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, [email protected] <[email protected]> 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: [email protected] "RE-wrenches" <[email protected]> To:"RE-wrenches" <[email protected]> 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 <[email protected]> On Behalf Of Drake Sent: Tuesday, April 30, 2019 12:27 PM To: RE-wrenches <[email protected]> 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: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
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