Izici:Ukusekela okwenziwe ngendlela oyifisayo, okuhlanganisa ubukhulu bekhoyili, igeji yocingo kanye nenani le-inductance namandla.

Isicelo:Ukushaja umakhalekhukhwini, ukushaja imitha yobuhle, isixubho sikagesi, Imikhiqizo yezimoto njll.