18*1.73*1.3=40Amp Here we Have Consider 13% sc current. 50 Amp MCB is Not

hi sir i have load of 17.5kw in 3 phase lighting circuit which
mcb i can use

Question Posted / sujit

Answer Posted / sujit

18*1.73*1.3=40Amp
Here we Have Consider 13% sc current.
50 Amp MCB is Not Easily Available in Market. so Better you use 63 Amps MCB.

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