[RE-wrenches] Bus bar battery jumpers

[Bill Hennessy]

table 3 is a bus bar size selector based on ampacities--you can match that with what Mcmaster offers in 101 copper (higher purity than standard 110 copper).we've made bus bars for years using this method. trickiest part is drilling a clean hole in the copper.

https://www.copper.org/publications/pub_list/pdf/a6022.pdf
Bill Hennessy
Berks Solar, LLC
371 Centennial Rd
Mertztown, PA 19539

o 610 682 4300
c 484 560 4666
NABCEP certified installer
PA contractor #44411
www.berkssolar.com 

    On Wednesday, May 1, 2019, 8:05:59 AM EDT, drake.chamberlin at redwoodalliance.org <drake.chamberlin at redwoodalliance.org> wrote:  
 
 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/ 


 
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