Dave, You can also change the jumper settings on the SMA, so that it does not require a neutral.
Regards Carl On Apr 19, 2012 2:06 PM, "Dave Palumbo" <d...@independentpowerllc.com> wrote: > Dave, > > Very good. Thanks for the pick up on the 650A Service Disconnect issue. > > Dave Palumbo > > -----Original Message----- > From: re-wrenches-boun...@lists.re-wrenches.org > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Click > Sent: Thursday, April 19, 2012 1:39 PM > To: re-wrenches@lists.re-wrenches.org > Subject: Re: [RE-wrenches] Combining Solectria PVI 2500 with SB3000 > > This is fine; your PVI2500 is rated for 10.4A, while the SB3000 is 12.5A. > You can put up to 24A rated current through your 30A fuses. > Though the disconnect isn't technically a service disconnect, I'd recommend > using a 60A rated (fused at 30A) disconnect per 230.79(D). You would run a > neutral to your combining panel and I'd recommend a "PV SYSTEM ONLY; NO > LOAD > CIRCUITS TO BE ADDED" placard on that. Otherwise that'll be an > electrician's > first choice when wiring up the new 40A hot tub. > > I think something like the Cutler-Hammer BR24L70RP panel may be a good fit, > and it would replace your fused disconnect. It only has space for two 2P > breakers (no main). > > On 2012/4/19 12:29, Dave Palumbo wrote: > > Wrenches, > > > > We have an installation in place since 2008 working well with a > > Solectria PVI 2500 feeding a supply side grid connection. > > > > Homeowner wants us to double the system size now. I can buy a SB3000 > > inverter for $ 300 less than the Solectria PVI 2500 (with upcharge for > > 10 yr warranty) and I'm inclined to go with the Sunny Boy. > > > > We would add an Inverter 240Vac combiner load center before our 30A > > Fused Disconnect. I would think that it would be OK to combine the > > 240vac outputs of different inverter manufacturers and sell into the > > grid but never having done this I wanted to run it by you folks. The > > SMA phone tech didn't seem to be the most experienced person and after > > I spoke with him for a minute I had him saying that it should work fine. > > But wanted to check with more experienced people. > > > > One wrinkle is that the Solectria does not use a Neutral, but the > > Sunny Boy does. Again, I don't think that this will any problem. > > > > David Palumbo > > > > Independent Power LLC > > > > 462 Solar Way Drive > > > > Hyde Park, VT 05655** > > > > */www.independentpowerllc.com /* > > > > NABCEP Certified PV Installer > > > > Vermont Solar Partner > > > > 24 Years Experience, (802) 888-7194 > > > > > > > > _______________________________________________ > > 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 > >
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