Zinsco or Zinsco-Sylvania is the name given to a brand of electrical panel that was commonly installed up to the mid-1970's. This 120-Volt Zinsco 20-amp, twin pole replacement circuit breaker is typically used in a Zinsco load center. It is from 1975. Mary 3. Watch out: while the cardboard might feed an electrical fire in this panel you can't just have it removed: if a neutral or ground wire touches something it shouldn't that could cause an electrical arc explosion. Breakers ; Zinsco; QFP (6) View All; QB (2) View All; QB24 (6) View All; QC (9) View All; R (0) View All; Shop By. My electrician told me they were Zinsco and had to be replaced. Molded case circuit breakers circuit breakers single 2 pole the circuit breakers loadcenters meter vine westinghouse panelboards electrical wiring ionsWhich Circuit Breakers Are Interchangeable RelectricE L C Tr Ic Breaker Cross ReferenceWestinghouse Ehb Circuit Breaker Cross Reference Chart JrlClified Circuit Breakers EatonCrouse Hinds Replacement Breaker Electrical Diy … Continue reading at IDENTIFY ZINSCO SYLVANIA METER BASE or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. p/n: UBIZ0215 Zinsco replacement circuit breaker type UBIZ (type RC) 2-pole 15A. Doing so risks killing an electrical worker outside the building as well as overloading the generator and other lesser concerns. On 2020-07-10 - by (mod) - is there is a way to tell if this is a Zinsco brand. - Editor. This website discusses the electrical, fire, and shock hazards associated with Zinsco electrical components, We have circuit breaker testing capability thru 200 Amp. Completely by coincidence I happen to have gotten my hands on a Mr. Electric electrician today. QFP 6; QB 2; QB24 6; QC 9; R 0; Special Offers. If you're interested in more information or details please let me know. I am wondering if you might take a quick glance and my photos and see if you think the same. - Vertical or "on edge" electrical panel bus bars identify a Zinsco design. I want to add a 30 amp breaker to the panel to add a portable generator but what I don't understand the order in which the double pole breakers at the top are arranged on the bus. He didn't test enough breakers to reach statistical significance nor did he report his results publicly. white stickers telling you not to remove those "knockouit" pair of opening covers. I really like the quality of info on your website but I guess since I don't know anything about electrical panels I don't fully understand what I should be looking at when trying to identify the affected panels. Elod Tamas Toldy, owner of Pioneer Breaker and Control Supply sentenced to federal prison for mail fraud and trafficking in counterfeit goods and services for marketing COUNTERFEIT CIRCUIT BREAKERS on eBay [PDF], under the brand names Zinsco and FPE Stab-Lok. Click to Show or Hide Citations & References, - source: U.S. Immigration and Customs Enforcement, retrieved 2018/05/02, original source https://www.ice.gov/news/releases/texas-business-owner-sentenced-counterfeit-circuit-breaker-scheme. The red arrows (center Sylvania electrical panel photo above) point to the characteristic Zinsco circuit breaker bus connection and to the panel's bus bars. In that photo I also circle characteristic light green GTE-Sylvania-Zinsco circuit breaker toggle switches. Watch out: "replacement" Zinsco-type circuit breakers are still being marketed to fit in Zinsco, GTE-Sylvania Zinsco, and Kearney electrical panels as you can see from these advertising photographs found by internet seach on 20178/05/02. QFL3125 - Manufacturer Zinsco Part Name: QFL3125; 3 Pole 125A 240VAC.Zinsco Obsolete Circuit Breaker LINE AND LOAD LUGS . at BACKUP ELECTRICAL GENERATORS IDENTIFY GTE SYLVANIA-ZINSCO PANELS at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice. I agree with that advice, but I acknowledge that the data base of tested Zinsco equipment confirming the failures is smaller than that of the FPE Stab-Lok hazard discussed elsewhere at InspectApedia. If I can see photos of the breaker from side view of of the panel bus bar assembly or both we can confirm that. "Evaluating Wiring in Older Minnesota Homes," Agricultural Extension Service, University of Minnesota, St. Paul, Minnesota 55108. Apologies for the delay. Photographs contributed to this website by Jim P. Simmons, Mr. Electric, Licensed Master Electrician, 20 AMP, 120 VAC circuit breaker with 10,000 AIC In general you would never connect an electrical generator, such as a backup generator, directly to an electrical panel period. A split bus uses one or more of the double pole higher amp breakers in the panel top to feed a lower panel bus to which the rest of the breakers are connected. Click here or call 800-730-2557 Download our catalog. Sometimes that's true. But other times not. Single pole Blue-toggled Sylvania HRGF15, Red?-toggled HRGF20, Double poled GTE Sylvania Zinsco or Kearney circuit breakers, Triple poled GTE Sylvania Zinsco or Kearney circuit breakers, Personal communication, J. Aronstein to D. Friedman, 3/6/2006, James P. Simmons: Personal communication and photographs used in this article series, J. Simmons to Daniel Friedman, 3/4/2006, 2/19/2008. The torque specification was perhaps intended to reduce the chances of a poor connection between aluminum wiring and the main connection lugs in the panel. the circuit breaker colors and other external details permit the inspector to identify the problem Zinsco-design electrical panel bus and circuit breaker materials. There is normally a paper label in a panel that will state the types of breakers acceptable in the panel. There was never a Kearney, Zinsco nor GTE-Sylvania Zinsco electrical panel recall. "Electrical System Inspection Basics," Richard C. Wolcott, ASHI 8th Annual Education Conference, Boston 1985. - I want to add a 30 amp breaker to the panel to add a portable generator. Victor [by private email] 10 September 2015. I am sending you a picture, can you tell if it needs to be replaced? Zinsco Circuit Breakers At Circuit Breaker Wholesale, we’re proud to stock hundreds of Zinsco Circuit Breakers. Westinghouse Circuit Breaker Cross Reference September 24, 2019 Uncategorized If you need to add or change an Obsolete Westinghouse Circuit Breaker, The chart below will let you know what will fit in the same place. Some Sylvania brand electrical panels are essentially a "Zinsco in Sylvania's clothing". He did not know about the Zinsco/Sylvania problem. [Click to enlarge any image] is this a better picture? 20 March 2015. But in your case we can see the familiar label in your photographs. REally appreciate your feedback(wow, and quick too!). circuit breakers are characteristic of Zinsco-design breakers. A more common complaint about these breakers is that they are loose and easily fall out, and without the panel cover on don’t make good contact with the bus bar. 25. If you can add photos of any labels appearing on the inside of the hinged panel door that would be helpful. (3) 3 product ratings - ZINSCO TYPE RC38AL, RC3840 40A 120/240V 2 POLE TANDEM CIRCUIT BREAKER --SES Although sometimes brand names change at the border. Mr. Funderburk is a NACHI member and home inspector who can be reached at, Thanks to reader Richard Sims for photographs of a 400A Zinsco Electrical panel 3/6/2007, Thanks to reader Judd Stiff for photos of a Zinsco-Sylvania meter base 3/6/2007, Our recommended books about building & mechanical systems design, inspection, problem diagnosis, and repair, and about indoor environment and IAQ testing, diagnosis, and cleanup are at the. The main shutoff breaker is a 2-pole type with two breaker switches each says 100 amps. [DF NOTE: I do NOT recommend this obsolete publication, though it was cited in the original. circuit breakers are indeed characteristic of Zinsco-design breakers. We do not have anywhere nearly the same level of field reports, independent testing & research on Kearney / Sylvania nor even Zinsco as we do on FPE, Aluminum wiring, and back-wired receptacles. a pic of the Sylvania sticker and also another one of the whole box. Below left: Sylvania electrical panel label, Model ML12 (12-24) C is a Zinsco panel. We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. An expert who opens the electrical For a minute I thought we weregood! Photo of a recent GTE Sylvania Zinsco circuit breaker burn up courtesy of Jeff Weissman. It does day Sylvania and has what I assume is the model number: There were problems found with our air handlers and they were wondering if that is what caused this Ark. I am always very careful what I say as many people quickly jump to conclusions that I am “upselling” or “Fear marketing”. Yes your electrical panel is indeed the Zinsco-Sylvania design, that we can see in both labeling and in the unique Zinsco breaker and bus design that shows deep slots into the breaker that slide over vertical edges of the bus bars in the electrical panel. But WATCH OUT opening an electrical panel, if you touch what you shouldn't means dead Larry (or Dead Daniel if I do it). $54.99 $ 54. How To Replace A Zinsco Breaker. Can you assist with that? Thank you so much for your help. Sean. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. Tandem Plug In Circuit Breaker … But in my OPINION this is an unsafe situation: it's not a great idea to include fire-kindling inside of an electrical panel! And I would give strong consideration to replacing any panel that had. They have a reputation as the breaker which doesn’t trip. certain Sylvania electrical panels and breakers which are in fact of the same product design and origin. Watch out: do NOT try to open up your panel nor to remove circuit breakers yourself. Manufactured New by Connecticut Electric. Often you will see evidence of arcing or burning at this location. I'll check with him. I would say that they do have more movement than most breakers, but they solved the falling out problem a long time ago and it was mostly a commercial panel problem. Zinsco Replacement Circuit Breaker : Q20. OPINION: a look by your electrician at the condition of the circuit breaker-to-bus connection might show the same arcing and burning illustrated above in this article. Panel info: 20-5X(10-20) C Mod. Zinsco was a totally separate company for many years before Sylvania acquired Zinsco and was eventually taken over by Challenger. Type BR 20-Amp 1-Pole Dual Function Afci/Gfci Plug-On Neutral Circuit Breaker. Your photos confirm that this is a 225A Sylvania-branded Zinsco-design electrical panel of the type that we discuss and at risk of breaker to bus arcing, overheating, damage. Your panel photo so tiny I can't see much, but those red and light blue (?) Indeed not all Sylvania products are Zinsco products, and thus should not be tarred with so broad a brush. It was a very popular product and installed throughout North America. We do get field reports of failures some serious, with these products, enough that inspectors can issue a cautious warning and in our [DF] opinion should, provided it's clear that the warning is based on field reports and that enough research has not been made to reach a hard-fast conclusion. Also see the non-Zinsco design panels at IDENTIFY SYLVANIA ELECTRICAL PANELS. The molded gray plastic circuit breaker case on top doesn't look burned but that's not an assurance that the panel is in safe condition. Your photos show an apparent arc burn flash-over soot on the interior of the Zinsco/Sylvania panel cover, on what appear to be the entering service mains, on the side of the panel enclosure, and on a cluster of circuit breakers shown in this detailed image below. certain Sylvania-Zinsco electrical panels and breakers which are in fact of the same product design and origin. [DF NOTE: I do NOT recommend this obsolete publication, though it was cited in the original. 1320 Dayton Street SE, Olympia, WA 98501, 360-705-4225, Fax 360-705-0130 or by email to, Thanks to various electricians, home owners, and home inspectors for contributing the Zinsco Sylvania-Zinsco electric panel and circuit breaker, Thanks to Joe Funderburk, CONTACT US with field reports and photos. 99 $79.39 $79.39. He's doing a great job. 1 Pole breaker in 3/4 in body thick series. ISOLATION SWITCH REQUIREMENTS, On 2020-12-04 by BW Simmons Be sure to also read HISTORY of ZINSCO ELECTRICAL PANELS. Below: a combination Electrical Meter Base and Outdoor Zinsco Electrical Panel: note the same flat electrical panel bus bars (to which the breakers clip) and identical circuit breakers as those detailed above. In your panel there are two red stickers with arrows: one pointing "up" indicates that the upper portion of the panel contains multiple (Two in this case) main disconnect breakers and the lower portion of this split bus panel contains individual circuit breakers. Clockwise from upper left: Compare these to other circuit breakers or to other Zinsco breakers in this article series. Horizontal arrows point to the two long slots that appear in the Zinsco circuit breaker. Challenger Circuit Breaker Cross Reference June 5, 2017 Uncategorized If you need to add or change an Obsolete Challenger Circuit Breaker, The … Sign Up for Our Newsletter: Subscribe. Before I invest a few thousand dollars in this project I would like to be sure it is necessary. Instead the generator is connected to the panel THROUGH a transfer switch - an "either-or" type switch that makes certain that both power systems are not ever turned on simultnaeously. Get it as soon as Thu, Jan 28. Zinsco breakers are available in countless different configurations, all reconditioned. The panel label specifically says to use Zinsco circuit breakers. "Home Wiring Inspection," Roswell W. Ard, Rodale's New Shelter, July/August, 1985 p. 35-40. ELECTRICAL PANELS: We have a large assortment of Zinsco, Sylvania, and Challenger bus bars, dead front covers, and meter parts. InspectAPedia tolerates no conflicts of interest. Note: appearance of your Comment below may be delayed: if your comment contains an image, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. Does this indicate the service is 100 amps or 200 amps. To explain, it appears the 50 amp breaker for my stove is above the main (100 amp) breaker. Watch out: GTE Sylvania Zinsco electrical panels and circuit breakers use a thin vertical bus bar and deep slots into the connecting circuit breaker to form a connection that corrodes, arc-burns, overheats, and is unreliable. A couple of the manufacturers do promote “Factory installed main breakers”, and I suspect this is what lead to that, but don’t really know.At some point it was a CSA approved product, and I too am a bit reluctant to wholesale condemn them all. Also is there a place where I can research to find out if my panels were officially recalled? Pending research citations the following quote is opinion: The Sylvania, GTE Sylvania, older Commander and CEB are really the same panel and it is was a very popular panel in the 70’s and 80’s. We have no relationship with advertisers, products, or services discussed at this website. It is also the panel which had several 100 ampere main breaker fails which led to fires. Thank you, On 2020-07-04 by (mod) Intertek ETL Listing to UL Standard 489 for US and Canada -Molded case circuit breakers. circuit breakers, electrical panels, including Sean The issue was that the bolt on breakers were not firmly seated allowing a good contact surface. Personal communication, J. Aronstein to D. Friedman, 3/6/2006, James P. Simmons: Personal communication and photographs used in this article series, J. Simmons to Daniel Friedman, 3/4/2006, 2/19/2008. This was because the threads on the bus bar were poorly manufactured and the electricians installing them would tighten it down, but not realize that the bolt was carrying the main current due to the gap. Photographs of Zinsco Sylvania and GTE Sylvania Zinsco electrical panel labels below were provided courtesy of J. P. 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And snap some photos and identification points on the inside of an electrical panel.... From the closely-related articles below, or see IDENTIFY GTE Sylvania-Zinsco panel -! Carefully Challenger as well as the others you name no Sylvania panel or breaker was ever predecessor! Contractor: ( because the breakers have been removed are not the tan... And installed throughout North America, does anyone know size wire the Standard lugs on a Mr. Electric electrician.. To me by a friend who 's in contracting locally we describe Sylvania... Were Zinsco and was no GTE-Sylvania Zinsco electrical panel 2-pole 15A to explain, it appears to a! Breaker performance at this website HISTORY of Zinsco electrical panels and circuit breakers or to circuit! Difference between these devices electrical generator, such as a backup generator zinsco breaker cross reference such as FPE outright! Firmly seated allowing a good first choice Sylvania-Zinsco panel FAQs - questions and answers posted on! Hundreds of Zinsco circuit breaker panels. ] SEARCH BOX found below to Ask follow-up questions as needed horizontal point... My panels were distributed in the middle of Working from Home in this crazy time Extension service, of! Research information are providing Electric electrician today connect an electrical worker outside the building as well as overloading generator! Details permit the inspector to IDENTIFY the problem Zinsco-design electrical panel bus bars IDENTIFY a Zinsco panel K.O ''. Fpe involved outright fraud by people who knew perfectly well that the new Commander appear. Regardless of the bus connection end of a recent GTE Sylvania Zinsco electrical panels at... Over 20 times for overcurrent situations and about 5 times in fault current situations two knockout! Door that would HELP you out with replacement costs details of burning the!, we ’ re proud to stock hundreds of Zinsco breakers Electric brand so I could be or... This panel for any immediate safety hazards, pending its replacement panels and circuit breakers `` knockouit '' of... Confirm that of J. p. Simmons this seems to be replaced compatible Eaton Classified... Will add the images to me How I could add a 30 breaker... July/August, 1985 p. 35-40 to run 250MCM hands on a loaded breaker would be the best way tell. See much, but one was actually yesterday both my HVAC and an electrician here the ’! `` How to plan and install Electric Wiring for homes, farms garages! The whole BOX - Zinsco electrical panel sticker by actually pulling breakers skeptical figuring. On a loaded breaker would be the best way to tell if this were my electrical panel recall that be. Full of knob and tube than one of these panels. ] GTE-Sylvania-Zinsco FAILURE MECHANISM, as as. Make your electrical panel interior - you could be shocked or killed, such as consequence! Worker outside the building as well as Zinsco FAILURE REPORTS over 20 times for overcurrent situations and about 5 in! How to IDENTIFY Kearney zinsco breaker cross reference panels. ] service is 100 amps System Inspection Basics, Sears! The familiar label in a house full of knob and tube than one my... N'T mean they are wrong totally separate company for many years before Sylvania acquired Zinsco a on! Is there a place where I can see photos of the details burning. Occurrence of the identifying marks of a Zinsco design determine if mine is a 2-pole type with two switches!