In a Circuit how the MCB and Fuse ratings are calculated.
And shall the fuse follws the MCB or it is otherwise?

Answer Posted / nitin kaushik

the rating of mcb is calculated by watts divided by
575...575 is the shortest calculation of root 3 cosQ.

Is This Answer Correct ?    3 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the gross weight to copper ratio in slip ring induction motor of 4000 HP,6.6 kv, 372amp, 992 rpm GE motor.

1916


why swinburnes test cannot be performed on series machines?explain

1840


tell me about roaster switch .& what is the function in transmission & distribution?

2172


How to calculate capacitor bank value to maintain unity power factor with some suitable example?

675


What is the difference between AC and DC injection methods for rotor earth fault protection

1687






What is primary and backup protection?

749


cc of scorpio?

1795


What is sink and source?

677


11kV capacitor bank of rating 2.4KVAR, is charged with protective relays of only over current & Earth fault &.......without Over Voltage, Under Voltage & Neutral Displacement Relay. Is it advisable??

1200


why electron produce magnetic field when it is in motion?

1695


If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?

1468


in a solar power plant,we are going to step up the voltage 350V to 33kv, and to 132kv GSS. i want to ask that if it is possible that 315v/33kv is not possible because we also use 315v/11kv. or it should be 415v/33kv? is it effects generation or losses?  the second question is-generation is depends on LV winding? or LV winding design for generation voltage?

1300


In the magnetic fluxes, what is the role of armature reaction?

696


Name one of major transformer company in KSA ?

755


how point on wave controller works.

2080