Ukuvuza komhlaba umsinga ofinyelela phansi ngendlela engahlosiwe. Kunezigaba ezimbili: ukuvuza komhlabathi okungahlosiwe okubangelwa ukugqunywa noma ukwehluleka kwemishini kanye nokuvuza komhlaba ngamabomu okubangelwa indlela impahla eklanywe ngayo. Ukuvuza “kwedizayini” kungase kubonakale kuxakile, kodwa ngezinye izikhathi akunakugwemeka-ngokwesibonelo, imishini ye-IT ivamise ukukhiqiza ukuvuza okuthile ngisho noma isebenza kahle.
Kungakhathaleki ukuthi ukuvuza kuyini, kufanele kuvinjwe ukuthi kubangele ukushaqeka kukagesi. Lokhu kuvame ukwenziwa kusetshenziswa i-RCD (idivayisi yokuvikela ukuvuza) noma i-RCBO (i-circuit breaker evuzayo enokuvikela okudlulele). Bakala i-current ku-conductor yolayini bese beyiqhathanisa neyamanje ku-conductor emaphakathi. Uma umehluko udlula isilinganiso se-mA se-RCD noma i-RCBO, izohamba.
Ezimweni eziningi, ukuvuza kuzosebenza njengoba kulindelekile, kodwa ngezinye izikhathi i-RCD noma i-RCBO izoqhubeka nokuhamba ngaphandle kwesizathu-lolu "luhambo olucasulayo". Indlela engcono kakhulu yokuxazulula le nkinga ukusebenzisa imitha yokucindezela ukuvuza, njenge-Megger DCM305E. Lokhu kuboshelwe eduze kwentambo kanye nekhondatha engathathi hlangothi (kodwa hhayi i-conductor eyisivikelo!), futhi ikala ukuvuza kwamanje komhlaba.
Ukuze unqume ukuthi iyiphi isekethi ebangele uhambo olungelona iqiniso, vala wonke ama-MCB kuyunithi edla amandla bese ubeka isibambiso sokuvuza phansi eduze kwekhebula lamandla. Vula isekethe ngayinye ngokulandelana. Uma kubangela ukwanda okukhulu kokuvuza, lokhu kungase kube isifunda esiyinkinga. Isinyathelo esilandelayo ukunquma ukuthi ukuvuza bekungamabomu yini. Uma kunjalo, uhlobo oluthile lokusabalalisa umthwalo noma ukuhlukaniswa kwesifunda kuyadingeka. Uma kuwukuvuza okungahlosiwe—umphumela wokwehluleka—ukwehluleka kumelwe kutholakale futhi kulungiswe.
Ungakhohlwa ukuthi inkinga ingase ibe i-RCD engalungile noma i-RCBO. Ukuze uhlole, yenza ukuhlolwa kwerempu ye-RCD. Esimeni sedivayisi engu-30 mA-isilinganiso esivame kakhulu-kufanele sihambe phakathi kuka-24 no-28 mA. Uma inyakaza ngomsinga ophansi, kungase kudingeke ukuthi ishintshwe.