How to select Main CB Rating for 220 KW Load?
Answers were Sorted based on User's Feedback
before the selection,first we should know that it is single
phase or three phase load.in case 1-phase we use p=vicosф to
find out the load current but in 3-phase we use p=√3vicosф.
suppose it's 3-phase then load current=382amp.now add
minimum 25% safety factor to it.then it will be 475amp ,so
we can select C.B of 500amp current rating.
Is This Answer Correct ? | 7 Yes | 1 No |
Answer / sennapparajan
for 220kw load curent is 380 amps. so your breaker should
be min 1.5 times of full load current. so u can select 630A
breaker.
Is This Answer Correct ? | 5 Yes | 3 No |
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