Answer Posted / murali290

as phases increases the power handling capability
increases.so,compared to 1-ph&2-ph ,3-ph has more power
handling capacity.
but more than 3-ph has following problems even high
power handling capability
1:as no.of phases increases wounding of winding in
generator ,transformer becomes complex.
2:providing of heat sinks coplex
3:in transmission more length cross arms & heavy
supporters are required.
etc...........
by considering all above things we prefered 3-ph
system.

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