第一種情況家裏安裝有合格有效的漏電保護開關：

 

xianzaidejiatingpeidianxiangneidouhuianzhuangyouloudianbaohukaiguan，jiushiweilefangzhidangxianluzhonghuozheshijiayongdianchuxianloudianshinenggoujishixunsudeqieduandianyuan，congerbimianloudiandianliukenengduirentizaochengdeshanghai，tadezuoyongyuanlijiushijiancedianluzhongloudianbaohukaiguansuokongzhidehuiludedianliushiliangheshifouweiling，yejiushihuoxianzhongliuchudedianliuhelingxianzhongliuhuilaidedianliushifouxiangdeng，ruguobuxiangdengjiushiyouloudian，jiuhuitiaozha；

 

dangwomenjiadepeidianxiangmeianzhuanglehegeyouxiaodeloudianbaohukaiguanshi，ruguolingxianhedixianchuxianleduanjie，cishihuichuxianzaizhegekaiguandexiakoukairenhedianqidouhuitiaozha
，huozheshishiyongdianqishihebushangzhadeqingkuang

，suoyidangwomenfaxianshiyongdianqishiloudianbaohukaiguanheshangjiutiaoerqiecishierqieloudianbaohukaiguanshangdefuweianniutuchudehua，najibenshangkeyiduandingshilingxianhuozheshidixianloudian；

 

然後我們把配電箱內的接地排上的這根地線拆下來懸空防止，此時再合上閘打開家用電器
，觀察是否還跳閘；如果仍然跳閘就說明是零線漏電
，如果此時不再跳閘那麼就說明是零線和地線短接了；此時我們要抓緊檢查線路，不要再使用了。

 

第二種情況是家裏沒有安裝有合格有效的漏電保護開關：

 

如(ru)果(guo)我(wo)們(men)家(jia)裏(li)沒(mei)有(you)安(an)裝(zhuang)漏(lou)電(dian)保(bao)護(hu)開(kai)關(guan)或(huo)者(zhe)是(shi)漏(lou)電(dian)保(bao)護(hu)開(kai)關(guan)是(shi)壞(huai)的(de)，此(ci)時(shi)也(ye)不(bu)會(hui)跳(tiao)閘(zha)，那(na)麼(me)這(zhe)個(ge)時(shi)候(hou)我(wo)們(men)就(jiu)需(xu)要(yao)借(jie)助(zhu)工(gong)具(ju)來(lai)檢(jian)測(ce)了(le)，最(zui)常(chang)用(yong)也(ye)最(zui)方(fang)便(bian)的(de)電(dian)工(gong)工(gong)具(ju)那(na)就(jiu)是(shi)萬(wan)用(yong)表(biao)了(le)
，我(wo)們(men)就(jiu)使(shi)用(yong)萬(wan)用(yong)表(biao)來(lai)檢(jian)測(ce)一(yi)下(xia)；

 

萬wan用yong表biao檢jian測ce判pan斷duan零ling線xian和he地di線xian是shi否fou短duan接jie了le，我wo們men要yao利li用yong要yao用yong表biao的de蜂feng鳴ming檔dang也ye就jiu是shi發fa光guang二er極ji管guan那na一yi檔dang
，把ba黑hei色se的de表biao筆bi插cha在zai黑hei色se的de那na個ge插cha孔kong即ji公gong共gong端duanCOM孔，把紅色的表筆插在紅色的插孔的電壓電阻孔（也就是VΩ孔），然後調零以後就可以準備測試了；

 

ceshiqianyaoduankaipeidianxiangneiloudianbaohukaiguandedianyuan，jiangloudianbaohukaiguanxiakoudelingxianchaixialailuchutongxin，zaijianggaihuiludedixiancongpeidianxiangneidedipaishangchaixialai
，luchutongxin
；

 

測(ce)試(shi)時(shi)首(shou)先(xian)是(shi)打(da)開(kai)萬(wan)用(yong)表(biao)，然(ran)後(hou)把(ba)萬(wan)用(yong)表(biao)的(de)中(zhong)間(jian)的(de)那(na)個(ge)旋(xuan)鈕(niu)旋(xuan)轉(zhuan)至(zhi)蜂(feng)鳴(ming)檔(dang)，用(yong)黑(hei)色(se)的(de)表(biao)針(zhen)接(jie)觸(chu)零(ling)線(xian)


，用(yong)紅(hong)色(se)的(de)表(biao)針(zhen)接(jie)觸(chu)地(di)線(xian)，如(ru)果(guo)此(ci)時(shi)萬(wan)用(yong)表(biao)發(fa)出(chu)蜂(feng)鳴(ming)聲(sheng)，那(na)麼(me)說(shuo)明(ming)零(ling)線(xian)和(he)地(di)線(xian)通(tong)路(lu)即(ji)零(ling)線(xian)和(he)地(di)線(xian)短(duan)接(jie)了(le)；如果此時萬用表沒有發出蜂鳴聲，說明零線和地線是斷路
，也就是零線和地線沒有短接。