Ikaramu Ikosa
Imiryango myinshi yo mubwongereza ifite insinga ya PME (Protective Multiple Earth), aho insinga zisi zerekeza kumasoko nyamukuru ahuza umuyoboro utabogamye ucukurwa ahantu henshi. Izi sisitemu zifite ubushobozi bwikosa ridasanzwe ryitwa kunanirwa kutagira aho ribogamiye, aho gutandukana hejuru bitewe no gutesha agaciro cyangwa kwangirika bishobora kongera ibyago byo guhitanwa n amashanyarazi.
Kumenya Ikaramu Ikosa: Kuri sisitemu ya TN-CS idashingiye kumpera yumukoresha (nkuko bigaragara hejuru), mugihe umurongo wa PEN ugana murugo uciwe kubera ikosa ryumurongo kandi impera yinyuma yumurongo wa PEN irahagarikwa nta butaka bwongeye. , hamwe no gukwirakwiza agasanduku RCD ntabwo ikora neza muriki gihe, voltage yubutaka burinda PE ingana na voltage yumurongo wumuriro L.
Niba bidafite ibikoresho byo kurinda, igikonoshwa cya EV mukwishyuza kizishyurwa na voltage ingana numurongo wumuriro L.
voltage. Niba nta bindi bikoresho usibye charger ya EV, imiyoboro yamenetse izarenga 30mA kandi umuntu ntazashobora kwikuramo, bikaba byangiza umutekano; niba hari nibindi bikoresho, imiyoboro yamenetse irashobora kurenga 100mA byoroshye, byica cyane.