Answer / ram

It is has advantage?let see

power= VICOS(@)

when voltage is reduced,current increases to keep the power
constant,

consider that ur going to export 500w power to user
current(i)=500*0.8/110=3.63A
if its is 230 v
current(i)=500*0.8/230=1.73 A

note that current is nearly doubled it will increase the
conductor cost and breaker rating etc.
110 v transmission line requires conductor of more capacity
when compared to 230 v

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What is error of a measurement?

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