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I am an electrical power engineer and arranged power system
for a data center, I installed MCB, ELCB and erthing system
TN-C-S.
But some times several ELCBs Disconnect circuits at the
same time! what may be the reason? (the ELCBs are 25A ,30mA)
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Answer Posted / prakash veer singh
Dear Mahdi
Some Current is leakege in earth form circuit and
equepment . so your ELCB was trip.so frist check the all
circuit .
you are using TN-C-S earthing .in this common earth use
for nutral and grounding .
I suggested you for use TN-S type earthing .
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