Thanks for clear understanding. Yes we have mccb earth fault protection though. But dnt know y client proposed this before.
The cable which has zct going to aux ddt which has different sigle phase loads like air-conditioned lights and fans and ups.
And ELR has a max setting of...
thread238-153053
i am facing same issue here . 160 amps mccb direct to ddt WITH DELTA SIDE with ELR ON IT. AND ITS GOT TRIPPING.
CAN YOU GUYS GIVE THE SOLUTIONS.
