For the first time since 2004 we got a residential PV red tag for non-listed surge supressors. I just took them off and replaced them after we got the green tag. Of course he also red-tagged the copper ground plate because it was not thick enough. Go figure....
Jim Duncan North Texas Renewable Energy -----Original Message----- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org]on Behalf Of Andrew Truitt Sent: Tuesday, August 31, 2010 8:09 PM To: RE-wrenches Subject: Re: [RE-wrenches] Testing LSAs Question: Since the Delta lightning arrestors are not UL Listed, do they threaten the UL compliance of the PV system as a whole? - Andrew Truitt Currently of Standard Solar Free agent in the Denver area as of 10/6/10 On Tue, Aug 24, 2010 at 6:02 PM, Peter Parrish <peter.parr...@calsolareng.com> wrote: I would think that an ohmmeter set to the 10 Mega-ohm setting (or the highest setting possible), would be the first test. I would like to see something on the order of 750 k-ohms (3/4 of a mega-ohm). But the system should be tested at a higher voltage, than that available from a DMM. Apply 240 Vac and measure the RMS current. It should be should be 0.3 mA or less. Finally, these puppies really need to be tested at much higher voltages, perhaps someone knows how to use that megohmmeter to test? What does the manu recommend, “if suspect, throw it away and buy a new one”? - 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 ________________________________________ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kristopher Schmid Sent: Tuesday, August 24, 2010 1:30 PM To: 'RE-wrenches' Subject: [RE-wrenches] Testing LSAs What is the best method for testing the integrity of a DC and/or AC lightning surge arrestor? Specifically, i use the Delta LA units. I know they should be replaced if they look Bar-B-Qued, but otherwise...? Thanks, Kris Schmid Legacy Solar 864 Clam Falls Trail Frederic, WI 54837 715-653-4295 sol...@legacysolar.com www.legacysolar.com _______________________________________________ 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 -- "Don't get me wrong: I love nuclear energy! It's just that I prefer fusion to fission. And it just so happens that there's an enormous fusion reactor safely banked a few million miles from us. It delivers more than we could ever use in just about 8 minutes. And it's wireless!" ~William McDonough
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