HamidEle
Electrical
- Feb 20, 2007
- 309
I am sizing a feeder breaker for a 112.5KVA Transformer(600v/208v). As per Canadian Electrical Code.The primary breaker shall be sized not larger than 1.25FLA (Pri)if the secondary breaker is sized larger than 1.25FLA(sec).Therefore I chose 150A FDB cutlerhammer Circuit breaker.But it is also noticed that this breaker may trip on inrush current(12FLA). In this case. can we choose a larger size of CB, like 200A. or alternatively, we can choose a different type of CB with adjustable digit trip unit.
Any inputs would be appreciated.
Any inputs would be appreciated.