Lithapo tsena li sebelisoa bakeng sa phepelo ea motlakase ka litsamaiso tsa Protective Multiple Earthing (PME), moo Protective Earth (PE) le Neutral (N) tse kopaneng - hammoho tse tsejoang ka hore ke PEN - li kopanya lefatše le kopaneng le lefats'e la 'nete libakeng tse ngata. ho fokotsa kotsi ea ho tsukutloa ke motlakase ha ho ka ba le PEN e robehileng.