Imibandela yeziqu zokuvala indandatho:

(1) igcwele ukuqina nokuqina;

(2) amandla afanelekile womshini, kufaka phakathi amandla wokunweba, ukunwebeka namandla okuqina, njll.

(3) ukusebenza kuzinzile, akukhona ukuvuvukala okulula phakathi, umphumela omncane wokushisa okushisayo (umphumela we-joule).

(4) kulula ukucubungula ukubumba, futhi kungagcina ngokunemba ngosayizi.

(5) akukho ukugqwala oxhumana naye, akukho nendawo yokungcola, njalonjalo.

Ukuhlangabezana nezimfuneko ezingenhla into efanelekile kunazo zonke futhi esetshenziswa kakhulu iraba, ngakho-ke indandatho yokufaka uphawu yenziwe kakhulu ngezinto zenjoloba.Izinhlobonhlobo zenjoloba, futhi zihlala zinezinhlobonhlobo ezintsha zenjoloba, ukuklanywa nokukhethwa, kufanele ziqonde izici zazo zonke izinhlobo zenjoloba, ukukhetha okunengqondo.