SMA makes a SunnyBoy 4000US CL (CL for current limited)....This is actually a 3800 watt inverter with a max continuous output rated at 16A allowing you to use a 20A backfeed breaker in a 100A panel and still meet the 120% rule......It should be readily available from SMA but maybe not on the distributors shelf........ We have used them before to satisfy this requirement with no problems.... Cheers.
-- Sunny Regards, Kirpal Khalsa NABCEP Certified Solar PV Installer Renewable Energy Systems www.oregonsolarworks.com 541-218-0201 m 541-592-3958 o On Sun, Oct 31, 2010 at 12:58 PM, Glenn Burt <[email protected]> wrote: > We are opting more and more for supply side connections in these > situations (assuming convincing the customer that an upgrade to a 200A > service/panel is not an option). We have yet to run into an AHJ that cannot > be made to see this is a good option and we use Ilsco Kup-L-Taps to pierce > the main conductors inside the load center, prior to their landing on the > main breaker. > > > > -Glenn Burt > > Alteris Renewables, Inc. > > > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Dave Palumbo > *Sent:* Sunday, October 31, 2010 2:35 PM > *To:* 'RE-wrenches' > *Subject:* Re: [RE-wrenches] 3.7kW grid tie > > > > AC Point of Connection could be to a backfed 20A DP breaker in the existing > GE TM3210CCU load center (100A MB with 100A busbar) if the SMA SB3800 > inverter was still available. But a SB4000 requires a 25A breaker which > violates the 120% rule with the existing panel. > > Comments on the options below. > > > > #1) Go with another 240v grid tie inverter in the 3800W range, so we can > use a 20 Amp breaker. I see PV Powered and Kaco have 3500’s listed. Any 3.7, > or 3.8kW inverters? > > > > #2) Is it possible to either, change out the Main Breaker in the above GE > load center to a lower amperage MB, or add a Plug In Breaker. There is a GE > “feeder type” breaker # THQL2190 (90 A DP). Could we use this as the main > breaker for the load center above? It is listed as a 10KAIC breaker. > > > > #3) Swap out existing 32 space load center and replace with 150AML panel > with 100A MB kit. > > > > Thanks, > > Dave Palumbo > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > 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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