Re: [RE-wrenches] wrenches] Short Circuit Cell Damage
If you cut them one at a time, it won't hurt the cutters, but you can get a good shock. Cutting is not that difficult, but the stripping can be a bit dicey. At 07:46 PM 9/18/2012, you wrote: Content-Type: multipart/alternative; boundary==_NextPart_000_00CC_01CD95D6.8DC9B940 Content-Language: en-us If you cut them during the day, under sunlight conditions it can do bad things to the wire cutters. Been there before, Bob Ellison From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of john Sent: Tuesday, September 18, 2012 1:43 PM To: re-wrenches@lists.re-wrenches.org Subject: Re: [RE-wrenches] wrenches] Short Circuit Cell Damage Mark, As far as cutting the jumper for us nightowls, it is easy. Wait until dark. The sun actually turns off every day!. And for the new people on the block, polarity can still be determined after dark. All you need is a microvolt to get polarity. John CV Solar -Original Message- From: benn kilburn mailto:b...@daystarsolar.cab...@daystarsolar.ca To: RE-wrenches mailto:re-wrenches@lists.re-wrenches.orgre-wrenches@lists.re-wrenches.org Sent: Tue, Sep 18, 2012 1:48 am Subject: Re: [RE-wrenches] Short Circuit Cell Damage Mark, Shorting the string should not be an issue. Unless you work at night, obviously there will be an arc when you cut the jumper, so remember to cover the whole string with an opaque covering beforehandÂ… I think I remember reading that somewhere?!?! Or just be careful, try to do it when the irradiance is low (less current), separate the cut wires quickly and make sure you have left enough wire in the box so that you are not working with short (and energized) wires in a metal box. put a wire nut on one wire while you handle and terminate the other. A safer method, if possible, would be to leave an easily accessible module interconnection un-connected until you have terminated the home run (+)(-), then go back and make the final module interconnection. Cheers, benn DayStar Renewable Energy Inc. http://www.daystarsolar.ca/www.daystarsolar.ca * Ph: 780-906-7807 Construction Electrician Solar Photovoltaic Systems Certified Certificate # 0007S HAVE A SUNNY DAY On 17/09/12 9:50 PM, Mark Frye mailto:ma...@berkeleysolar.comma...@berkeleysolar.com wrote: Wrenches, True or False: In a nominal sort of grid tied situation with string Voc at about 300 VDC and Isc at about 6 or 7 amps..It is OK to install modules on a roof in the sun and short the pos and neg together indefinitely. In other words modules can handle operating at Isc continuously without damage. It is only if you get localized shading AND a failed bypass diode that damaging hot spot heating can lead to failure? I am reviewing an installation manual that recommends completing the home run by connecting the pos and neg of the string with a single jumper cable, folding the cable on itself in order to push it through to a j-box and at some point later on, cutting the jumper in the j-box to terminate the pos and negs to the home run. I am concerned both about maintaining the string in a short circuit condition and cutting the jumper while energized. Any thoughts? Mark Frye Berkeley Solar Electric Systems ___ List sponsored by Home Power magazine List Address: mailto:RE-wrenches@lists.re-wrenches.orgRE-wrenches@lists.re-wrenches.org Options settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.orghttp://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.orghttp://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: http://www.re-wrenches.org/etiquette.htmwww.re-wrenches.org/etiquette.htm Check out participant bios: http://www.members.re-wrenches.org/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 ___ 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] Eco Gen
Hi John We've been having great service from Gillette Generators out of Indiana Greg Kolber is the rep he's very helpful From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of john Sent: Tuesday, September 18, 2012 12:29 PM To: re-wrenches@lists.re-wrenches.org Subject: [RE-wrenches] Eco Gen Wrenches My trusted Kohler dealer recently passed away and now that I don;t have a good source of generators and service expertise to draw on, I am once again entertaining the thought of selling the Generac Eco-Gen. Their PR makes it sound like they have a great new generator for the off-grid market. I am looking for comments/ experience with the new generator. I have always tried to have and use most of what I sell but I already have two generators at home that work great. I have several new off-grid customers asking me for suggestions. I also have an aging Kohler 8.5 (2300 hours- but running very well) ) on a mouintaintop transmitter I service which may need some help down the road. Any generator related comments appreciated. John Blittersdorf NABCEP Certified Solar PV Installer tm Central Vermont Solar Wind LLC 104 River Street Rutland, VT 05701 ___ 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] Eco Gen
John, I continue to have good service with the EcoGen. I managed to burn mine up in a fire in May, due to factors completely unrelated to the unit. Our homeowner's insurance covered full replacement, and I chose the same model again for my own home. This is the only Generac unit that I recommend, based on historic experiences of others. It's quite robust in design and build details. A limitation is that it's only currently available as a 6kW unit, either straight 120V (default) or 120/240. Mine could run fine above altitude-derated maximum output, which is important with an Outback VFX inverter. It's a bit more expensive than Kohler's 8.5, and much less than the few water-cooled 1800 RPM units still made, such as Gillette's (I think). Allan Allan Sindelar al...@positiveenergysolar.com NABCEP Certified Photovoltaic Installer NABCEP Certified Technical Sales Professional New Mexico EE98J Journeyman Electrician Founder and Chief Technology Officer Positive Energy, Inc. 3209 Richards Lane (note new address) Santa Fe, New Mexico 87507 505 424-1112 www.positiveenergysolar.com On 9/18/2012 11:29 AM, john wrote: Wrenches My trusted Kohler dealer recently passed away and now that I don;t have a good source of generators and service expertise to draw on, I am once again entertaining the thought of selling the Generac Eco-Gen. Their PR makesit sound like they have a great new generator for the off-grid market. I am looking for comments/ experience with the new generator. I have always tried to have and use most of what I sell but I already have two generators at home that work great. I have several new off-grid customers asking me for suggestions. I also have an aging Kohler 8.5 (2300 hours- but running very well) ) on a mouintaintop transmitter I service which may need some help down the road. Any generator related comments appreciated. John Blittersdorf NABCEP Certified Solar PV Installer tm Central Vermont Solar Wind LLC 104 River Street Rutland, VT 05701 ___ 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] Eco Gen
I've been moving a fair number of Marine grade diesel units. but still prefer Kohler for the propane crowd. dbDan BrownFoxfire Energy Corp.Renewable Energy Systems(802)-483-2564www.Foxfire-Energy.comNABCEP #092907-44 Original Message Subject: Re: [RE-wrenches] Eco Gen From: Allan Sindelar al...@positiveenergysolar.com Date: Wed, September 19, 2012 6:45 pm To: RE-wrenches re-wrenches@lists.re-wrenches.org John, I continue to have good service with the EcoGen. I managed to burn mine up in a fire in May, due to factors completely unrelated to the unit. Our homeowner's insurance covered full replacement, and I chose the same model again for my own home. This is the only Generac unit that I recommend, based on historic experiences of others. It's quite robust in design and build details. A limitation is that it's only currently available as a 6kW unit, either straight 120V (default) or 120/240. Mine could run fine above altitude-derated maximum output, which is important with an Outback VFX inverter. It's a bit more expensive than Kohler's 8.5, and much less than the few water-cooled 1800 RPM units still made, such as Gillette's (I think). Allan Allan Sindelar al...@positiveenergysolar.com NABCEP Certified Photovoltaic Installer NABCEP Certified Technical Sales Professional New Mexico EE98J Journeyman Electrician Founder and Chief Technology Officer Positive Energy, Inc. 3209 Richards Lane (note new address) Santa Fe, New Mexico 87507 505 424-1112 www.positiveenergysolar.com On 9/18/2012 11:29 AM, john wrote: Wrenches My trusted Kohler dealer recently passed away and now that I don;t have a good source of generators and service expertise to draw on, I am once again entertaining the thought of selling the Generac Eco-Gen. Their PR makesit sound like they have a great new generator for the off-grid market. I am looking for comments/ experience with the new generator. I have always tried to have and use most of what I sell but I already have two generators at home that work great. I have several new off-grid customers asking me for suggestions. I also have an aging Kohler 8.5 (2300 hours- but running very well) ) on a mouintaintop transmitter I service which may need some help down the road. Any generator related comments appreciated. John Blittersdorf NABCEP Certified Solar PV Installer tm Central Vermont Solar Wind LLC 104 River Street Rutland, VT 05701 ___ 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 ___ 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
