I am sorry to hear that folks are having these kinds of problems. As I understand it, only module types made up of back contact cells such as the SunPower are run with positive ground.
These modules actually require positive ground to reduce static charge build up on the front of the cell which can reverse bias and shut down the module. I don't know, but it seems to me that folks have somehow mixed up the high yield of the back contact cell with positive grounding so now positive grounding will increase the yeild other types of cells. Do I have the story about right? Running front contact cells that have plenty of collection wire on the face on a positive ground will not significantly increase yield over a negative ground. Are there other benefits to running positive ground that I am not aware of? Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Doug Pratt Sent: Saturday, September 20, 2008 5:25 PM To: 'RE-wrenches' Subject: Re: [RE-wrenches] evergreen panels diode problems Jay, there was a bulletin from Evergreen earlier this year about their modules being used in positive ground systems. I don't remember the exact details (and I'm not at work now), but the gist was avoid positive ground till we make some modifications. Please check w/Evergreen on Monday. -Doug Pratt _______________________________________________ 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
