Wrenches, The issue of UL Listed meters is becoming a frequent problem for RE integrators. I ditto what Hans said about not finding a listing.
What I've seen so far is that Socket based meters are generally NOT listed by the mfrs since the primary users are utilities and, therefore, listing is not a "requirement". Even the very expensive super-feature socket-based meters are not listed and the mfrs (so far) aren't planning to list them. This applies to self-contained and instrument rated socket-based meters. Many panel-style meters are UL listed. One example is the ION 6200 http://www.powerlogic.com/literature/PowerLogic%20ION%206200%203000BR606R100 9.pdf Panel-style meters are commonly listed as Power Circuit and Motor-mounted Apparatus (NMTR), which is a subcategory of UL 508 Industrial Control Equipment. General information on this sub category is found here: http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/showpage.html?&nam e=NMTR.GuideInfo&ccnshorttitle=Power+Circuit+and+Motor-mounted+Apparatus&obj id=1074108450&cfgid=1073741824&version=versionless&parent_id=1073990288&sequ ence=1 The crazy piece of this listing is that the description lists all kinds of devices EXCEPT meters as applicable. ??? The bonehead stupidity of this situation is that, in order to gain ANSI C12 certification, socket-based meters have to pass some really harsh withstand tests due to their usual proximity to the grid. Ergo, they are <<probably safe>> for our purposes. What may not be readily apparent is that the defacto industry-standard for ANSI C12 is for the mfr to self-certify. Which means they generally don't have 3rd party testing & listing. I have seen just a couple cases where the AHJ has required UL Listing initially, but backed down when presented with the ANSI docs and pointed to the identical meter in use by the utility themselves. The more common result I'm seeing is that the AHJs are digging in their heels and requiring Listings. Best of luck! -----Original Message----- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Hans Frederickson Sent: Monday, July 26, 2010 1:47 PM To: 'RE-wrenches' Subject: [RE-wrenches] UL Listing for meter I scanned the UL White Book and did not find a category listing for bolt-in or plug-in type watt-hour meters. There are several categories for the meter sockets. If UL hasn't taken it on, I can't imagine that anyone has paid any other NRTL to evaluate equipment that typically doesn't require a listing. I have heard of AHJ's waiving the listing requirements for equipment when no standard exists... I would suggest to the AHJ that there is no listing for watt-hour meters so this requirement is impossible to meet. Regards, -Hans -----Original Message----- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Peter Parrish Sent: Monday, July 26, 2010 12:19 PM To: 'RE-wrenches' Subject: [RE-wrenches] Congested Panel Problem This inspector also has a problem with the production meter we installed. He wanted to see the "UL Listing" on the meter. I called Austin International (our vendor) about the meter in question (Itron Centron C1S) and they said that UL doest test meters as they (normally) are not used on the customer side of the service. Is there another listing for meters that would satisfy a nit-picky inspector? To make matters worse, we now have in stock both Itron Centron C1S meters as well as Schlumberger Centron C1S meters. Did Schlumberger buy out Itron? Or vice versa? Any help on the main panel calculation and acceptable listings for meter would be greatly appreciated. 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 _______________________________________________ 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
