Triping principle of ELCB&RCCB? wht is the difference
between these two?
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Answer Posted / k.prakashchandra
ELCB requires earth connection. Earth wire is taken through
ELCB to the body of the appliance.If there is any leakage
current in the earth wire ,it will trip.4 pole or 2 pole
RCCB requires neutral.It works on the principle that vector
sum of the currents in phases and neutral is zero or current
balancing.If there is any leakage current to the earth it
will be sensed by only phase and not the neutral resulting
in tripping.3 pole RCCB is for a 3 phase load without neutral.
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