How we calculate the size of H.T cable for any transformer &
rating of busbar for any L.T. panel?

Answer Posted / sakthipriya m

Rating of busbar L.T.Panel

Current rating - Depends on the incomer of L.T.Panel and kva
rating of the transformer.
e.g.
If the incomer of L.T.Panel is 1000 A then rating of aluminium
bas bar will be 100X10X1R

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