How to do Short circuit current calculation|Cable sizing calculation part-3

[@FaheemNawazwarangalwaale]

For power DB u considered default system SC current is 10ka,how can we decide, because I have another panel DGLV of 250A main with 3ways of 250A each. Does it depends on load? Please reply. Thanks

[@Kk-hs4qf]

Suppose my office is getting power from a 100kva transformer with sc rating 3kA. Should I select my cable based on 3kA or power DB sc rating of 10kA?

[@thesilentgamer4210]

Hello sir. Thank you for the great tutorial. Can I use 2 runs of same size smaller cable to compensate the kA rating? Example the system fault kA is 15kA. then 1 run 2 single core cable with 10kA capacity each.. is this okay?

[@thesilentgamer4210]

I hope to hear from you guys . Thank you for sharing your knowledge

[@mohanalria8101]

Very informative video,sir please make video how to calculate short circuit current

[@satheshdharumu3262]

Do you know prospective short circuit current ? If you know pls explain how to calculate for mccb mpcb etc

[@ushashmi]

what is the effect on short circuit capacity if we increase number of runs of cables per phase ?

[@heynid]

Hi, Can you please share, Where I can find the short circuit current of DBs and other equipment? I mean is there any standard/Table for that? Like IEC classification?

[@openeering]

The best

[@ranjan1436]

Is it necessary to size a cable, if the length of the cable less than 100 Mts?

[@electricalmastar]

Thanks for your comments and yes it is necessary to consider cable calculation below 100m

[@stevengerrard286]

Can i use two cable of 70 mm sq to increase the cable short circuit capacity of 20 A.?

[@electricalmastar]

Yes off course you can use 2 numbers of cable to increase short circuit withstanding capacity

[@charithaniroshan5663]

Can you please mention the relevant IEC or BS standard for this equation ?

[@anandababupvn1938]

Please provide reference international standard for this formula. Is this mentioned in IEC 60502.

[@bollinenipavan5830]

sir please make the video for power factor demaand factor efficiency of load

[@gzoro1]

Hello How we now the system short circuit current ? In this example is 10 kA

[@rebokahawaki6591]

Kind Sir
How much is the Temperature in this Formula?

[@ranjan1436]

You have not considered the breaker closing time?

[@electricalmastar]

I have considered as per standard time 1sec

[@umakantkamalapure1459]

What basis short circuit current calculation in selection MCCB income, outgoing feeder

[@electricalmastar]

Thanks for your comments, for circuit breaker sizing i already posted one video please check the link
ruclips.net/video/kh3uaPrxMUA/видео.html

[@baruaanup]

5:38 where can I get the chart that, 10kA for power DB and others. Thanks

[@jabbarfahad687]

thank

[@umarchohangujjar233]

Dear Sir,
I am really thankful to you for this lecture.
Please make a video on how to find short circuit current of motor.
Regards

[@RizwanKhan_99]

Where 143.08 came from