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
