1.Ts'ehetsa liprothokholo tsa ho tjhaja ka potlako joalo ka PD/QC/AFC/FCP
2.E bolokehile ebile e tjhaja kapele ntle le ho senya betri
3.Ho feta 80% tefiso e felletseng ka metsotso e 40
4.Litšireletso tse ngata tsa polokeho, overvoltage, undervoltage, overcurrent, short circuit, overtemperature, joalo-joalo.