1.Idizayinelwe ukuhlangabezana nezindinganiso zamanje ze-50A-300A,
2.lesi sixhumi esisezingeni eliphezulu sakhiwe ngezinto ezisezingeni eliphezulu njengethusi, insimbi ne-aluminium.
3.Ngesikhathi sokuphila semijikelezo engu-10,000, ukuze kuqinisekiswe ukuqina nokwethembeka ekusebenziseni isikhathi eside.