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 < [email protected]> 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 > [email protected] > Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 > > > ________________________________________ > From: [email protected] > [mailto:[email protected]] 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 > [email protected] > www.legacysolar.com > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > 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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