Njengezinto zokusebenza eziyinhloko emkhakheni wokulinganisa amandla, ububanzi bokulinganisa imitha kagesi bunquma ngokuqondile izimo zayo ezisebenzayo nokuthembeka kwedatha. Ukuchaza ngokwesayensi amapharamitha obubanzi bemitha kubalulekile ekuqinisekiseni ukulinganiswa kwamandla okunembile, ukuhambisana kwesistimu, nokuphepha komsebenzisi.
Ngokombono wezobuchwepheshe, ibanga lokulinganisa imitha kagesi ngokuvamile lakhiwa izinkomba ezimbili ezibalulekile: "isilinganiso samanje" kanye "nomthamo omkhulu wamanje." Ngemitha yamandla kagesi yesigaba esisodwa esivamile, isibonelo, isilinganiso samanje (isb, 5A, 10A) simelela inani lesisekelo-lokusebenza okuzinzile kwesikhathi eside ngaphansi kwezimo zokusebenza ezijwayelekile, kuyilapho umkhawulo wamanje (isb, 60A, 80A) umele ubude obufushane bemitha{11}ubukhulu bokubekezelela umthwalo. Ukweqa leli nani kungase kubangele ukushisisa kwengxenye noma kukhuphule amaphutha okulinganisa. Kumamitha{14}ezigaba ezintathu kagesi wezimboni, ububanzi bokulinganisa kufanele buhambisane nezidingo zokulayisha eziphakeme nakakhulu. Amanye amamodeli asekela ububanzi bokulinganisa obungu-0.1A ukuya ku-200A ngokunemba kweleveli engu-0.5S{19}}, futhi anganwetshwa aze afike kububanzi be-kiloampere nge-shunt yangaphandle.
Izidingo zobubanzi bemitha ziyahlukahluka kakhulu kuzo zonke izimo zohlelo lokusebenza ezihlukene. Ezimeni zokusebenzisa ugesi ezindlini, amamitha ngokuvamile avala umthamo wasendlini ophelele osuka ku-3kW kuya ku-10kW (ohambisana namaza acishe abe ngu-13A kuya ku-45A). Lokhu akuhlangabezani nezidingo zezinto zikagesi zansuku zonke kuphela, kodwa futhi kuvumela ukuxhunywa{6}}kwezisetshenziswa zamandla aphezulu njengama-air conditioner nama-heater amanzi kagesi. Izimo zezimboni nezentengiso zidinga ububanzi obuguquguqukayo obuphezulu. Isibonelo, amagumbi esikhungo sedatha angase afakwe amamitha ahlakaniphile anobubanzi obungu-200A noma ngaphezulu ukuze kuqashwe umthwalo osheshayo wamaqoqo weseva. Kugridi yamandla avuselelekayo{11}}amasistimu axhunyiwe, amamitha kufanele futhi asekele ukukalwa kwe-bidirectional (isizukulwane nokusetshenziswa), futhi idizayini yobubanzi kufanele ithwebule ngokunembile kokubili imisinga eya phambili nangemuva.
Kubalulekile ukuqaphela ukuthi ukukhetha ibanga lamamitha akusho ukuthi kungcono. Amaza okulinganisa aphezulu kakhulu anganciphisa ukuzwela kwemitha ngesikhathi somthwalo ophansi (isibonelo, imitha engu-100A ingase ibe nephutha elikhulayo lapho ikala u-5A), kuyilapho ububanzi obuphansi kakhulu bunganyusa ingcuphe yokulayishwa ngokweqile. I-smart metre yesimanje ibhalansisa lokhu kudonsa kanzima{4}}ngobuchwepheshe bokushintsha okuzenzakalelayo obuhlukahlukene (njengamadizayini wesilinganiso esibanzi sokwehla). Amamojula okuxhumana angaphinda alayishe amaphrofayili ngesikhathi sangempela, asize abasebenzisi ukuthi bathuthukise ukusebenzisa kwabo ugesi. Ukulinganisa ububanzi bokulinganisa amamitha kuyimfuneko eqinile yamazinga obuchwepheshe kanye nengxenye ebalulekile ekuqinisekiseni ukuphathwa kahle kwamandla. Njengoba izinhlelo zikagesi ziba ngobuhlakani kakhulu, ukujwayela okunembayo kwebanga lamamitha kuzoqhubeka nokuba yinto esemqoka embonini.