[RE-wrenches] Bus bar battery jumpers

[Kirk Herander]

These are great charts.
What I’ve always done this to find cross-sectional area of the typical round battery cable ampacity required per the NEC. Then calculate equivalent cross-sectional area of rectangular copper bus  and buy that dimension  in 6’ lengths to make my own.

Kirk Herander


> On May 2, 2019, at 11:16 AM, Drake <drake.chamberlin at redwoodalliance.org> wrote:
> 
> What great information from you guys! Anyone who saves these tables should be able to design bus bars with confidence.
> 
> Thank you,
> 
> Drake 
> 
> 
> At 03:31 PM 5/1/2019, you wrote:
>> Content-Type: multipart/alternative;
>>          boundary="----=_NextPart_000_00A2_01D50032.EF3413B0"
>> Content-Language: en-us
>> 
>> Drake,
>> I found the information available online at the Copper Development Association website to be valuable for DC applications:
>>  
>> https://www.copper.org/applications/electrical/busbar/
>>  
>> Hope this helps.
>> -Glenn
>>  
>> From: RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> On Behalf Of drake.chamberlin at redwoodalliance.org
>> Sent: Wednesday, May 01, 2019 8:06 AM
>> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
>> Subject: Re: [RE-wrenches] Bus bar battery jumpers
>>  
>> Glenn,
>>  
>> Thank you for that good information. 
>>  
>> Where do you find the specifications relating cross sectional area to amperage? Section 366.23 of the NEC allows 1000 A / sq. in. of cross sectional area of the conductor. Is that a good rule of thumb, or is there something more specific to battery busing?
>>  
>> Drake 
>>  
>> 
>> ----- Original Message -----
>> From:
>> glenn.burt at glbcc.com "RE-wrenches" < re-wrenches at lists.re-wrenches.org>
>>  
>> To:
>> "RE-wrenches" < re-wrenches at lists.re-wrenches.org>
>> Cc:
>>  
>> Sent:
>> Tue, 30 Apr 2019 20:31:39 -0400
>> Subject:
>> Re: [RE-wrenches] Bus bar battery jumpers
>> 
>> I have always bought the appropriately sized for the anticipated current, copper bar stock from McMaster Carr and cut, drilled and applied heat shrink myself…
>> 
>>  
>> -Glenn
>> 
>>  
>> From: RE-wrenches < re-wrenches-bounces at lists.re-wrenches.org> On Behalf Of Drake
>> Sent: Tuesday, April 30, 2019 12:27 PM
>> To: RE-wrenches < re-wrenches at lists.re-wrenches.org>
>> Subject: [RE-wrenches] Bus bar battery jumpers
>> 
>>  
>> Hello Wrenches,
>> 
>> I am wiring a set of 2 V Concorde batteries for 48 V. Each battery has 2 terminals which will be about 2 1/2 inches away from the terminals they will be wired to. Standard battery jumpers would be ridiculous in this situation. Busbars would be clean and efficient. Concorde doesn't have a solution.
>> 
>> Does anyone know of a source for busbars?
>> 
>> Thank you,
>> 
>> Drake 
>> 
>> Drake Chamberlin
>> Athens Electric LLC
>> OH License 44810
>> CO License 3773
>> NABCEP Certified Solar PV 
>> 740-448-7328
>> http://athens-electric.com/ 
>> 
>> _______________________________________________
>> List sponsored by Redwood Alliance
>> 
>> List Address: RE-wrenches at lists.re-wrenches.org
>> 
>> Change listserver email address & settings:
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org 
>> 
>> List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html 
>> 
>> List rules & etiquette:
>> www.re-wrenches.org/etiquette.htm
>> 
>> Check out or update participant bios:
>> www.members.re-wrenches.org
> _______________________________________________
> List sponsored by Redwood Alliance
> 
> List Address: RE-wrenches at lists.re-wrenches.org
> 
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
> 
> List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html
> 
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
> 
> Check out or update participant bios:
> www.members.re-wrenches.org
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches_lists.re-wrenches.org/attachments/20190502/0815579e/attachment.htm>