Answer / arti

11kV is the transmitted voltage. Voltage is usually
transmitted at higher voltage so as to save the cost of
copper (conductor side).
All the domestic appliances as per Indian standards are
rated at 250V and P-N voltage tapped from a phase of 3-
phase 440V is 250V (440/ sqrt(3)) approx. So 11kV/440V is
used for distribution suply.

Answer / sathish

This stage is called as secondary distrbution in this stage they convert ffom 3 wire to 4 wire system. In domestic we need l-n or r-y-b-n

Answer / yasuteru

because domestic appliances work on low voltages

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