Inyathelo 1: Qinisekisa inkqubo yokujija
Ngaphambi kokuba u-odole. Sinethemba lokuba ungabonelela ngobude, ububanzi kunye nokuphakama kwendawo yokugcina izinto ebandayo, ubushushu obufunekayo, ubushushu obuphezulu bendawo kunye ne-voltage. Ukuba unemizobo, iluncedo kakhulu kuthi. Siza kukubonelela ngesicwangciso sakho sobuchwephesha kunye nengcaciso yesicwangciso, inkonzo elungileyo sisiqalo esihle se-odolo.