Zaɓin mai watsewar kewayawa

1.a cikin da'irar hasken wuta don rage farashin aikin, yawanci zaɓi 1P mai fashewa, buƙatar kula da madaidaicin kewayawa dole ne ya sami aikin balaguro, dole ne ya yanke wutar lantarki mafi girma;

2. Ƙaddamar da wutar lantarki don hana layin rayuwa kuma an haɗa layin sifili zuwa haɗari (lokacin da layin layi da sifili ya haɗa zuwa 1P cire haɗin layin sifili kuma bai cire haɗin layin ba), ana iya amfani dashi. 1P+N gajeriyar na'urar kewayawa, wanda galibi ana faɗin DPN circuit breaker.

3. Don mahallin mahalli na girman girman girman, akwai bambanci tsakanin 1P da 1P + N, tsohon yana da ƙarfin karya mafi girma fiye da na ƙarshe a ƙarƙashin yanayin gajeriyar haɗari.Sabili da haka, ana ba da shawarar yin amfani da na'ura mai mahimmanci na 2P don mafi mahimmancin kewayawa da kulawa akai-akai da kuma aiki a cikin aikin, amma farashin ya fi girma.

Bugu da ƙari: 1P, 2P don lokaci-ɗaya, 3P, 4P don matakai uku.

Lokacin da babu kariya, 1P, 3P kawai za a iya amfani da shi;Lokacin da ƙasa mai kariya ce, yana da kyau a yi amfani da 2P, 4P.

1P + N: ana shigar da mai tsaro ne kawai akan layin lokaci, kuma an katse layin lokaci a lokaci guda lokacin da aka ɗauki matakin.