Kuswa kwa dera ndimasinthasintha otetezera omwe amateteza maulendo onse a magetsi m'nyumba mwanu . Pali mitundu iwiri ya ophwanya malamulo: osakaniza limodzi ndi awiri. Mphuphu yamodzi yokha imaikidwa pa volts 120 ndi 15 kapena 20 amps. Amayendetsa magetsi ndi maulendo ozungulira, komanso maulendo ena ogwiritsira ntchito, m'nyumba. Mphunguyi imakhala yopapatiza ndipo imakhala yokhazikika mubokosi la nyumba .
Komabe, zigawo ziwirizi zimakhala zovundikira kwa amtundu 20 mpaka 60 ndipo zimapatsa mphamvu 240-volt ku zipangizo zazikulu, monga zowuma magetsi ndi mzere. Iwo ndi "ophwanyika pawiri" omwe amanyamula mabokosi awiri mu bokosi lochotsamo ndipo amakhala ndi mawotchi omwe amatha kupitirira pafupipafupi.
Zomwe Zimasokoneza Anthu Ambiri
Mkati mwa bokosi lanu lopumula kapena gulu lalikulu la utumiki, muli mbale zolowa zowonjezereka, zotchedwa "hot" basi. Chombo chilichonse, kapena malo ogwirizana, pamapiringidzo, amakhala ndi magetsi 120 magetsi. Pamene osasuntha osakanikirana, amalowa mu mtengo umodzi kuti adzalandile 120 volts. Mitundu ikuluikulu iwiri imagwera pa mitengo iwiri yokwana 240 volts. Mipiringidzo ya dera yomwe imagwirizanitsa ndi mizere iwiri yamapira imakhala ndi mawaya awiri "otentha". Zonsezi zimagwirizanitsa ndi odwala pamtunda ndipo zimatetezedwa ndi theka la wosweka. Ngati vuto kapena vuto lina likupezeka pa imodzi mwa mawayawa, theka la womwazayo lidzayenda.
Izi zimapangitsa theka lina la wopumula kuti liziyenda panthawi imodzimodzi chifukwa magawo awiriwo amangirizidwa pamodzi ndi barre imodzi yokha. Izi zimachotsa kugwirizanitsa kwa mitengo yonse ya basi, kutseka dera lonse kamodzi.
Oyendetsa Madera Awiri
Ngati mutsegula chitseko ku gawo lanu lamtunduwu ndikuwona chipinda chomwe chili chokhalira limodzi koma ali ndi zing'onozing'ono ziwiri zosinthira, kaya mzere kapena mbali imodzi, mwina ndi "wosuta".
Amatchedwanso tandem, slimline kapena twin breaker, wowonongeka ndi phokoso lachiwiri limene limatenga mphindi imodzi yokha. Mosiyana ndi dalaivala lopanda maulendo awiri, limene limagwira dera limodzi lopanda 240, loyendetsa limatumiza maulendo awiri a volt-volt; sungagwiritsidwe ntchito kupatsa 240 volts ku dera limodzi. Mtundu wosiyana-siyana wokwera pawiri ndi "quad breaker," womwe umatumikira maulendo awiri a volt 240 koma ndi wofanana wofanana ndi ophwanya mizere.
Chosokoneza chiwonetsero si umboni wakuti wamagetsi anu akunyenga-ndizo dzina lachidziwitso-koma othawa awa ayenera kukhazikitsidwa bwino kuti akhale ovomerezeka ndi otetezeka. Choyamba, gululo liyenera kupangidwa kuti livomereze anthu osokoneza, ndipo kachiwiri, oyendetsa ayenera kuyimilira pamalo oyenera. Pazitsulo zambiri, zokhazokha zokha ndizoyenera kuti aziwombera. Oyendetsa nthawi zambiri amagwiritsidwa ntchito pamene malo akuphatikizana akusowa ndipo wina akufuna kuwonjezera maulendo awiri a volt-volt kapena kuti apange dera latsopano la 240-volt kwinakwake pamphindi. Ngati mukufuna kudziŵa ngati gulu lanu likhoza kulandira okonda, funsani magetsi. Mwa njira, kusintha wosokoneza wobwereza kuti agwirizane kumene sikuli kwabodza ndikunama, ndipo ndizoopsa kwambiri.