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for 644KW load which MCCB should i use

Answer Posted / ahmed raza

Formulla for calculation of breaker is...
Total load in Watts/380(voltage)*0.8(pf)*1.732(delta to Y
conversion)
So
= 644/380*0.8*1.732
= 1223.10
we can say
= 1250AMPs breaker should be use....

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