[RE-wrenches] battery buss bars

[R Ray Walters]

I've also used the big Polaris insulated tap connectors.  I used one that has 6 ports that are max. 250 MCM, I believe.  I don't know the amp rating, but I would assume it would match the largest conductor.

R. Walters
ray at solarray.com
Solar Engineer




On Jan 17, 2012, at 11:17 AM, Allan Sindelar wrote:

> Ray,
> We have a job under contract this summer with four Sunny Islands and a Radian sharing the same battery bank. Even with the SIs protected by 125A DC breakers, that's 850A of DC capacity that we have to buss together. 
> 
> The Midnite bussbar in your link is rated 280A in its description. That seemed pretty wimpy, given that a single Radian uses two 175A GJ breakers with conductors paralleled, so I just called Ryan Mayfield, Midnite tech support. As he understands it, the limit is on the terminal strip, not the bussbar itself. He'll talk with Robin about this and get back to me; if I learn more I'll share it here.
> 
> Even the Del City bussbar is rated just 500A. Are there any higher-capacity products available?
> 
> Allan
> 
> Allan Sindelar
> Allan at positiveenergysolar.com
> NABCEP Certified Photovoltaic Installer
> NABCEP Certified Technical Sales Professional
> New Mexico EE98J Journeyman Electrician
> Positive Energy, Inc.
> 3201 Calle Marie
> Santa Fe, New Mexico 87507
> 505 424-1112
> www.positiveenergysolar.com
> 
> 
> 
> 
> On 1/17/2012 10:22 AM, R Ray Walters wrote:
>> 
>> Midnite has a new one:  http://www.midnitesolar.com/productPhoto.php?product_ID=207&productCatName=Busbars&productCat_ID=17
>> 
>> Here's a new one I just found with Del City also:  http://www.delcity.net/cartviewitem?item=80510DL&search=buss+bar
>> or http://www.delcity.net/cartviewitem?item=80006DL&search=distribution+block
>> 
>> I've used the Ilsco insulated distribution blocks available at electrical supply houses.
>> 
>> I've also made them out of 1/4" x 2" copper, and then used some weird way to isolate it, or bolted them to the breaker.
>> 
>> R. Walters
>> ray at solaray.com
>> Solar Engineer
>> 
>> 
>> 
>> 
>> On Jan 17, 2012, at 9:43 AM, jay peltz wrote:
>> 
>>> Hi All,
>>> 
>>> Where do I find buss bars for a battery parallel problem?
>>> 
>>> I've got to fix a brand new ( not me) system, that has 4 sets of L-16's at 24v.
>>> Yea yea why didn't they go to 48?
>>> 
>>> So I want to use buss bars to parallel them, and looking for premade ones.
>>> 
>>> Thanks in advance,
>>> 
>>> Jay
>>> 
>>> Peltz power
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