Answer Posted / g.kumaresan.

If Main incomer fail in our site Immediatly to Isolate the
incomming supply and VCB. Bec's to protect the inside Heavy
Equipment insite in our site, then to inform the situation
in our Authoriy officer, at the same time to ensure the
back feeding arrangement, Bec's can not maintain the supply
intruption in long time.

So, doing back feeding arrangement immediatly with our
higher authrity knowledge and also other officer sugection.

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