Answer / mzechlin

Here is your answer:

Consider a transformer wherein the secndary of the sinding
is connected to earth or ground such that it provides a
neutral path for current flow back to the transformer. The
connection to the "Earth" or ground is considered the
Earthed connection. It provides the user the ability to
split the voltage output with reference to the legs of the
transformer. Hope that helps

generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...

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