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Member

Join Date: Sep 2012
Posts: 8

Busbar Calculations

10/08/2012 1:27 AM

Q.1) What is the thumb rule or formula for calculating copper and aluminium bus bar size.

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Pathfinder Tags: Busbar current density
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Guru

Join Date: Oct 2007
Location: India
Posts: 1246
Good Answers: 34
#1

Re: Busbar calculations

10/08/2012 3:07 AM

Please search this Forum for - sizing busbar - There are, you will find, many threads on this subject. A few of them are given below:

Re: Busbar Sizing

Re: Busbar Sizing

Re: Busbar Sizing etc. etc.

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Guru

Join Date: Oct 2009
Posts: 2061
Good Answers: 169
#2

Re: Busbar Calculations

10/08/2012 9:31 AM

I was told once by my mentor that "Tumbs are for sucking".

Oh! Yes! Any engineering sizing shall not be based on thumb rules; one has to do a precise calculation.

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#3
In reply to #2

Re: Busbar Calculations

10/08/2012 11:57 AM

the tell us the detailed precise calculation.....

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Guru

Join Date: Oct 2009
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#4
In reply to #3

Re: Busbar Calculations

10/08/2012 12:03 PM

How can a "detailed" calculation be "precise"?

Suggest you attend to a structured training programme on Switchboard Design.

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#5
In reply to #4

Re: Busbar Calculations

10/08/2012 12:49 PM

i need to find out the copper bus bar for 400 Sqmm Al cable termination? actually i am bit confused between current density of copper ie.. 1.6 Amp/Sqmm or 1.2 Amp/Sqmm ?

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Guru
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#6
In reply to #5

Re: Busbar Calculations

10/08/2012 1:47 PM

Click HERE

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Guru

Join Date: Jun 2007
Location: chennai,India
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#7

Re: Busbar Calculations

10/09/2012 2:48 AM

I have developed APP for " Busbar design for Switch boards & Busducts" which will work on Iphones and Ipads.This is under verification with Itunes before release and this may be available in APPS store shortly.

Briefly this application will give you Current rating for a particular cross section of busbar (Aluminum or Copper )after deration due to temperature,enclosure size and enclosure material.This application has been developed taking reference from books like 'Aluminum Busbars' by Thomas and Rata and Copper Development Authority,London. and personal experience. I hope this will be useful to Electrical Engineers.

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Ramesh,Freelance Electrical/automation Consultant
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Guru

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Posts: 2061
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#8
In reply to #7

Re: Busbar Calculations

10/09/2012 9:44 AM

Good to know that! When would this be released?

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