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Answer Posted / pawan dahiya
ELCB full name earth leakage circuit breaker , normaly
ELCB used in main control line & very senstiv eqpment and
ELCB link in VCB\ACB etc. Earth leakage time going to
single in VCB\ACB so main breaker trip . But fire pumps do
not used becouse fire pumps is very emergency system.
becouse ELCB leakage time do not running the fire pumps.
fire pumps used only two earthing
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