[RE-wrenches] Combining Solectria PVI 2500 with SB3000

[Dave Click]

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 at 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
>