Yeah, that threw me at first, too. Especially since at 240 V, the ac output of that inverter is 21 A, which is half of the reported 42 A phase current.
On Aug 30, 2012, at 3:56 PM, Dave Click wrote: > Thanks David, I was in residential mode and just saw the 240V listed in the > OCPD table! > > On 2012/8/30 16:47, David Brearley wrote: >> I'm assuming it's a balanced 3-phase interconnection, which fits with the >> reported phase current of 42 A: >> >> (3 x 5000 W) / 208 V / 1.73 = 41.7 A >> >> Or more simply: >> >> 24 A per inverter x 1.73 = 41.5 A >> >> However, no one reviewing a single-line should have to guess about the >> service type.... >> >> On Aug 30, 2012, at 3:12 PM, Dave Click wrote: >> >>> I've seen that one a lot, too. And not to quibble, but the 1-line depicts >>> this correctly (no inline fuse shown in the inverter DC disconnect box), >>> though there should be a note making this more explicit. >>> >>> Speaking of sunny days turning off the system, how about the 3 30A inverter >>> breakers' combined feed going into a 55A breaker. Also... a 55A breaker? >>> Really? I guess the designer wanted to leave a little headroom to avoid >>> scaring the 60A disconnect. >>> >>> DKC >>> >>> On 2012/8/30 14:35, Andrew Truitt wrote: >>>> >>>> Ahh yes, the old "combine strings before landing on a fused DC input >>>> terminal" trick. Sure to blow the fuse the first sunny day. This is >>>> why SMA created their fuse-bypass DC input terminal. I take it the >>>> installer was not aware of this... >>>> >>>> >>>> >>>> For a brighter energy future, >>>> >>>> >>>> Andrew Truitt >>>> NABCEP Certified PV Installer™ (ID# 032407-66)____ >>>> >>>> Principal >>>> Truitt Renewable Energy Consulting____ >>>> >>>> (202) 486-7507 <tel:%28202%29%20486-7507>____ >>>> >>>> http://www.linkedin.com/pub/andrew-truitt/8/622/713 >>>> >>>> >>>> >>>> "Don't get me wrong: I love nuclear energy! It's just that I prefer >>>> fusion to fission. And it just so happens that there's an enormous >>>> fusion reactor safely banked a few million miles from us. It delivers >>>> more than we could ever use in just about 8 minutes. And it's wireless!" >>>> >>>> ~William McDonough >>>> >>>> >>>> >>>> >>>> >>>> >>>> On Thu, Aug 30, 2012 at 11:53 AM, Jason Szumlanski <[email protected] >>>> <mailto:[email protected]>> wrote: >>>> >>>> I was sent to look at another contractor's work, and found three >>>> SB5000 inverters with blown string input fuses. I was able to >>>> determine the reason pretty quickly, and was later sent the original >>>> 1-Line, which was installed per the drawings. The 1-Line came from a >>>> "leading system integrator" who shall remain nameless. >>>> >>>> See anything wrong? >>>> >>>> https://www.sugarsync.com/pf/D6539806_8669786_010829 >>>> >>>> Just goes to show you - the contractor needs to take responsibility >>>> and verify the specifications are correct, safe, and code compliant. >>>> >>>> Jason Szumlanski >>>> Fafco Solar >>>> >>>> _______________________________________________ >>>> List sponsored by Home Power magazine >>>> >>>> List Address: [email protected] >>>> <mailto:[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 >>>> <http://www.re-wrenches.org/etiquette.htm> >>>> >>>> Check out participant bios: >>>> www.members.re-wrenches.org <http://www.members.re-wrenches.org> >>>> >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> 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 >>>> >>> _______________________________________________ >>> 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 >>> >> >> _______________________________________________ >> 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 >> >> > _______________________________________________ > 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 > _______________________________________________ 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
