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Hi, Like we mention AF/AT (Ampere Frame/Ampere Trip)ratings for MCCB, is there any thing that we can mention the same for ACB's & VCB's. If so, for a 1200A frame VCB, what are the AT ratings available. thaks in advance, tlp23

Hello, I have a panel connected with different types of loads like motors, lighting, sockets etc. The total load current on the panel is 135Amps. By considering the 80% loading of the breaker(135A x 1.25 = 168.75A) i need to select a breaker of size 200A. Now what is the breaker AT rating i...

Dear All, I am trying to find out the voltage drop in a Copper cable of size less than 16sq.mm. Basically it is a 3 phase circuit & i have got the unit voltage drop mV/A/m value from BS 7671. As all of you know the formula for voltage drop calculation is Vd=(mV/A/m)*Length*Current/1000. now...

Dear all, Thanks for the answers. 7another4, could you please let me know the section in which it is given as 40% filling. Regards, Lakshmipati

Dear All, Could you please let me know the percentage cable filling allowed for a conduit as per BS/IEC. Regards, Lakshmipati

thanks to all for the info.

Dear all Could you please tell me the methods of earthing (i.e materials). I know about using Ground rods/pits for the same. I heard from some where about using Deep bed anode system which gives less resistance & one more system using some type of Chemicals. Regards, Lakshmipati