Re: [RE-wrenches] GT inverter
Jay, I'm not sure as far as external disconnects. In the handful that we have installed, we have been able to use the integrated disconnects. Could you use a standard DC double-pole double-throw and run the + and - through each pole? On Sun, Nov 20, 2011 at 3:36 PM, jay peltz j...@asis.com wrote: HI mac, I like this choice also. But what is on the market for a TL fused disco? jay On Nov 20, 2011, at 1:59 PM, mac Lewis wrote: I would see if the Aurora 6000 would be a good fit. I believe it will string but it may clip depending on tilt, orientation and anticipated temps. Mac On Sun, Nov 20, 2011 at 2:44 PM, jay peltz j...@asis.com wrote: Hi All, Anybody have a favorite string GT inverter for the following. 6700 watts 30 x sanyo 225 watt no shading 240v output thanks, jay peltz power ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 -- Mac Lewis * Yo solo sé que no sé nada. -Sócrates * ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 -- Mac Lewis * Yo solo sé que no sé nada. -Sócrates * ___ List sponsored by Home Power magazine List Address: RE-wrenches@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
Re: [RE-wrenches] GT inverter
Hey Jay- Schneider/Square D does make a fusible, 4-pole, 30 A, 600 Vdc disco, allowing you to fuse and double-break both the positive and negative, but I have a feeling it is quite pricey. Should be model number H461x, depending on the NEMA category you require. Brian On Sun, Nov 20, 2011 at 5:36 PM, jay peltz j...@asis.com wrote: HI mac, I like this choice also. But what is on the market for a TL fused disco? jay On Nov 20, 2011, at 1:59 PM, mac Lewis wrote: I would see if the Aurora 6000 would be a good fit. I believe it will string but it may clip depending on tilt, orientation and anticipated temps. Mac On Sun, Nov 20, 2011 at 2:44 PM, jay peltz j...@asis.com wrote: Hi All, Anybody have a favorite string GT inverter for the following. 6700 watts 30 x sanyo 225 watt no shading 240v output thanks, jay peltz power ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 -- Mac Lewis * Yo solo sé que no sé nada. -Sócrates * ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 -- Brian Mehalic NABCEP Certified Solar PV Installer™ R031508-59 IREC ISPQ Certified Affiliated Instructor/PV US-0132 PV Curriculum Developer and Instructor Solar Energy International Carbondale, CO 81623 http://www.solarenergy.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@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
Re: [RE-wrenches] GT inverter
Hi Brian, I just found on Midnite's site a brand new set of combiners that do the job, very cool, can be configured in multiple ways! For the size I was looking at it would need 3 strings, ( 5+ amps per string, 15 series fused rating) So as I understand it, I've got to install fusing, which means that I'd need 2 of those expensive discos. So usual that the manufactures are not providing the equipment to do the install. I have to say, given the confusion for this hook up, I might opt for the tried and true sma. Thanks all for your imput. Jay Peltz power Sent from my iPad On Nov 21, 2011, at 7:10 AM, Brian Mehalic br...@solarenergy.org wrote: Hey Jay- Schneider/Square D does make a fusible, 4-pole, 30 A, 600 Vdc disco, allowing you to fuse and double-break both the positive and negative, but I have a feeling it is quite pricey. Should be model number H461x, depending on the NEMA category you require. Brian On Sun, Nov 20, 2011 at 5:36 PM, jay peltz j...@asis.com wrote: HI mac, I like this choice also. But what is on the market for a TL fused disco? jay On Nov 20, 2011, at 1:59 PM, mac Lewis wrote: I would see if the Aurora 6000 would be a good fit. I believe it will string but it may clip depending on tilt, orientation and anticipated temps. Mac On Sun, Nov 20, 2011 at 2:44 PM, jay peltz j...@asis.com wrote: Hi All, Anybody have a favorite string GT inverter for the following. 6700 watts 30 x sanyo 225 watt no shading 240v output thanks, jay peltz power ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 -- Mac Lewis Yo solo sé que no sé nada. -Sócrates ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 -- Brian Mehalic NABCEP Certified Solar PV Installer™ R031508-59 IREC ISPQ Certified Affiliated Instructor/PV US-0132 PV Curriculum Developer and Instructor Solar Energy International Carbondale, CO 81623 http://www.solarenergy.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@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
Re: [RE-wrenches] GT inverter
SMA makes a fused combiner specifically for their TL line of inverters as well. -Glenn From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of jay peltz Sent: Monday, November 21, 2011 11:07 AM To: RE-wrenches Subject: Re: [RE-wrenches] GT inverter Hi Brian, I just found on Midnite's site a brand new set of combiners that do the job, very cool, can be configured in multiple ways! For the size I was looking at it would need 3 strings, ( 5+ amps per string, 15 series fused rating) So as I understand it, I've got to install fusing, which means that I'd need 2 of those expensive discos. So usual that the manufactures are not providing the equipment to do the install. I have to say, given the confusion for this hook up, I might opt for the tried and true sma. Thanks all for your imput. Jay Peltz power Sent from my iPad On Nov 21, 2011, at 7:10 AM, Brian Mehalic br...@solarenergy.org wrote: Hey Jay- Schneider/Square D does make a fusible, 4-pole, 30 A, 600 Vdc disco, allowing you to fuse and double-break both the positive and negative, but I have a feeling it is quite pricey. Should be model number H461x, depending on the NEMA category you require. Brian On Sun, Nov 20, 2011 at 5:36 PM, jay peltz j...@asis.com wrote: HI mac, I like this choice also. But what is on the market for a TL fused disco? jay On Nov 20, 2011, at 1:59 PM, mac Lewis wrote: I would see if the Aurora 6000 would be a good fit. I believe it will string but it may clip depending on tilt, orientation and anticipated temps. Mac On Sun, Nov 20, 2011 at 2:44 PM, jay peltz j...@asis.com wrote: Hi All, Anybody have a favorite string GT inverter for the following. 6700 watts 30 x sanyo 225 watt no shading 240v output thanks, jay peltz power ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 http://www.members.re-wrenches.org/ -- Mac Lewis Yo solo sé que no sé nada. -Sócrates ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 -- Brian Mehalic NABCEP Certified Solar PV Installer™ R031508-59 IREC ISPQ Certified Affiliated Instructor/PV US-0132 PV Curriculum Developer and Instructor Solar Energy International Carbondale, CO 81623 http://www.solarenergy.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@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
Re: [RE-wrenches] Code reviewer issue with array disconnect location
Thanks to all who replied with code references. I think we have put up a good argument and refuse to re-locate the five separate combiner boxes down at eye level on the top parking area of a student parking deck. Just an accident waiting to happen. However, in researching this issue I noted that the 2008 code and the comments I am hearing about the 2011 code still are not clear about combiner box requirements. I agree with Bill Brooks that on single array residential systems it does not make sense to put the combiner box on top of the roof and require a ladder to access, but on large commercial systems where there are already multiple code required disconnects that are required to be accessible, I still think its best for the installer and for system maintenance to have a disconnect mounted in the cover or right beside the combiner box at each array on multiple array systems. Jeff Yago DTI Solar Inc. ___ List sponsored by Home Power magazine List Address: RE-wrenches@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
Re: [RE-wrenches] GT inverter
Jay, If you use the Aurora 6000, it has two separate MPPT channels, and each channel has dual input lugs, so you could have up to four PV strings without any needed fusing (two strings per channel). On the 6000, the max input power per channel is 4kW, so you can't just put two strings of 10 modules on one channel (20 x 225W = 4500W), but you could use four strings, with, say 16 modules on one channel (two strings of 8 for 3600W ) and 14 modules on the other channel (two strings of 7 for 3150W ). The Aurora inverters have an adjustable input voltage range that will go all the way down to about 90VDC and still power-point track, so strings of 7 are no problem, even with regular 60-cell modules. There is some loss of efficiency at the lower voltages, but it's minor. 30 of the Sanyo 225's might be a bit high for a 6kW inverter however, so you may want to use two smaller Aurora inverters instead of a single 6000. You will need to analyze how much clipping you might get at the location, and see if the lost wattage is worth the extra cost of using two inverters. Personally, I don't think that an array at 6750W on a 6kw inverter will really see all that much clipping, unless it's in a cold climate. I doubt that the extra cost of using two smaller inverters would be justified. Brian Teitelbaum AEE Solar From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of jay peltz Sent: Sunday, November 20, 2011 2:36 PM To: RE-wrenches Subject: Re: [RE-wrenches] GT inverter HI mac, I like this choice also. But what is on the market for a TL fused disco? jay On Nov 20, 2011, at 1:59 PM, mac Lewis wrote: I would see if the Aurora 6000 would be a good fit. I believe it will string but it may clip depending on tilt, orientation and anticipated temps. Mac On Sun, Nov 20, 2011 at 2:44 PM, jay peltz j...@asis.commailto:j...@asis.com wrote: Hi All, Anybody have a favorite string GT inverter for the following. 6700 watts 30 x sanyo 225 watt no shading 240v output thanks, jay peltz power ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.orgmailto:RE-wrenches@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.htmhttp://www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.orghttp://www.members.re-wrenches.org/ -- Mac Lewis Yo solo sé que no sé nada. -Sócrates ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.orgmailto:RE-wrenches@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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@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
Re: [RE-wrenches] Code reviewer issue with array disconnect location
Hi Jeff; The new combiner boxes from Midnite are interesting for this application too, as they offer a single external disconnect built into the side of each combiner box. They can later be easily upgraded with Midnite's new arc fault protection and remote disconnect. One simple signal switch (the Bird House) can be mounted at a readily accessible location on the ground and can turn off all the combiner boxes in a single push of a button. All those long DC runs down to the inverter would be de-energized, and thus an unfamiliar fire fighter doesn't have to crawl around on the roof with a map trying to find every combiner. I think its the way we need to be moving for safety on all PV systems, it also would solve your current issue, without relocating all the combiner boxes. Ray On 11/21/2011 5:25 PM, Jeff Yago wrote: Thanks to all who replied with code references. I think we have put up a good argument and refuse to re-locate the five separate combiner boxes down at eye level on the top parking area of a student parking deck. Just an accident waiting to happen. However, in researching this issue I noted that the 2008 code and the comments I am hearing about the 2011 code still are not clear about combiner box requirements. I agree with Bill Brooks that on single array residential systems it does not make sense to put the combiner box on top of the roof and require a ladder to access, but on large commercial systems where there are already multiple code required disconnects that are required to be accessible, I still think its best for the installer and for system maintenance to have a disconnect mounted in the cover or right beside the combiner box at each array on multiple array systems. Jeff Yago DTI Solar Inc. ___ List sponsored by Home Power magazine List Address: RE-wrenches@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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@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
