What is the correct size Circuit breaker for the input of a 12KVA 208 V UPS?

Question

What is the correct size Circuit breaker for the input of a 12KVA 208 V UPS?

Answer 1

If Yayha doesn't know, he should just say so.

60 amps should do.

Answer 2

well lets c

in sizing a CB for UPS, certain measures should be taken during calculations, according to the standard u are following

but anyway generally u have:

design current= S/(1.732xVxcosPHI)

where V is the line to line voltage, and cosPHI is the power factor

now to get the CB rating:

u multiply the design current by 1.1 or 1.25 according to the standards u r following

but, its all a matter of sense and practice

Answer 3

Current for a 12000va ups is 57.69 at 208 volts. SO the appropriate circuit breaker is 60 amperes, 2 poles.