Umugozi wa voltage nkeya wagenewe gutwara amashanyarazi kuri voltage mubisanzwe munsi ya volt 1.000. Izi nsinga zikoreshwa cyane mubucuruzi no guturamo, kuko ari ngombwa mugukwirakwiza amashanyarazi mumutara, gushyushya, nizindi sisitemu y'amashanyarazi. Gusobanukirwa ibisobanuro byumugozi wa voltage nkeya ni ngombwa kubanyamwuga mu nganda z'amashanyarazi, kuko