Wayne I agree with Allen, the new service panel we use is made for Re applications and comes with a larger buss it is also labeled as such. Jerry
On Sun, Nov 30, 2014 at 4:29 PM, Allan Sindelar <[email protected]> wrote: > Wayne, > I don't think that you are correct. The bus rating of a 200A service panel > may or may not be 200A, but it's not simply 120% of the panel's rating. > > The original 120% rule was premised on the fact that in residential > applications, panelboards (and thus busbars) were seldom if ever run at > full ampacity, and thus a 20% "negative load" of a PV system was unlikely > to ever cause overloading and overheating of the busbar. You'll note that > this was originally allowed only in residential applications; commercial > buildings were expected to likely run at or near capacity. > > I think you'll need to get the actual busbar rating from the manufacturer. > Allan > > *Allan Sindelar* > [email protected] > NABCEP Certified PV Installation Professional > NABCEP Certified Technical Sales Professional > New Mexico EE98J Journeyman Electrician > Founder (Retired), Positive Energy, Inc. > *505 780-2738 <505%20780-2738> cell* > > > On 11/30/2014 4:45 PM, Wayne Irwin wrote: > > Hello Wrenches, > > Hope you all had a nice Thanksgiving. > > I have an AHJ asking for the service panel buss rating and the service > panel buss protection rating. > > Am I correct to assume that the rating is the service panels designated > rating x 1.2% (ie 200A x 1.2 = 240)? > and that the buss protection is the combined input breakers? 200 Main > breaker + 40A solar back feed = 240A? > > Given that there are many different size panels (150A and 200A) that share > the same bus, I have a difficult time believing this to be true. > > If there is any designated signage or data sheets specific to the service > panel, where might I find this? > I have looked at Schnider but have not been able to find anything specific. > > Thanks, > > > Wayne Irwin, > President > License #CVC56695 > State Licensed Solar Contractor > Pure Energy Solar International Inc. > [email protected] <[email protected]> > http://PureEnergySolar.com > http://SolarChargingStation.net <https://solarchargingstation.net> > 352 377-6527 Office > 352 336-3299 Fax > 352 316-1637 Cell > > The Sun Is Always Shining! > > The content of this message is Pure Energy Solar Confidential. If you > are not the intended recipient and have received this message in error, any > use or distribution is prohibited. Please notify me immediately by reply > e-mail and delete this message from your computer system. Thank you. > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & > settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.html > > List rules & etiquette:www.re-wrenches.org/etiquette.htm > > Check out or update participant bios:www.members.re-wrenches.org > > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > >
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