Ukuvuza komhlabathi kungumthombo wamanzi ofika phansi ngendlela engahlosiwe. Kunezinhlobo ezimbili: ukuvuza komhlabathi okungahlosiwe okubangelwa ukufakelwa noma ukwehluleka kwemishini kanye nokuvuza komhlabathi okuhlosiwe okubangelwa indlela imishini eklanywe ngayo. Ukuvuza "komklamo" kungase kubonakale kungavamile, kodwa ngezinye izikhathi akunakugwenywa - isibonelo, imishini ye-IT ivame ukudala ukuvuza okuthile noma ngabe isebenza kahle.
Kungakhathaliseki ukuthi ukuvuza kuvelaphi, kumele kuvinjelwe ekubangeleni ukushaqeka kukagesi. Lokhu kuvame ukwenziwa ngokusebenzisa i-RCD (idivayisi yokuvikela ukuvuza) noma i-RCBO (i-leakage circuit breaker enokuvikelwa kwe-overcurrent). Balinganisa ugesi ku-line conductor bese bewuqhathanisa nogesi ku-neutral conductor. Uma umehluko udlula isilinganiso se-mA se-RCD noma i-RCBO, uzokhubeka.
Ezimweni eziningi, ukuvuza kuzosebenza njengoba kulindelekile, kodwa ngezinye izikhathi i-RCD noma i-RCBO izoqhubeka nokukhubeka ngaphandle kwesizathu - lokhu "kuwuhambo olucasulayo". Indlela engcono kakhulu yokuxazulula le nkinga ukusebenzisa imitha yokubamba ukuvuza, njenge-Megger DCM305E. Lokhu kuboshwe nxazonke kwentambo kanye ne-conductor engathathi hlangothi (kodwa hhayi i-conductor evikelayo!), futhi ilinganisa ugesi wokuvuza komhlabathi.
Ukuze uthole ukuthi iyiphi isekethe ebangele ukukhubeka okungamanga, cisha wonke ama-MCB kuyunithi esebenzisa ugesi bese ubeka i-ground leaking clamp ezungeze ikhebula likagesi. Vula isekethe ngayinye ngokulandelana. Uma kubangela ukwanda okukhulu kokuvuza, lokhu kungenzeka kube yisekethe eyinkinga. Isinyathelo esilandelayo ukuthola ukuthi ukuvuza bekuhlosiwe yini. Uma kunjalo, kudingeka uhlobo oluthile lokusabalala komthwalo noma ukuhlukaniswa kwesekethe. Uma kungukuvuza okungahlosiwe—umphumela wokwehluleka—ukwehluleka kumele kutholakale futhi kulungiswe.
Ungakhohlwa ukuthi inkinga ingaba yi-RCD noma i-RCBO enephutha. Ukuze uhlole, yenza ukuhlolwa kwe-RCD ramp. Uma idivayisi engu-30 mA - isilinganiso esivame kakhulu - kufanele ikhubeke phakathi kuka-24 no-28 mA. Uma ikhubeka ngogesi ophansi, kungadingeka ukuthi ishintshwe.