HI Peter, I"m wondering that since the insulation isn't needed at all, wouldn't that negate the need for -2?
thanks, jay peltz power On Jan 14, 2011, at 11:04 AM, Peter Parrish wrote: > Great idea Kelly! I didn't know one could get green jacketed USE or XHHW. Do > you have a source? Also, do you think that we might need wire rated "-2" for > 90 deg C wet locations. I know that this is not a current carrying > conductor, but roof tops are definitely 90 deg C wet environments. Your > thoughts? > > - Peter > > > Peter T. Parrish, Ph.D., President > California Solar Engineering, Inc. > 820 Cynthia Ave., Los Angeles, CA 90065 > CA Lic. 854779, NABCEP Cert. 031806-26 > peter.parr...@calsolareng.com > Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 > > > -----Original Message----- > From: re-wrenches-boun...@lists.re-wrenches.org > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kelly > Keilwitz, Whidbey Sun & Wind > Sent: Friday, January 14, 2011 10:14 AM > To: RE-wrenches > Subject: Re: [RE-wrenches] Incompatible Metals > > Peter, > I have never understood the common practice of using bare copper > ground wire on and against aluminum frames and modules. It always has > been a dissimilar metals issue. Just look anywhere copper has set > against aluminum for awhile. > We use #10 green jacketed Cu USE or XHHW conductor and strip away the > jacket at each lug, using No-Ox on that section of bare wire at the > lug. The wire can be tucked in to the module frames and with the PV > conductors. > > Kelly Keilwitz, P.E. > Whidbey Sun & Wind > Renewable Energy Systems > ke...@whidbeysunwind.com > 360-678-7131 > _______________________________________________ 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
