In a Circuit how the MCB and Fuse ratings are calculated.
And shall the fuse follws the MCB or it is otherwise?
Answer Posted / srihari
first we have to calculate the total load according that we
can use the formula whether it is single phase I=p/V cos(i)
or 3phase I=(P*L.F)/(1.732*V*cos(i))
for example if we get the value 20Amps, so we should choose
near to that value of rating MCCB(32A)
Is This Answer Correct ? | 14 Yes | 3 No |
Post New Answer View All Answers
WHat is the requirement of installing FAST ACTING EARTH SWITCH in GIS and how is that integrated with protection system. How and when does it operate?
How one can check the MAIN of a house wiring ?
how can you size an automatic voltage regulator?
i want bhel placement paper for electrical if anybody having pl send to my id kavitha867@myway.com immediately
how we can explain arc heatng?
How can we calculate the efficiency of a Running (On-Load) Motor ? What parameters are required and what is the method ?
If 24 KVA AVR having Input voltage 200-400v, Output voltage 415+-1%, what will be the voltage if Load is 13A.
1) Explain why we don't link the two earthing system ht and mv on a pole mounted transformer sub-station.
Meaning of ingrace protection for motor.for ex IPXY
Earth has zero potential then what would be the neutral potential ?
What is shutdown of electrical sub station?
i have total 8 dg sets for synchronizing and 2 buscoupler,1 sectoin dg no 1,2,3,and 2 sectoin dg no 4,5,6,and last section dg no 7,8 ....if buscupler no 1 and 2 is off mode ..than dg no 1,2,3,will synchroniz of another dg sets?
how to check avr of dg set of 125kva
we need a ntpc previous papers
sir i have a car stereo system and there is jack on him so can u tell me a way to find out their power terminals on the jack or on the circuit board"