how much current capacity 250 amp. mccb please tell me about
whats are the reasons to trip 2 or 3 times in a night. and
what are the steps to short out this problem



how much current capacity 250 amp. mccb please tell me about whats are the reasons to trip 2 or 3 ..

Answer / k.k dash

kindly see the breaking capacity of 250 amp mccb,if it trips more than two times kindly replace the mccb with new breaking capacity such as 25 ka, 35 ka,or 50 ka,so that it capable for taking the current

Is This Answer Correct ?    4 Yes 0 No

Post New Answer

More Electrical Engineering Interview Questions

how work the lighting arrestor?

2 Answers  


1 hp single phase motor is more likely to get hot thsn inone hp 3 phase motor its true or false? If true why?

1 Answers   TVS,


why open circuit test is conducted on hv side and short circuit test is conducted on lv side of a transformer ?what is the reason for it ?

3 Answers   HCL, NTPC,


what is difference between AC VVVF drive & Dc VVVF drive explain their working principle?

13 Answers   Apollo, OPS,


how dia of wire and angles are calculated for overhead shielding wire to protect substation equipment from lightening strokes???

0 Answers  






Is there any difference between circuit breakers and isolators

7 Answers  


why fuse not recomended to neutral

10 Answers  


How to calculate earth fault current for 6.6 KV , 50 HZ , 756 Amps , 3000 RPM , 0.8 PF generator

0 Answers  


salam&hi, i need to know about how can i calculate an enough current for the new building before i submit it to the suppliers

0 Answers  


what is resver in electrical enginnering with answer

0 Answers  


how to calculate busbar size? ex:11000kva main what is the busbar size ?and how to select the correct one

4 Answers  


what is the function of anti-pumping in circuit breaker?

20 Answers   Aditya Birla, INEL, NCC,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5085)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16632)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)