what is the difference in using the 125% and the 250%
factor of safety in calculating circuit breakers capacity
for motors,which is more reliable to use the 125% or 250%??
- 1 Answers
- 3813 Views
- I also Faced
- E-Mail Answers
Answer Posted / wareagle
You are not required to use 125% for motors. The NEC says
that the breaker rating can be up to 250% of the motor FLA.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Make a list observation on Transformer?
In Dyn11 power transformer if any one of the 3 phases connected to earth in star connected side then please explain effect of the current flow in delta connected side of transformer.(In this case if one phase is shorted to ground in star connected side then we observe the current flow in two phases only not three phases in delta connected primary side. Please explain why it is so?)
explain safety measures in alternator?
Define unilateral circuit?
how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.
What is BusBar integrity test and how it is conducted?
why the rotor current becomes in steady state during high slip region? please verify with equations.
what will happen if earth of 33 kv cable (earthed system) is not connected to earthing pit?
what is The difference between national electrical code and I.S.Code (electrical) and what is the value of NEC in electrical engineering field
2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?
How do u analyse protection fault when vcb tripping on load
i wasted one year for the job after completed my btech what can i say about 1year time in interview
Why delta star trformers are used for lighting loads?
What is knee point voltage of transformer?
previous year paper of ntpc bhel for degree in electrical enng
