Sorry, 200 amp main breaker in a 400 amp rated panel.
> Hi Daryl, > > From your description, yes, if you are attaching to lugs connected to > busses and then to the 400A main breaker, with no other overcurrent device > between, you would have to size the wire for the 400A rating. > > Brian Teitelbaum > AEE Solar > > -----Original Message----- > From: RE-wrenches [mailto:[email protected]] On > Behalf Of [email protected] > Sent: Thursday, June 15, 2017 4:10 PM > To: RE-wrenches > Subject: Re: [RE-wrenches] Question > > I re-read and see that I need to clarify my earlier question. The 400 amp, > 120/208 panel has a main breaker that will be used for the utility input, > coming in on 3/0 copper. The four 60 amp breakers will be used because > the four 10 kW inverters maximum ac output is 48 amps each (x 1.25 =60 > amps ocpd). On the opposite end of the 400 amp panel there are main lugs > which will be used to feed the generator transfer switch, essentially, > because the inspector says we cannot put more than "two in, one out" on > the gentran. These wires to the gentran are what I am wondering how best > to size. Common sense tells me they should be rated the same as the main > panel breaker from the utility. Is this a correct assumption? > > >> Esteemed wrenches, >> We're working often in the Bahamas and now that net metering is >> approved there, the inspectors are far behind in their comprehension. >> That said, we are currently required to combine the utility with the >> PV in a main load center before going to the generator transfer >> switch. I have a 400 amp rated load center with a 200 amp, 120/208 >> main breaker on it, as well as four 60 a, 3 pole breakers that will be >> fed from four >> 10 kw inverters. My question is, will it be necessary to use wire >> rated at 400 amps or can I use wire rated for the main breaker? Thank >> you for your input. It might be a stupid question, but I am stymied >> here....it might just be the Lyme, not sure.....oh, and it's CEC 2015 >> down there, but I suspect it will align with NEC 2014. >> >> Thanks again, >> Daryl DeJoy >> NABCEP Certified PV >> Penobscot Solar Design >> >> _______________________________________________ >> 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.htm > l > > 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 > > _______________________________________________ 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
