why 30 ma elcb is used ?why cant 100 ma?

Answer Posted / francis

elcb is speacially used to prevent earth leakage. The 30ma
is the value of current which a system can handle boyound
this it will affected the system even a human body also

Is This Answer Correct ?    14 Yes 8 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what happend to DC shunt motor if its field winding insulation becomes slightly weak? will that motor can run on full load or not explain in detail. thanks

1176


what transformer we used normally and upto which kva?

1497


How energy is generated in hydroelectric power plant?

636


How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?

1995


I AM A ELECTRICAL PANEL BOARD DESIGN ENGINEER.IF I GO ANY INTERVIEW ,TECHNICALLY WHAT ARE QUESTIONS I WILL FACE FROM INTERVIEWER?

12308






what is the effect of power factor of machines in starting current

1530


Please elaborate th´evenin’s theorem?

702


How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?

1452


In layman terms, what is the difference of Dielectric strength and dielectric constant when speaking of an insulating oil

2177


what is the standard values(Megger test) of resistances between L&N,L&E and N&E for a system on IEE regulations?

1661


How can we find out LT UG cable fault (size,from-4*25mm sqr to 4*300mm sqr)? How mani types UG cable faults?

2578


i want wipro vlsi placement pattern please send me

1314


Can anyone tell me some hints about what type of questions are asked by the interviewer by an Electronics engineer when company is installing an IPP and wants a team of engineers?

1813


Is there any reason that we get shock on touching phase wire because the earth is at neutral potential? Is there any reason that the earth is at neutral potential because the neutral is earthed in apower station

1558


can anyone give an idea about dia calculation in cold rolling mill

1185