You might possibly check with Northwest energy storage all of their hup solar 
one batteries come with solid copper bars lead plated I don’t know what the 
ampacities are but Rob might be able to assist you there

Dana Orzel
C: 208.721.7003
E- d...@solarwork.com

> On Sep 10, 2022, at 7:17 PM, Kirk Herander via RE-wrenches 
> <re-wrenches@lists.re-wrenches.org> wrote:
> 
> 
> SolarBOS can possibly make one custom for you, it will be listed, and it will 
> not be cheap. I was going to order a 2000A w/ multiple OCPDs on both inputs 
> and outputs from them, but then Midnite came out with a 2000A combiner, and I 
> don't need it listed for my application.
> 
>> On Sat, Sep 10, 2022 at 6:15 PM William Miller via RE-wrenches 
>> <re-wrenches@lists.re-wrenches.org> wrote:
>> Mac:
>> 
>>  
>> 
>> Getting listing on something as specialized as you are talking about may be 
>> difficult.  I would turn to the telecom industry for solutions.  Here is one 
>> link I found.  Their product line is pretty sexy and it is listed.
>> 
>>  
>> 
>> If you are rolling your own, you can find ampacities for standard copper bar 
>> thicknesses someplace like here.  You might fabricate something that looks 
>> like one of these but bigger.  Threading is desirable so you can avoid 
>> wrangling nuts on the back sides, but tapping copper at a reasonable bolt 
>> size (likely 3/8-16) can be tricky.  I am looking for any excuse to buy one 
>> of these drill presses which can automatically chip-clear.  Basically at 
>> this point in my life my only reason for working is to support my tool 
>> addiction.
>> 
>>  
>> 
>> Good luck.
>> 
>>  
>> 
>> William Miller
>> 
>>  
>> 
>> Miller Solar
>> 
>> 17395 Oak Road, Atascadero, CA 93422
>> 
>> 805-438-5600
>> 
>> www.millersolar.com
>> 
>> CA Lic. 773985
>> 
>>  
>> 
>>  
>> 
>> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On 
>> Behalf Of Mac Lewis via RE-wrenches
>> Sent: Thursday, September 8, 2022 8:46 PM
>> To: RE-wrenches
>> Cc: Mac Lewis
>> Subject: [RE-wrenches] Large current battery combiners, UL Listing
>> 
>>  
>> 
>> Hello Wrenches,
>> 
>>  
>> 
>> Is anyone aware of a high current, (~3000A DC rated, 48Vdc nominal) battery 
>> combiner panel that would allow for ~36-48 x 4/0 cables to connect?
>> 
>>  
>> 
>> Seems like nothing will be close to UL listed on this.  How do you go about 
>> building a 60 kW off-grid system on the battery side of things?  Do I need 
>> to increase battery voltage design?
>> 
>>  
>> 
>> I have gotten a custom busbar fabricated by Storm Power rated for about 2kA 
>> before, but I'd love to have a UL Listed solution for large battery 
>> combining.  Any suggestions are appreciated.
>> 
>>  
>> 
>> Thanks!
>> 
>>  
>> 
>> --
>> 
>>  
>> 
>>  
>> 
>>  
>> 
>> Mac Lewis
>> 
>> "Yo solo sé que no sé nada." -Sócrates
>> 
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> 
> 
> -- 
> Kirk Herander / kirkh@vermont.solar
> Owner|Principal, VT Solar, LLC
> Celebrating our 31st Anniversary 1991-2022!!
> www.vermont.solar
> dba Vermont Solar Engineering
> 802.863.1202
> _______________________________________________
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