Dab tsi yuav tsum tau nkag mus tau yooj yim?

Cov txheej txheem:

Dab tsi yuav tsum tau nkag mus tau yooj yim?
Dab tsi yuav tsum tau nkag mus tau yooj yim?

Video: Dab tsi yuav tsum tau nkag mus tau yooj yim?

Video: Dab tsi yuav tsum tau nkag mus tau yooj yim?
Video: Mark Hais Lus Hmoob EP. 21 TSIS MUAJ DAB TSI TAU LOS YOOJ YOOJ YIM 2024, Hlis ntuj nqeg
Anonim

NEC xav tau ntau yam kom nkag tau yooj yim. Cov khoom siv dhau mus, tshem tawm cov hloov pauv, GFCI hom khoom siv, AFCI hom khoom siv, thiab cov khoom siv nkag rau pem hauv ntej thiab nraub qaum ntawm chav tsev, yog txhua yam khoom yuav tsum tau nkag mus tau yooj yim.

Yuav ua li cas thiaj tsis nkag tau yooj yim?

NEC 2017 tam sim no qhia meej tias yog tias muaj qee yam yuav tsum tau siv lub cuab yeej (tshwj tsis yog tus yuam sij), ces nws tsis suav tias nkag tau yooj yim.

Yuav ua li cas thiaj nkag tau yooj yim?

Teb: Raws li 29 CFR 1910.399, Kev nkag tau yooj yim yog txhais tau tias " muaj peev xwm ncav cuag sai rau kev ua haujlwm, rov ua dua tshiab, lossis tshuaj xyuas, yam tsis tas yuav tsum muaj cov neeg uas npaj txhij nkag mus tau yog qhov yuav tsum tau nce siab. los yog tshem tawm cov teeb meem los yog mus rau qhov chaw nqa khoom nqa tau cov ntaiv, rooj zaum, thiab lwm yam"Txawm li cas los xij, qhov kev txhais no, …

Dab kev hloov pauv puas xav tau kev tshem tawm?

RE: Cov khoom siv hauv zos disconnect hloov kev tshem tawm

Rau kuv qhov kev txiav tawm yuav tsum tau kuaj xyuas thiab hloov kho (kev ua haujlwm ntawm tus kov) thaum muaj zog, nws yuav tsum muaj kev tshem tawm thaum nws ua haujlwm los ntawm ib tus neeg sawv ntsug pem hauv ntej.

Puas hluav taws xob vaj huam sib luag yuav tsum nkag tau yooj yim?

Ib qho ntawm cov ntawv thov feem ntau rau "tau nkag tau yooj yim" tshwm sim hauv 240.24(A), uas NEC hais tias cov khoom siv overcurrent yuav tsum tau nkag mus tau yooj yim thiab nruab kom qhov chaw nruab nrab ntawm kev tuav ntawm kev khiav hauj lwm tuav ntawm lub Hloov lossis Circuit Court breaker, thaum nyob rau hauv nws qhov siab tshaj plaws, yog tsis ntau tshaj 6 feet, 7 …

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