Answer / kannapa

busbar I = 1.4xtransformer kva this is apparent power.

busbar I = 1.74xtransformer kva this is for load in kw.

actual this is on low votage i.e., 415v 3phase only.

p=1.732xvxI from this we can obtain for different votages
and power ratings.
v may be 11kv,415,220v etc

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