[RE-wrenches] Large current battery combiners, UL Listing

Glenn Burt Glenn.burt at glbcc.com
Fri Dec 2 14:19:39 PST 2022

I recently found that Victron makes DC bus bars for battery work with studs already on them. Up to 600A models are available.-GlennSent from my 'smart'phone, so please excuse typos and spelling errors.------ Original message------From: William Miller via RE-wrenchesDate: Fri, Dec 2, 2022 3:42 PMTo: RE-wrenches;Cc: William Miller;Subject:Re: [RE-wrenches] Large current battery combiners, UL ListingColleagues: I am gearing up to tap some more copper.  I assume this is a pertinent subject since bus bars are going to be needed frequently for any storage work. I bought the fancy drill press with the tapping function and I am setting it up.  I ran a few tests and the functionality of the tool is pretty amazing.  I still need to work on programming it to reverse when needed.  I am close.  I also ordered a cross vise for part holding. I found this tutorial on line that has provided me with some valuable insight on different styles of taps.   William Miller Solar17395 Oak Road, Atascadero, CA
 93422805-438-5600www.millersolar.comCA Lic. 773985  From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Michael Morningstar via RE-wrenchesSent: Monday, September 12, 2022 7:39 PMTo: RE-wrenchesCc: Michael MorningstarSubject: Re: [RE-wrenches] Large current battery combiners, UL Listing No, I haven't. I'll do some testing tomorrow as we have 60 holes/taps to do in the above mentioned bussing On Mon, Sep 12, 2022 at 7:54 AM frenergy via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:Michael,             Are you using kerosene as a cutting fluid?  We've had better luck with that in softer than steel metals.BillFeather River Solar ElectricBill Battagin, Owner4291 Nelson St.Taylorsville, CA 95983530.284.7849CA Lic 874049On 9/11/2022 7:00 PM, Michael Morningstar via RE-wrenches wrote:> We've gotten around needing UL listings for one-off in house > fabrication by running things through a licensed engineer. Right now > we are building a gutter bus which
 has two 1/2" x 4" x 20' copper bars > in a 10" x 10" gutter. We are using 2" x 9" x 9" UDPM plates with > slots routed out for the bars as insulators. This is for 24 Discover > AES and 8 Sol-Ark's. It usually costs about 1K to have an engineer > sign off on our designs.>> I'd be interested in learning tricks for tapping 3/8" in thick copper. > I've never been able to get consistent results and resort to > thru-bolting.-- This email has been checked for viruses by Avast antivirus software.www.avast.com_______________________________________________List sponsored by Redwood AlliancePay optional member dues here: http://re-wrenches.orgList Address: RE-wrenches at lists.re-wrenches.orgChange listserver email address & settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.orgThere are two list archives for searching. When one doesn't work, try the
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