1.Lagolagoina faʻatonuga faʻapipiʻi vave e pei ole PD/QC/AFC/FCP
2.Saogalemu ma vave ona molia e aunoa ma le faaleagaina o le maa
3.E silia ma le 80% le totogi atoa ile 40 minute
4.Le tele o puipuiga saogalemu, overvoltage, undervoltage, overcurrent, short circuit, overtemperature, etc.