I am an electrical power engineer and arranged power system
for a data center, I installed MCB, ELCB and erthing system
TN-C-S.
But some times several ELCBs Disconnect circuits at the
same time! what may be the reason? (the ELCBs are 25A ,30mA)
Answer Posted / k.p.sharma
Mr.chandra & mehndi is right and the normally mA of ELCB
used IS AS BELOW:-
1. FOR DOMESTIC = 30MA
2. FOR COMMERCIAL BUILDINGS ETC = 100MA
3. FOR INDUSTRIES = 300MA
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
What is the use for cable entry in control room?
Difference between field rheostat and armature rheostat.
why US countries maintains 110v and 60HZ
Dg pf .71 i am improve pf 0.80 what capacitor connected in dg how?
How will polarity test of Dy5 Transformer ?
AL=0B9H,bl=75H, ADD AL,BL AL=____________? CF________? OF___________?
how to enter inverter parameter? without manaual?
what is the importance of Partial Dischage test for Electrical Equipments
Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.
how you taken aotitude test
can any tell me why slope 40% and 80% is calculated in differential protection?
what do you mean by plant earthing system.
-How do you select cable size for a given load at a given distance from source of supply. How do you find voltage drop.
How Diesel Generator start ?
Dear sirs, pls check this 4-20ma to RS485 module datasheet,pls guve me some suggestions. http://www.szsunyuan.com/sy/pro_more.asp?Productid=539 Thanks. E-mail:yunianjiang99@gmail.com