Ana amfani da waɗannan igiyoyi don samar da wutar lantarki tare da tsarin Kariya Multiple Earthing (PME), inda haɗin Duniya mai kariya (PE) da Neutral (N) - tare da aka sani da PEN - yana haɗa haɗin tsaka-tsaki-da-ƙasa zuwa ainihin duniya a wurare da yawa. don rage haɗarin girgiza wutar lantarki a yayin da ya sami karyewar PEN.