Irhasi yendalo inokuhanjiswa kubasebenzisi bezemizi-mveliso nabasekhaya abayifunayo. Ithunyelwe ke kwaba basebenzisi ngokuncitshiswa kwe-voltage ye-voltage. Ukuncitshiswa koxinzelelo oluphezulu okanye umlawuli woxinzelelo lwendawo okanye ibhokisi yomlawuli woxinzelelo.
