We switched (ha!) to Siemens disconnects after the hoopla about Square D.. http://www.sea.siemens.com/us/internet-dms/btlv/CircuitProtection/HeavyDutyS afetySwitches/docs_HeavyDutySafetySwitches/HD%20Photovoltaic%20Final%2005011 0.pdf
I really don't think there is a problem using the SQD if you can series up a couple of poles. -Glenn From: [email protected] [mailto:[email protected]] 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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