For a certain load i need 100kw load ,In that case what
rating mccb should i use?

Answer Posted / rajat

for 100 kw means 100000watt

use formula p= vi

100000= 230xi

i=100000/230= 430 amp

we always use current rating of the mccb is 1.5 times of full load current so we can use 430x1.5= 645 amp

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