Guhuza insingani intego yubatswe mugupima, kugerageza cyangwa guhuza insinga zumuzunguruko byihuse, hamwe byibuze urusaku, aho itumanaho rya terefone rigoye kugera mukarere cyangwa ridakwiriye guhagarika.Baraboneka mubunini butandukanye, ubwoko bwitumanaho nuburyo bwo guhuza no kubikoresha mugihe cyo kugerageza amashanyarazi birihuta, bikora neza kandi byiringirwa, kuko bitarimo kwambura insinga cyangwa kugoreka.Kwishyiriraho byihuse hamwe no gusukura byibuze hamwe nibikorwa byizewe byatumye uhuza insulasiyo itobora ikunzwe mubikorwa byinshi.Urugero rwo gupima amashanyarazi harimo;insinga zikoresha ibinyabiziga, gufunga ibikoresho bya elegitoronike, gutabaza, umuyoboro ninsinga za terefone.Imiyoboro ntoya ya voltage ninziza yo guhuza insulasiyo.