Dab tsi yog qhov sib txawv ntawm N-ncej thiab L-ncej ntawm lub ntsaws

Muaj ntau qhov sib txawv pom tseeb:

Cov ncej L ntawm cov ntsaws yog qhov xaim hlau, 220V rau hauv av (Nyiv thiab Asmeskas yog 110V txawv teb chaws)

N-ncej ntawm lub ntsaws yog txoj kab nruab nrab (feem ntau grounded), nrog qhov voltage ntawm 0 V mus rau hauv av

Hauv kev siv, cov ntaub thaiv yuav tsum ua kom nruj.

Txwv tsis pub, xau hluav taws xob thiab hluav taws xob hluav taws xob zoo li yuav tshwm sim (l-ncej ntawm ntau cov khoom siv tau ua kom muaj zog rwb thaiv tsev, N-ncej rwb thaiv tsev yog qhov dav lossis txuas ncaj qha rau cov khoom siv plhaub).

Qee qhov khoom siv yuav tsum nruj heev. Nws tuaj yeem tsis tuaj yeem ua haujlwm yog tias txuas nrog tsis raug lossis txawm hlawv.