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why ELCB can't work if N input of ELCB do not connect to
ground?
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Answer Posted / rayvandy
No, it doesnt need earth wire to be connected to elcb/rccb. But it is recommended to connect every electrical appliances in your house with earth wire/ground. When there is a leakage, the lccb will detect that current in the live wire is higher than current that returns to neutral wire through lccb. Because the two currents is not balance, lccb will cut off the electricity. For more info u can refer to this site: http://www.gcsescience.com/pme9.htm
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