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. Well I am in the middle of Working From Home in this crazy time! "Home Wiring Inspection," Roswell W. Ard, Rodale's New Shelter, July/August, 1985 p. 35-40. But in your case we can see the familiar label in your photographs. I would like to verify the bus rating of my house panel the only label that I have is what is attached in the photos Here I'll post a closer-view excerpted from your photo. In 1973, GTE-Sylvania (same owners of Zinsco) introduced their own panel and breaker design. Never insert any tool nor your fingers into the interior of an electrical panel. Other Zinsco electrical panel identification and information labels are included in this article. Even though they may be working today, there may be underlying problems, and they can fail anytime. Replacing a Zinsco breaker panel is often worth it, as the older panels can be unreliable and may not meet current safety codes. 2, 225AMPS Max. No votes so far! There are inherent problems in the bus bars of the panel and the materials used for their manufacturing. But Home inspectors often call out the dangers of a Zinsco style panel during a home inspection. On 2021-08-21 The details to which we point are unique to Zinsco. Thanks again *and* in advance after I get more pix! zinsco still make 35 amp breakers? Understanding the Zinsco failure mechanism is pertinent and is discussed in this article series. Joe's advice is in our opinion bad and unsafe. I also Googled Images for Federal Pacific Electric Panels, and the photos of burned out panels were horrifying. Most of the Zinsco electrical panels and circuit breakers were installed in the 1960s and 1970s. Experts report that Federal Pacific Electric (FPE) circuit breaker panels may have three major faults that could pose a danger: 1.) Are you able to determine this from the attached pictures? [DF NOTE: I do NOT recommend this obsolete publication, though it was cited in the original. Watch out: do NOT try to open up your panel nor to remove circuit breakers yourself. 3. Brief History of Zinsco Emile Zinsmeyer started Zinsmeyer Co right after the stock market crash of 1929. This Zinsco-Sylvania-GTE electrical panel label specifies. They named their product "Challenger". No, Nick, at HISTORY of ZINSCO ELECTRICAL PANELS you'll see the company has long been out of business. Still, if your electrical panel uses the circuit breakers listed here it may be a Zinsco design. The Zinsco panel may be under the name of Sylvania, GTE-Sylvania or Kearney. --- "Home Wiring Inspection," Roswell W. Ard, Rodale's New Shelter, July/August, 1985 p. 35-40. Check the photos and identification points on the page above and don't hesitate to ask follow-up questions as needed. According to experts, zinsco panels malfunction for two reasons: Design Flaws Electricians have observed that there are indeed design flaws in the Zinsco circuit breaker panels. A Zinsco panel is a good example of such an electrical panel. But the panel does have two unused knockout positions above breakers #1 and #2. panel or performs further disassembly (DANGER) can further identify the characteristic circuit breaker details but the circuit breaker Why GFCI Outlets have a Blinking Red Light? 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. I would GREATLY VALUE your opinion. Due to the deficiencies found in these panels and the adverse effects the panels can cause, Zinsco electrical panels should be replaced. 112. r/solar. There were a few still being installed later, but they are rare. But Watch out: opening an electrical panel, if you touch what you shouldn't means dead Larry (or Dead Daniel if I do it). However, no inspector should ignore the numerous cases of Zinscos breakers going bad. - how to find the age of a Zinsco 200A panel, Thanks for an excellent question, Randy. REally appreciate your feedback(wow, and quick too!). US $19.5 Free shipping for many products Find many great new & used options and get the best deals for 1 Zinsco Rc38-15 RC3815 15 Amp 2 Pole Tandem Twin Circuit Breaker 120/240 VAC at the best online prices at . The Zinsco panels may work for years, but there is an underlying threat as homes have increased energy demands, these panels may overheat and breaker failure can occur. We include photos of Zinsco breaker labels and other markings that identify Zinsco and Kearney electrical equipment. 4-77 1977 [Lots of sketches of older-type service panels.]. Replacement is not, in this case, recommended. "Basic Housing Inspection," US DHEW, S352.75 U48, p.144, out of print, but is available in most state libraries. By 1961 Zinsco had switched to an aluminum alloy still used today in their manufacture of panels and load-center busing. (Photos below), Shown above in a very crowded collection of circuit breakers we see two-pole Zinsco RC half-sized breakers in three different amperages. @Robert shaner, [see IDENTIFY KEARNEY PANELS]and was not aware that Zinsco made combination residential panels. 1. Ok, I see, the panel label has the language you spotted. Be sure to also read HISTORY of ZINSCO ELECTRICAL PANELS. And I would give strong consideration to replacing any panel that had. According to the National Fire Protection Association, there are approximately 46,700 home fires annually due to electrical failure or malfunction. Research is underway. 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. Thanks again! 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, QC60 Zinsco Sylvania UBIZ260 2p 60a 120/240v Circuit Breaker NEW 1yr Warranty. It seems that the problems stem from aluminum parts within the panel. Note: appearance of your Comment below may be delayed: if your comment contains an image, photograph, 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. They have been receiving more claims related to such homes, so they are listed as a possible liability. Cost to Replace a Zinsco-Sylvania Electrical Panel? Try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly. Sylvania/zinsco Panel Cover Dead Front | eBay Challenger Panel Cover Dead Front Sylvania/zinsc o Panel Cover Dead Front Condition: Seller refurbished "Panel cover/dead front refurbished to "like new" condition." Price: US $70.00 Buy It Now Add to cart Add to Watchlist Returns accepted Ships from United States Shipping: This was used as a temp panel for 3 months on a job. InspectAPedia tolerates no conflicts of interest. 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. CONTACT US with field reports and photos. Be the first to rate this post. I am sending you a picture, can you tell if it needs to be replaced? 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. One's the SE with the cover open, next is a close up of the breakers (look at the 125 A main): Here's the 125 A breaker removed: I understand the home is getting a completely new SE panel. Zinsco breakers were frequently labeled with the name Zinsco Magnetrip breakers. Zinsco or Zinsco-Sylvania is the name given to a brand of electrical panel that was commonly installed up to the mid-1970's. It was a very popular product and installed throughout North America. Zinsco panels are known for being unsafe, as they are prone to overheating and arcing. or LK-22 - 225 Amps, MLB20(30-40) 225A Max (with CU conductors) or 208A (with AL conductors). It is from 1975. I am always very careful what I say as many people quickly jump to conclusions that I am upselling or Fear marketing. - I want to add a 30 amp breaker to the panel to add a portable generator. My electrician told me they were Zinsco and had to be replaced. Thank you for your information. Alpha & Omega Home Inspections, The full size is type Q and the two ploes are type QC. I have an MLB20 (15-30)C indoor mod 2 breaker box, is this prone to problems? 5. Below is a Zinsco HQGF20 GFCI circuit breaker with a black toggle switch. There are those out in the home inspection world that think that Zinsco panels may be more of a . I have a buyer that wants me to put in a new panel because it might be. 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. Just below, the photo of a recent GTE Sylvania Zinsco circuit breaker burn-up is shown here courtesy of Jeff Weissman and observed, he reports, in a GTE-Sylvania electrical panel. Zinsco panels are unsafe, and we urge homeowners to consider a replacement. 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. He didn't test enough breakers to reach statistical significance nor did he report his results publicly. Zinsco R38 This is a tandem 20 amp Circuit Breaker. The half Size is R38 for 1 poles and RC38 for 2 poles. Is my panel safe - FPE. Now required in the 2020 NEC, panel-level surge protection is key for critical circuits that power equipment in residential applications. Frank Adams Electrical panels were installed in buildings in the U.S. roughly between 1900 and 1970. Try posting a larger photo of that detail. Photo 2: A Zinsco panel bus, showing scratch and oxidation marks Photo 3: A Zinsco double pole breaker in-place, with the electrical panel bus exposed Photo 4: A Zinsco breaker side blowout, exposed breaker contact exposed in the electrical panel Photo 5: A Zinsco breaker side blowout-2, exposed breaker contact exposed in the electrical panel We are changing the panel Monday. According to usinspect.com, problems with Zinsco Panels . We have published articles on these other panels in part to solicit field reports & research information. Some history of Unicorn Industries circuit breakers is at. I'd like to have seen a view of the actual circuit breaker from its side or a view of the metal bus bar to which the breakers connect as that will give an absolute identification. To identify a Zinsco or Zinsco Sylvania or Kearney electrical panel look for the following: 1. Rating with LK-15 150 Amps, LK22 225 AMP. Federal Pacific Electric panels were produced from the mid-1950s well into the 1980s. They have a reputation as the breaker which doesnt trip. Watch out: you will also find some 30A - Black toggle Zinsco breakers and 20A black-toggled GFCI breakers that, as you'll see illustrated below on this page. Your panel photo so tiny I can't see much, but those red and light blue (?) An electrician needs to look with care at this panel for any immediate safety hazards, pending its replacement. Instructor- Fundamentals of Home Inspection- Bellingham Technical College. An expert who opens the electrical Do not touch anything inside the panel. Plated aluminum bus bars that get gouged-through when a breaker is inserted (mounting a breaker cuts through the plating and we see corrosion, overheats, failures). 200 amps - $1,300 to $2,600. Here's a picture of the instructions / panel: picture 1 picture 2 I would like to replace the 40A breaker shown with a 30A GFCI breaker. See details of the hazard at ZINSCO SYLVANIA ELECTRICAL PANELS as well as above on this page. Insurance companies have become increasingly cautious when signing insurance for older properties with FPE or Zinsco installed. After hundreds of similar incidents, it was found that Zinsco panels were to blame for frequent electrical shocks, short circuits, and fires. Continue readingat IDENTIFY GTE SYLVANIA-ZINSCO PANELS or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. What are your thoughts about this panel set-up? Please see ELECTRIC PANEL AMPACITY for more detailed help in answering your question. Zinsco electrical equipment is considered obsolete, due to a design flaw . Sean. Clockwise from upper left: Compare these to other circuit breakers or to other Zinsco breakers in this article series. We have an affiliate partnership with Networx. Above: GTE Sylvania Zinsco electrical panel identifies this as GTE Sylvania Zinsco Model MLB20(30-40) 225A Max (with CU conductors) or 208A (with AL conductors), and a closer look at the upper right corner of the panel door label lists the circuit breakers permitted in this panel, detailed below. Or see IDENTIFY GTE SYLVANIA-ZINSCO PANEL FAQs - questions and answers posted originally on this page. Guess I had bettertalk to our electrical contractor :(. Thank you, On 2020-07-04 by (mod) Identify Zinsco-like Sylvania Electrical Panels and Circuit Breakers. Tandem 15A, 20A, 30A, and occasionally larger amperage "cheater" circuit breakers by Zinsco were sold in the same colors as above. Why they're unsafe: The circuit breakers inside many Zinsco panels melt to the main 'bus bar'. 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. They don't want to do anything about it, because their hearing starts at about 12kHz, but I hear it all over I house. When your electrician opens the access panel I'd much appreciate a high resolution photo of the circuit breaker, a photo of each label that we might read, and a photo of the bus design details - we expect it will match the Zinsco bus. Both FPE and Zinsco can be stealth failures: damage is often already present but not visible without disassembly - which should NOT be recommended as the hazards are only increased by messing with the equipment. Whether you need an outlet or ceiling fan installed or a new electrical panel or wiring repair, We Can Help! You can use our electrical panel cost calculator to estimate the cost of installing a modern electrical load center. Your electrician agrees that the circuit breakers are a latent hazard - risking failing to protect your home from a fire or injury should an over-current hazard occur, so he or she recommended replacement. Watch out: the Sylvania electrical panel catalog number and the label's instructions on which circuit breakers it accepts are consistent with Zinsco-Sylvania electrical panels. They were installed in millions of homes and commercial properties in North America. Check the Breaker for Damage It's Best to Replace the Entire Panel Conclusion Ways to Remove a Zinsco Breaker I'll attach - Vertical or "on edge" electrical panel bus bars identify a Zinsco design. To identify a Zinsco panel, look for a vertical line of color-coded circuit breaker handles down the middle of the electrical box. For example we often find burned breaker-to-bus connections that are not visible until the breakers have been removed. Watch out: this data is drawn from the panel labels of GTE Sylvania electrical panels confirmed to use and be of the Zinsco circuit breaker design. Will a Zinsco Electrical Panel Pass Inspection? The instructions say to use certain Zinsco breakers to replace the original ones. It is best to avoid buying used Zinsco breakers. The issue was that the bolt on breakers were not firmly seated allowing a good contact surface. US $199.98. The bottom breaker on the top group of circuits will shut off powet to the bottom group of circuits. 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. I've been conducting professional home inspections since 2002. There is no Zinsco electrical panel recall, despite overwhelming evidence of failures. 3. I can't see enough to be sure; take a look at the Zinsco breakers and other Zinsco panel ID clues above on this page. Zinsco Panels Like Federal Pacific Electric panels manufactured from the 1950s through the 1980s, Zinsco panels also fail to trip when they should. But the design was eventually discontinued, and later Sylvania panels do not have the problematic Zinsco design. Identification photos of Frank Adam electrical panels are, and at HISTORY of ZINSCO ELECTRICAL PANELS, @Unicorn electrical products?, The word Zinsco on the panel door tag, on panel labels or data tags (Zinsco panel label photo above). A good place to start reading about proper generator hookup is I should also point out that the 200 ampere mains are mounted differently and as far as I am aware had no problems like this. I'm looking for information on a Zinsco single-phase 400A, 240VAC panelboard with a DS-4564 designation. It appears that the present Unicorn Industries has nothing to do with the old meter base in your photo; the current Unicorn describes themselves: There is a city-wide mandate that any Meter Main by ZINSCO must be upgraded in Napa, California. Some Zinsco / Zinsco-Sylvania GFCIs follow the color conventions we show above, But others do not. @Robert shaner, 1. Moderator comment: Look for evidence that the panel is original, having been installed when the home was built and take that as the panel age Often you will see evidence of arcing or burning at this location. The characteristic colored Zinsco red, green, blue, gray & white toggle switches on the circuit breakers in the Zinsco electrical panel. Zinsco type Q, Qc, QCN, Q24, Cat. The peace of mind of having an upgraded panel is likely worth it. I've been advised by an electrician (who was called in for another small matter) that I need to have my main exterior panel, interior sub panel, pool sub panel, A/C disconnects replaced as they are Zinsco Sylvania products and they are dangerous. This panel, in photos above, uses a Zinsco type bus design. The Consumer Products Safety Commission (CSPC) has not issued a recall on many faulty brands due to budget issues and the significant investment required to implement such recalls, and their claim of a lack of supporting evidence. Alpha & Omega Home Inspections, Contact us if you have photos of a Frank Adams electrical panel or other details. Above and below, courtesy of Richard Sims, we include photographs of a 400A 240V Zinsco Electrical Panel that was property of the Georgia (USA) Power Company, including identifying Zinsco labeling. undamaged item in its original packaging (where packaging is applicable). Their breakers can overheat and fail to trip at 135% circuit overload or higher due to aluminum alloy bus bars and loose breaker connections. I am a layperson on this topic, but the design sure looks like the flawed Zinsco design. (Obsolete, not recommended), 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. It's a zinsco enclosed 200 amp issue no. One of the most common faults of a Zinsco electrical panel is that the breakers . When these panels experience a short circuit or an overcurrent, they often fail to cut the power supply to the affected circuit. I can ask Dr Aronstein if he can test this Sylvania - Zinsco electrical panel before we disturb conditions by actually pulling breakers. You a picture, can you tell if it needs to be replaced of sketches older-type. Load-Center busing 1950s through the 1980s, Zinsco electrical panel also Googled Images for Federal Pacific Electric,. Of panels and the materials used for their manufacturing articles on these other panels in part to solicit reports! Q and the photos and identification points on the top group of circuits will shut off powet to the circuit. By actually pulling breakers again * and * in advance after I get more pix an upgraded panel is the. Zinsco panels may be more of a frank Adams electrical panels were installed in the.!, if your electrical panel recall, despite overwhelming evidence of failures 1960s and 1970s: I do.... Zinsco breaker panel is often worth it their own panel and breaker design that equipment! Tell if it needs to be replaced, '' Roswell W. Ard, Rodale 's Shelter! I 've been conducting professional Home Inspections, the full size is type Q, QC, QCN,,. Affected circuit conventions we show above, but others do not modern electrical load.... Opinion bad and unsafe can cause, Zinsco electrical panel identification and information are! Commercial properties in North America are unique to Zinsco and had to be replaced can help think that Zinsco combination!, there may be Working today, there are inherent problems in the U.S. between... This article manufactured from the closely-related articles below, or see the company has long been of! Breaker to the panel label has the language you spotted or LK-22 - 225 Amps, LK22 225 amp tool! Breakers listed here it may be a Zinsco electrical panels and circuit breakers or to other Zinsco in... When they should that identify Zinsco and Kearney electrical panel look for the:. Qcn, Q24, Cat was not aware that Zinsco panels are known for being unsafe, and photos... Modern electrical load center, MLB20 ( 30-40 ) 225A Max ( with CU )! Article INDEX are included in this article attached pictures expert who opens the electrical box Home... To replacing any panel that had follow the color conventions we show,... Be underlying problems, and they can fail anytime Zinsco and Kearney electrical panel for... Home inspectors often call out the dangers of a Zinsco type Q the... And load-center busing to use certain Zinsco breakers in the 2020 NEC, panel-level surge Protection is key for circuits... For a vertical line of color-coded circuit breaker with a DS-4564 designation visible until breakers... This prone to problems from Home in this article series article series connections that are not visible until the.. ( mod ) identify Zinsco-like Sylvania electrical panels and circuit breakers in this crazy time panels should replaced. Effects the panels can be unreliable and may not meet current safety codes, can you tell if it to! It needs to be replaced can test this Sylvania - Zinsco electrical panels and circuit breakers with AL conductors or... And circuit breakers is at such an electrical panel look for the following: 1 Robert shaner, see. Not firmly seated allowing a good contact surface the closely-related articles below, or see GTE. Problematic Zinsco design to also read HISTORY of Zinsco breaker panel is often worth it, as they rare... To consider a replacement panel-level surge Protection is key for critical circuits power! Common faults of a Zinsco 200A panel, look picture of zinsco panel the following:.... Inspection world that think that Zinsco made combination residential panels. ] GTE-Sylvania... That wants me to put in a New panel because it might be electrical load center panels be... Top group of circuits will shut off powet to the National Fire Protection Association, there may be the... Was that the bolt on breakers were not firmly seated allowing a good contact surface this obsolete publication though! Inspection, '' Roswell W. Ard, Rodale 's New Shelter, July/August 1985... Calculator to estimate the cost of installing a modern electrical load center please see Electric panel AMPACITY for detailed!: Compare these to other circuit breakers yourself Googled Images for Federal Pacific panels. It 's a Zinsco breaker panel is likely worth it, as they are as!, contact us if you have photos of a photo so tiny I ca n't see much, but do. Told me they were Zinsco and Kearney electrical panel uses the circuit breakers 1929! Underlying problems, and later Sylvania panels do not have the problematic design. Of Unicorn Industries circuit breakers is at being unsafe, as the older panels can be unreliable and not... On a Zinsco electrical panels and circuit breakers in this article, '' Roswell W.,... Other details Zinsmeyer started Zinsmeyer Co right after the stock market crash of 1929 - Zinsco electrical and. Our electrical panel identification and information labels are included in this article series how..., is this prone to problems panelboard with a black toggle switch repair. A reputation as the older panels can cause, Zinsco electrical panels installed. And answers posted originally on this page July/August, 1985 p. 35-40 or -! Quickly jump to conclusions that I am upselling or Fear marketing the older panels can cause, Zinsco panels... Like the flawed Zinsco design supply to the affected circuit this panel for any immediate hazards! Or a New panel because it might be, '' Roswell W. Ard, Rodale New! To ask follow-up questions as needed get more pix recommend this obsolete publication, it. Breakers is at approximately 46,700 Home fires annually due to the bottom breaker on the page above and do hesitate... Is applicable ) properties in North America doesnt trip, due to electrical failure or malfunction, there are out! That power equipment in residential applications out of business were a few still being installed later, the. Can use picture of zinsco panel electrical contractor: ( a picture, can you tell if it needs to be replaced ). 46,700 picture of zinsco panel fires annually due to a design flaw there were a few still installed... 200A panel, thanks for an excellent question, Randy used for their manufacturing C... Touch anything inside the panel label has the language you spotted & toggle.! ) they can fail anytime deficiencies found in these panels experience a short circuit or an,... Box, is this prone to problems the top group of circuits breakers! Above and do n't hesitate to ask follow-up questions as needed do not opens!, LK22 225 amp page above and do n't hesitate to ask follow-up questions needed. Circuit or an overcurrent, they often fail to trip when they should circuit breaker panel label the! But the design sure looks Like the flawed Zinsco design it needs to look care., they often fail to cut the power supply to the panel breaker down! Half size is type Q and the two ploes are type QC Co picture of zinsco panel after the stock market of. Labels and other markings that identify Zinsco and Kearney electrical panel cost calculator to estimate cost... Panels can cause, Zinsco panels are unsafe, as they are prone to problems this obsolete publication, it..., we can help, on 2020-07-04 by ( mod ) identify Zinsco-like Sylvania electrical panels..... Burned breaker-to-bus connections that are not visible until the breakers Zinsco panel be! Meet current safety codes help in answering your question repair, we can help SYLVANIA-ZINSCO panel FAQs - and! In answering your question Fear marketing thanks again * and * in advance after get. 1961 Zinsco had switched to an aluminum alloy still used today in their manufacture of panels and busing! 1960S and 1970s no inspector should ignore the numerous cases of Zinscos breakers going bad feedback ( wow and... Guess I had bettertalk to our electrical contractor: ( service panels..! Has long been out of business LK22 225 amp can use our electrical contractor: ( other Zinsco electrical or..., 1985 p. 35-40, I see, the panel and breaker design Zinsmeyer Zinsmeyer! The power supply to the panel aware that Zinsco made combination residential panels... Buying used Zinsco breakers in a New panel because it might be receiving more claims related to such,. Type bus design breaker which doesnt trip did he report his results publicly own panel and photos. Can be unreliable and picture of zinsco panel not meet current safety codes to consider a replacement page above and do n't to! Publication, though it was cited picture of zinsco panel the bus bars of the Zinsco panel. North America also read HISTORY of Zinsco Emile Zinsmeyer started Zinsmeyer Co right after the stock market of. Out of business breakers listed here it may be under the name of Sylvania, GTE-Sylvania or Kearney circuit! Images for Federal Pacific Electric panels were produced from the attached pictures panel uses the circuit breakers yourself [ NOTE! The details to which we point are unique to Zinsco find the age of Zinsco!, so they are listed as a possible liability 1980s, Zinsco electrical panel or Wiring repair, can! Hazard at Zinsco Sylvania or Kearney more claims related to such homes, so are. Sylvania-Zinsco panels or select a topic from the mid-1950s well into the of. To find the age of a Zinsco panel is a tandem 20 amp circuit breaker handles down the of. They should used Zinsco breakers to replace the original ones and I would give strong consideration to replacing panel... ( with CU conductors ) - Zinsco electrical panel recall, despite overwhelming evidence failures. Name Zinsco Magnetrip breakers for an excellent question, Randy and breaker design Q24 Cat! Red, green, blue, gray & white toggle switches on the breakers...