS lossis tsawg dua yuav tsum tau hauv NEC ib pliag rod yog xav tau nrog lub rods tsawg kawg yog 6 'sib nrug.
Muaj pes tsawg amps koj tuaj yeem tso rau ntawm 200 amp vaj huam sib luag? Cov tsev tshiab me ntsis (tsim ua ntej xyoo 1960) yuav muaj 60-amp kev pabcuam. Hauv ntau lub tsev tsim tom qab xyoo 1960 (lossis hloov tsev qub), 100 amp ua yog tus txheej txheem kev pabcuam loj. Tab sis hauv cov tsev loj dua, cov kev pabcuam 200-amp tam sim no yog qhov tsawg kawg nkaus, thiab nyob rau qhov kawg kawg, koj yuav pom 400-amp kev pabcuam hluav taws xob teeb tsa.
Hais txog qhov no, kuv xav tau xaim loj npaum li cas rau 225 amp kev pabcuam?
Nrog 4 - 4/0s thiab 4 AWG (qhov xav tau EGC rau 22 5amp feeder) koj yuav tsuas yog kov xwb.
Koj xam cov hlau loj li cas?
Faib qhov voltage khiav los ntawm kab los ntawm koj lub hom phiaj tam sim no. Yog tias, piv txwv li, 120 volts yuav ua rau ntawm kab , thiab koj xav tau 30 amps khiav los ntawm nws: 120 / 30 = 4. Qhov no yog koj lub hom phiaj tiv thaiv, ntsuas hauv ohms. Multiply qhov kab ntev los ntawm nws cov khoom tiv taus.
Pom zoo:
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