[RE-wrenches] Disconnets

[Jesse Dahl]

I've been using similar "solar" disconnects. Its nice to see UL.  I looked
at a local solar project today that the installer used GE 600VAC/250VDC
disconnects on the DC side.  Three strings with each being broken by one
pole.  It had passed inspection.

Jesse

On Sat, Aug 25, 2012 at 7:38 PM, Glenn Burt <glenn.burt at glbcc.com> wrote:

> We switched (ha!) to Siemens disconnects after the hoopla about Square D..
> ****
>
>
> http://www.sea.siemens.com/us/internet-dms/btlv/CircuitProtection/HeavyDutySafetySwitches/docs_HeavyDutySafetySwitches/HD%20Photovoltaic%20Final%20050110.pdf
> ****
>
> ** **
>
> I really don’t think there is a problem using the SQD if you can series up
> a couple of poles. ****
>
> ** **
>
> -Glenn****
>
> ** **
>
> *From:* re-wrenches-bounces at lists.re-wrenches.org [mailto:
> re-wrenches-bounces at lists.re-wrenches.org] *On Behalf Of *Jesse Dahl
> *Sent:* Friday, August 24, 2012 9:43 PM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] Disconnets****
>
> ** **
>
> Hello,****
>
> ** **
>
> I've been having a long conversation with a local guy
> about disconnects that are usable in DC PV circuits.  From what I have
> seen, GE, Eaton... they are usable up to the 250VDC it has listed on the
> labels, or more if poles are wired in series. The squared D 600Vac/dc is
> self tested to 600VDC/pole.  The disconnects in question are not the "solar
> disconnects" on the market now. ****
>
> ** **
>
> What are people using for the GDI systems?  I seem to think that if if
> says 250VDC on the label, that is its rating unless you wire pole in series
> and the manufacturer has literature saying that that is acceptable.  ****
>
> ** **
>
> Thoughts on the square D self listing?****
>
> ** **
>
> ** **
>
> Jesse****
>
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