[RE-wrenches] battery buss bar stock

[Steve Higgins]

Hey Jay,

>From my understanding the OCPD needs to be within 18 inches from the
positive terminals... some will use class T fuses instead of breakers for
cost...



On Dec 3, 2017 7:10 PM, "jay" <jay.peltz at gmail.com> wrote:

> So I”m curious about the location of your breakers.  Can you elaborate
> about that?
>
> Thanks
> jay
>
> peltz power
>
>
> > On Dec 2, 2017, at 1:51 PM, Gary Willett <Gary at IcarusSolarServices.com>
> wrote:
> >
> > JERRY:
> >
> > I always specify separate breakers per string (175A or 250A, depending
> on string ampacity) mounted as close to the battery bank as possible. And I
> require that if I am to be engaged for maintenance (planned or unplanned)
> after commissioning. Shunt-trip breakers facilitate meeting Rapid Shutdown
> requirements.
> >
> > Separate string breakers make battery maintenance and trouble shooting
> so much easier and well worth the first cost investment. Especially so when
> you have bad or weak cells/batteries, uneven string discharge/charge
> current, and need to isolate the culprit(s).
> >
> > If I have a maintenance arrangement with the customer, individual string
> breakers allow me to quickly/safely perform string/battery SOH (state of
> Health) testing with an internal resistance tester and/or a load test on
> individual batteries without removing wiring/busbars/etc.
> >
> > Regards,
> >
> > Gary Willett PE
> > Icarus Engineering / Solar Services LLC
> >
> >
>
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