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bus bars

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johnt(at)comp-sol.com
Guest

Posted: Wed Feb 13, 2008 8:16 am Post subject: bus bars

Hi,



I know I have seen suggested material thickness - for creating circuit breaker bus bars, and the suggested material is brass.  I am wondering how one calculates the width, thickness required?  Also can someone explain the benefits of brass?



John

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Mark Phillips in TN

Joined: 10 Jan 2006
Posts: 431
Location: Columbia, TN

Posted: Wed Feb 13, 2008 8:43 am Post subject: bus bars

In a message dated 02/13/2008 10:19:06 AM Central Standard Time, johnt(at)comp-sol.com writes:

  	  Quote: 	
		  Also can someone explain the benefits of brass? 	


 Also- thoughts on using aluminum for bus bars?

  

 Thanks!

 Mark do not archive



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From The PossumWorks...

JOHN TIPTON

Joined: 17 Sep 2006
Posts: 239
Location: Torquay - England

Posted: Wed Feb 13, 2008 8:45 am Post subject: bus bars

Buy them from 'Aircraft Spruce' already made up: and move on



http://www.aircraftspruce.com/catalog/elpages/bussbars.php



John

---

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JOHN TIPTON

Joined: 17 Sep 2006
Posts: 239
Location: Torquay - England

Posted: Wed Feb 13, 2008 8:52 am Post subject: bus bars

Hi conductivity, and of course corrosion resistant

  

 John

 [quote]   ---

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gyoung

Joined: 09 Jan 2006
Posts: 211
Location: Republic of Texas

Posted: Wed Feb 13, 2008 11:14 am Post subject: bus bars

You can get brass bars from your local hobby/craft store that has one of

those K&D hobby metal displays. I got .062x.5x12 brass bars for ~$1.90 each.



Regards,

Greg Young

 



[quote] --

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nuckolls.bob(at)cox.net
Guest

Posted: Wed Feb 13, 2008 12:56 pm Post subject: bus bars

At 01:05 PM 2/13/2008 -0600, you wrote:



 	  Quote: 	
		  



You can get brass bars from your local hobby/craft store that has one of

those K&D hobby metal displays. I got .062x.5x12 brass bars for ~$1.90 each.


	


    This would have been my suggestion. Brass is preferable to

    copper for machinability . . . it's much easier to drill

    clean, round holes in brass than copper. Aluminum is

    electrically and mechanically attractive but less friendly

    in terms of creating high quality, corrosion free, gas

    tight, long lived connections under the small fasteners

    (6-32).



    Thickness is not critical. A flat sheet of material

    has excellent heat rejection qualities compared to

    round wires under insulation. A bus fabricated from

    .025" brass will be just fine . . . especially if you

    bring the bus feeder into the center of the bus.



    Use internal tooth lockwashers under the screws and

    torque to 80% of rated limits at final assembly.



    Bob . . .

        ----------------------------------------)

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

        ----------------------------------------

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