Forgot to mention the usual info: look at the pump to see if a smaller or no surge Grundfos SQE might be able to handle the flow rate and pressure needed. Pumps are cheap, when you're considering multiple inverters...... Given what you mentioned (110 amp surge at 240 vac), I don't think even a quad stack of Outbacks could do it. ( please ignore my earlier post) A quad stack could run that, just not start it. Franklin makes a soft start controller, that might work with that pump. What is the Horse power rating?
R. Walters r...@solarray.com Solar Engineer On Aug 27, 2010, at 3:52 PM, R Ray Walters wrote: > Little beyond a pair of Outbacks, possibly a pair of Magnasine inverters, or > a quad stack of Outbacks. > > R. Walters > r...@solarray.com > Solar Engineer > > > > > On Aug 26, 2010, at 2:41 PM, Joel Davidson wrote: > >> Wrenches, >> Our customer has a fire protection pumping system that operates at 240VAC >> and 22 amps with a 110 amps starting surge. The pump will only be used for >> up to 4 hours in an emergency (but hopefully never). The customer wants an >> inverter and battery (no generator or PV) in case grid power is destroyed by >> fire. What inverter(s) do you recommend? Thank you very much for sharing >> your off-grid knowledge. >> Joel Davidson >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Options & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> >> > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
