Amacandelo e-ceramic kwiqondo lokushisa kwegumbi yi-insulator, ngenxa ye-resistivity ephezulu ukuze isetyenziswe kwizixhobo zokugquma, kunye neqondo eliphezulu lokunyibilika, iimpawu eziphezulu zokubilisa, ukwenza izinto zetsimbi kwiqondo lokushisa eliphezulu i-oxidation elula, i-corrosion elula yobuthathaka.Kwaye ngenxa yokuba impahla yemveliso ayinayo imagnethi, ayifuni uthuli, umphezulu akulula ukuwa.