Yakhiwe futhi yakhiqizwa ngokuhambisana ngokuqinile nezindinganiso zikazwelonke, yakhiwa umzimba, isistimu yokufudumeza, uhlelo lokujikeleza komoya, uhlelo lokulondoloza ukushisa, uhlelo lokupholisa kanye nesistimu ye-interlock yokuphepha .Isango lifakwe imishini futhi idivayisi yokuxhuma kagesi, izokhala ngaphansi kwezinga lokushisa elingaphezu kwamandla noma ingcindezi eyeqile, futhi izophola ngaphansi kwezinga lokushisa elingaphezu kwamandla kanye nengcindezi yokukhululeka ngaphansi kwengcindezi enkulu.