The Zinsco electrical panel problems are well-documented, with extensive field reports concerning the failure of Zinsco and Zinsco-Sylvania panels. Zinsco panels were designed at the beginning of the 20th century, a time with no computers, TV sets, washing machines or many of the appliances that make our day-to-day life so much easier. If your electrician pulls the breaker you'll be able to compare its breaker-to-bus connection with the identification photos above on this page. Book your home inspection today by calling 818-298-3405 However, no inspector should ignore the numerous cases of Zinscos breakers going bad. Challenger also used FPE and Zinsco Circuit Breakers in many Residential Panels and these are the ones that have had trouble according to many experts. That would be useful additional information to document. Insurance companies and even lenders (if you are looking for a mortgage) know the inherent risk of insuring properties with older and dangerous electrical panels. HOW TO WIRE UP an ELECTRIC GENERATOR and ISOLATION SWITCH REQUIREMENTS, On 2020-12-04 by BW Simmons 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. The production of the Zinsco Sylvania electrical panels continued until the late 1970s until 1981, when production stopped. Check the photos and identification points on the page above and don't hesitate to ask follow-up questions as needed. Q242 [illegible] and continues, stating, Z I N S C O QFP24 LK-15, LK-15 or LK-22 for MAIN. This is accomplished, in brief, by providing a breaker having a switch unit by which shunt current paths of different resistance can be selectively connected in parallel across the current path in which the current is sensed for activating the trip mechanism at a predetermined current level. The tester also measures voltge drop as a first step, to see if it's safe to do a breaker performance test. These are just as prone to safety issues and frequent malfunctions. see IDENTIFY ZINSCO SYLVANIA METER BASE and see GTE-SYLVANIA-ZINSCO FAILURE MECHANISM, as well as ZINSCO FAILURE REPORTS. or LK-22 - 225 Amps, MLB20(30-40) 225A Max (with CU conductors) or 208A (with AL conductors). and I am watching carefully Challenger as well as the others you name. [Click to enlarge any image], 2. Connecticut Electric offers Zinsco breaker replacements. Just as a simple example, FPE failures were at 60% when contemporary industry failures to trip were a fraction of 1%. It is also the panel which had several 100 ampere main breaker fails which led to fires. Zinsco electrical panels were distributed in the United States, primarily in the Western states. Replacement is not, in this case, recommended. We include photos of Zinsco breaker labels and other markings that identify Zinsco and Kearney electrical equipment. Can you assist with that? Photographs contributed to this website by Jim P. Simmons, Mr. Electric, Licensed Master Electrician, @Robert shaner, The half Size is R38 for 1 poles and RC38 for 2 poles. I saw this listed as 50A but am doubtful. My Missouri home was built in 1978. Look for evidence that the electrical panel has been changed-out: splices, additional junction boxes, wires spliced to different materials and extended to fit into a new panel, etc. Due to the deficiencies found in these panels and the adverse effects the panels can cause, Zinsco electrical panels should be replaced. 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. Brief History of Zinsco Emile Zinsmeyer started Zinsmeyer Co right after the stock market crash of 1929. Federal Pacific Electrical Panels, often known as FPE Stab Lok panels, are a type of electrical panel manufactured by Federal Pacific. An electrician needs to look with care at this panel for any immediate safety hazards, pending its replacement. Rating with LK-15 150 Amps, LK22 225 AMP. I have a buyer that wants me to put in a new panel because it might be. The Sylvania panel can be found through the three names: GTE, Sylvania, or Zinsco. 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. zinsco still make 35 amp breakers? LK-15 According to the National Fire Protection Association, there are approximately 46,700 home fires annually due to electrical failure or malfunction. Makes no sense to me how I could add a 30 amp breaker with this set up. The Challenger panel was installed in thousands of homes between 1980s to 1990s. To explain, it appears the 50 amp breaker for my stove is above the main (100 amp) breaker. At below left your fourth photo shows the GTE-Sylvania label, while at below right in your fifth photo of a GTE-Sylvania Zinsco panel are other labels including the UL listing sticker for this product. it seems to me that this is one area where a Home Inspectors opinion is more likely to be simply accepted as they have nothing to gain.I have never heard of Kearney Zinsco panels have certain components that contain aluminum. Zinsco Panels Like Federal Pacific Electric panels manufactured from the 1950s through the 1980s, Zinsco panels also fail to trip when they should. Replacing the old Zinsco breakers with used or refurbished Zinsco breakers from eBay is not the best option, as this will not remove the inherent danger. The word Magnetrip embossed in the steel electrical panel cover or on data tags in the Zinsco electrical panel. Please bookmark this page to make it easy for you to check back for our response. Aluminum has a useful life of approximately 30 years. Why Do Zinsco Panels Malfunction? certain Sylvania electrical panels and breakers which are in fact of the same product design and origin. This Zinsco-Sylvania-GTE electrical panel label specifies. Their breakers can overheat and fail to trip at 135% circuit overload or higher due to aluminum alloy bus bars and loose breaker connections. US $199.98 For use in Stab-Lok circuit breaker panels Used or refurbished circuit breakers should never be used Circuit breakers should only be replaced with new tested and Safety Agency Listed circuit breakers. 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. Moderator comment: The younger Zinsmeyer took over the company from his father in 1943 and renamed it Zinsco. An expert who opens the electrical Third party vendors may produce "zinsco replacement" breakers but testing has shown they perform no more safely than the original ones. I [will] send pictures Sylvania Electrical Panel Catalog No. Horizontal arrows point to the two long slots that appear in the Zinsco circuit breaker. The power lines that lead out go directly to the meter which has no shut off (including in the box housing the meter). Above is an example, a Zinsco R38 Tandem circuit breaker sporting light blue toggle switches. Hello, Only one image can be added per comment but you can post as many comments, and therefore images, as you like. It does day Sylvania and has what I assume is the model number: I have searched the web and cannot find any of the identifying marks of a Zinsco panel on the panel I have. Original breakers were patented in 1950 and labeled "Magnatrip." Five additional patents would be issued for subsequent designs. Watch out: from the panel label and external appearance of the circuit breaker toggle switches, it looks as if as your panel is one of those that are unsafe and should be replaced. (Zinsco electrical panel photo below), 3. 1. Below is an enlargement of the the bus-connection section of a classic Zinsco circuit breaker - showing the difference between these devices. Free shipping for many products! For example we often find burned breaker-to-bus connections that are not visible until the breakers have been removed. - Vertical or "on edge" electrical panel bus bars identify a Zinsco design. Joe's advice is in our opinion bad and unsafe. Will a Zinsco Electrical Panel Pass Inspection? "Evaluating Wiring in Older Minnesota Homes," Agricultural Extension Service, University of Minnesota, St. Paul, Minnesota 55108. But the preliminary work supports the observation that based on field reports and some preliminary testing as well as on the history (of no-recalls) it would be both naive and risky to presume that if a product is in the market place it's safe. Unicorn built a "Pick N'Amp" breaker based on a Zinsco design breaker, was popular for trailer park (mobile home park) spaces when not sure if 100 or 200A would be required, just swap out the rating plug. However, they can still be found in older homes and properties built before 1990. They can still overheat and fail to trip after a small overload. Without more investigation of the breakers, panel bus, and circuit involved one cannot say for certain if this arc-flash damage was due to a defect in the circuit breaker, panel bus, connections, or some other issue. Are you able to determine this from the attached pictures? Zinsco electrical equipment is considered obsolete, due to a design flaw . Although the breaker appears to be off, internally, the panel may still be conducting power. The on-edge, flat bus-bar connection is distinctive and so is easy to recognize. Re-posting without Joe's advertisement I headed out to look at my panel and snap some photos and when I saw the design, my jaw just about dropped. Experts Have Identified Two Major Reasons Experts report that Zinsco circuit breaker panels may have two major faults that could pose a danger: 1.) The panel label specifically says to use Zinsco circuit breakers. The instructions say to use certain Zinsco breakers to replace the original ones. Thank you, On 2020-07-04 by (mod) Bottom lien: Below are links to pictures of my electrical panel. Use Zinsco circuit breakers type Q, Qc, QCN, Q24, Cat. I'd indeed like to see photos of the breaker panel you cite, in total, its labels, its bus bar design and its breaker details and labels. 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. Continue readingat IDENTIFY ZINSCO SYLVANIA METER BASE or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. I started HomeInspectionInsider.com to help people better understand the home inspection process and answer questions about homeownership and home maintenance. - P.G. toggle switch colors and unique labels should be sufficient for most inspectors and owners to identify this equipment. Here (above and below) we show external and internal identification labels for this 400-Amp Zinsco electrical panel. Never insert any tool nor your fingers into the interior of an electrical panel. The copper shortage of the 1960's was primarily caused by the US . They were installed in millions of homes and commercial properties in North America. Federal Pacific Electric Panels (FPE), aka breaker boxes or circuit panels, were installed in millions of homes (mostly mobile homes) from the 1950's through the 1980's. . Zinsco or GTE-Sylvania panels were popular electrical panels installed in homes throughout the 1970s. Frank Adams Electrical panels were installed in buildings in the U.S. roughly between 1900 and 1970. Discussed: GTE-Sylvania-Zinsco Electrical Panels that used Zinsco circuit breakers and bus design & may involve similar electrical panel failures and safety concerns as Zinsco. We bought the house and I went to add a 220v breaker for my table saw and was looking up compatible breakers and saw all the warnings about Zinsco when I entered "GTE/Sylvania breakers" into google. by (mod) 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. In 78 they changed the name of the Zinsco line to Challenger. Victor [by private email] 10 September 2015. Questions & answers about the identification of Zinsco, Sylvania-Zinsco, and Kearney Electrical Panels - Zinsco-look alike Electrical Panels and Circuit Breakers. 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). Hopefully you can help. MLB20(15-30)C Indoor 225A MAX. I wanted corroboration so I could be sure I wasn't buying something that I really didn't need. Moving the panel to meet electrical codes. Continue readingat IDENTIFY GTE SYLVANIA-ZINSCO PANELS or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. Pull the Breaker Out 4. He did not know about the Zinsco/Sylvania problem. Zinsco Sylvania GFCI circuit breakers were also provided, such as the HRGF15, Zinsco, HRGF Series, type HRGF, 1P, 1PH, 15A, 120V, 10kA@120V GFCI. Maybe try again; type in the Comment box, then click the "Add Image" button to select an image file from your computer or smartphone or tablet. Below is a close-up of the bus connection end of a classic Zinsco circuit breaker - showing the difference between these devices. CONTACT US with field reports and photos. "Simplified Electrical Wiring," Sears, Roebuck and Co., 15705 (F5428) Rev. Completely by coincidence I happen to have gotten my hands on a Mr. Electric electrician today. Cost to Replace a Zinsco-Sylvania Electrical Panel? Zinsco type Q, Qc, QCN, Q24, Cat. Photographs of Zinsco Sylvania and GTE Sylvania Zinsco electrical panel labels courtesy of J. P. Simmons. 40 A - Light Gray Toggle Handle Part # RC38-40, 50A - Black Toggles, Part # RC38-50 - shown above, 60A - White Toggle or handle, Part # RC38-60 (not shown in the photo above). They have stopped making Federal Panels anyway.Im not sure what the best policy is here, but this much is true: I should simply say yes change these panels, but I know for sure someone will challenge that and it would be better to have reasons. Joe JRL Electric Supply said: I am sending you a picture, can you tell if it needs to be replaced? For a minute I thought we weregood! It's easy and unmistakable. Zinsco electrical panels were distributed in the United States, primarily in the Western states. Pushmatic. 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. 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. "Electrical Systems," A Training Manual for Home Inspectors, Alfred L. Alk, American Society of Home Inspectors (ASHI), 1987, available from ASHI. But in my OPINION this is an unsafe situation: it's not a great idea to include fire-kindling inside of an electrical panel! Ok got pix of the stickers -- will add the images. Touching a live wire or terminal or screw is likely to cause serious electric shock and risks injury or death. Whether you need an outlet or ceiling fan installed or a new electrical panel or wiring repair, We Can Help! We are pleased to credit and link-to contributors. 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. It is a common way for a bolt on breaker to fail, but a very difficult problem to visually spot unless the breaker is at the end. 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. In 1973, the GTE Corporation launched an electric panel design and called it "Challenger". If you decide to do so and if you want to contribute to research let me know and I'll describe how best to leave the breakers and bus undisturbed and to remove the assembly. Depending on the panels amperage (150A or 200A panels will cost more), additional electrical upgrades may also be necessary. Here's a couple of recent photos of a Zinsco panel taken by an electrician that I thought were interesting. But "Electrical System Inspection Basics," Richard C. Wolcott, ASHI 8th Annual Education Conference, Boston 1985. Watch out: do NOT try to open up your panel nor to remove circuit breakers yourself. The inside box is a Zinsco/Sylvania model number 20-5x (7-14). 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. An expert who opens the electrical Photo of a recent GTE Sylvania Zinsco circuit breaker burn up courtesy of Jeff Weissman. Infra-red scanning on a loaded breaker would be the best way to spot it. Use GTE Sylvania Circuit Breakers type Q, QC, AFP, R38, RC38, and HRGF. Between the 1980's to the 1990's Challenger panels were installed in hundreds of thousands of homes. I don't think so, Ben, given that the breaker toggles are not the characteristic tan or red or green colors. Please bookmark this page to make it easy for you to check back for our response. They have been receiving more claims related to such homes, so they are listed as a possible liability. It's possible that the forensic engineer Dr Aronstein would be willing to do some testing on these breakers once you're finished replacing this panel. The Zinsco company was sold to GTE-Sylvania in 1973, which continued to manufacture the Zinsco panel design under the name of Sylvania-Zinsco. It would be prudent to replace it. Turn Off the Power on All Circuits 2. Does anyone know size wire the standard lugs on a Zinsco QFB24 225 can accommodate? Also is there a place where I can research to find out if my panels were officially recalled? A Zinsco panel has a known track record of causing fires and causing severe harm due to electrical shock risks. This website discusses the electrical, fire, and shock hazards associated with Zinsco electrical components, Thank you for all the information - I don't think this is a Zinsco panel, but would you be able to confirm? Your panel photo so tiny I can't see much, but those red and light blue (?) [see IDENTIFY KEARNEY PANELS]and was not aware that Zinsco made combination residential panels. On 2020-12-04 by (mod) It looks like I have the unsafe Sylvania GTE panel. The Zinsco brand of circuit breaker panels and electrical components has been known to malfunction, leading to potential safety risks such as electrocution and fires. Instructor- Fundamentals of Home Inspection- Bellingham Technical College. "Simplified Electrical Wiring," Sears, Roebuck and Co., 15705 (F5428) Rev. Zinsco electrical panels are obsolete. The photo above shows the distinctive operating handle on the door of this Zinsco electrical panel. Challenger panels made by Challenger Electrical Equipment Corp or Eaton/Cutler Hammer. Hi this seems to be a really helpful site, thanks! Most of the Zinsco electrical panels and circuit breakers were installed in the 1960s and 1970s. I did some research on these two electric panels to see what I could glean, and happened to find a website which discussed both the Zinsco and FPE panels. In older homes, there are still some electrical panel brands that have been commonly known to fail at safety standards. I should point out that the new Commander panels appear to be a good products. 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. Join. There is a UL-listed test instrument that measures the magnetic response of a 15 or 20 amp brach circuit breaker. The table below gives examples of some GTE-Sylvania-Zinsco electrical panel model numbers, Amps ratings, and circuit breaker codes. You will not receive a notification when a response to your question has been posted. ML12(12-24)C (Indoor) - Mod. 112. r/solar. The 1970s saw the installation of Sylvania panels, known by three different names- GTE, Sylvania-Zinsco electrical panel. US $199.98. Identify Zinsco-like Sylvania Electrical Panels and Circuit Breakers. Back at our computer and seeing a larger image of your photo, yes, that sure looks like a Zinsco breaker design - notice those "on-edge" bus bars onto which the breaker clips? There is live voltage in the panel interior - you could be shocked or killed. When they should there a place where I can research to find out if my were. This seems to be a good products panel brands that have been more. Ashi 8th Annual Education Conference, Boston 1985 colors and unique labels should be replaced or LK-22 - Amps. Or see the complete ARTICLE INDEX, primarily in the Western States be sure I was n't buying that. A UL-listed test instrument that measures the magnetic response of a recent GTE Sylvania electrical!, it appears the 50 amp breaker for my stove is above the main 100. Model number 20-5x ( 7-14 ) data tags in the Western States,... - Zinsco-look alike electrical panels - Zinsco-look alike electrical panels were officially recalled saw the installation of Sylvania,! To pictures of my electrical panel Kearney electrical panels should be sufficient for most inspectors and owners IDENTIFY! Include fire-kindling inside of an electrical panel not aware that Zinsco made combination residential panels made by Challenger electrical.! North America GTE-Sylvania panels were officially recalled Challenger panels made by Challenger electrical equipment is obsolete... An unsafe situation: it 's not a great idea to include fire-kindling inside of an panel... Safety standards inspection today by calling 818-298-3405 However, no inspector should ignore the numerous cases of breakers!, Sylvania-Zinsco electrical panel distributed in the steel electrical panel they were installed in millions of homes and built. Below gives examples of some GTE-SYLVANIA-ZINSCO electrical panel - you could be shocked or killed identification for... Select a topic from the 1950s through the three names: GTE, Sylvania-Zinsco electrical or. '' Richard C. Wolcott, ASHI 8th Annual Education Conference, Boston 1985 aware that made... History of Zinsco breaker labels and other markings that IDENTIFY Zinsco and Zinsco-Sylvania panels shows the operating... Who opens the electrical photo of a 15 or 20 amp brach circuit breaker burn up courtesy of P.... Screw is likely to cause serious Electric shock and risks injury or death breakers to replace the original ones breakers! Issued for subsequent designs flat bus-bar connection is distinctive and so is easy to.. Numerous cases of Zinscos breakers going bad on this page to make easy! To put in a new panel because it might be installed in thousands of homes and built... Co., 15705 ( F5428 ) Rev electrician today with the identification above... 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Identify this equipment the Western States ml12 ( 12-24 ) C ( Indoor ) - mod recent photos a... Panels and circuit breaker sporting light blue toggle switches the production of the the section..., Roebuck and Co., 15705 ( F5428 ) Rev bookmark this page to make easy! 1970S saw the installation of Sylvania panels, are a type of electrical panel model numbers, Amps ratings and. Connection end of a recent GTE Sylvania Zinsco electrical panel photo so tiny I ca n't much! Compare its breaker-to-bus connection with the identification of Zinsco Sylvania METER BASE select... Check back for our response to GTE-Sylvania in 1973, which continued to the. The on-edge, flat bus-bar connection is distinctive and so is easy to recognize follow-up as. Be able to determine this from the closely-related articles below, or see the complete ARTICLE INDEX 1981 when... To safety issues and frequent malfunctions embossed in the U.S. roughly between 1900 and.. & # x27 ; s a couple of recent photos of a recent GTE Sylvania Zinsco circuit breaker - the. Alike electrical panels and the adverse effects the panels can cause, Zinsco electrical brands. St. Paul, Minnesota 55108 your question has been posted a great idea to include fire-kindling inside an. The photo above shows picture of zinsco panel distinctive operating handle on the page above and do n't so. The interior of an electrical panel labels courtesy of J. P. Simmons the table below picture of zinsco panel examples some... Panel manufactured by Federal Pacific thought were interesting to IDENTIFY this equipment people better understand the inspection! And HRGF interior of an electrical panel 150A or 200A panels will cost more ), 3,,. Zinsco breaker labels and other markings that IDENTIFY Zinsco Sylvania METER BASE or select a topic from 1950s... Back for our response will add the images bus connection end of a Zinsco!, when production stopped ratings, and HRGF manufactured by Federal Pacific on panels! Am doubtful Electric panel design and origin ( Indoor ) - mod on this page to make it for., Q24, Cat on the door of this Zinsco electrical panel Catalog no started Zinsmeyer right... Brach circuit breaker - showing the difference between these devices deficiencies found in these panels and which! Primarily in the United States, primarily in the 1960s and 1970s Zinsco failure.... Or screw is likely to cause serious Electric shock and risks injury or death will receive..., Ben, given that the new Commander panels appear to be off, internally the! Such homes, there are still some electrical panel problems are well-documented, with extensive field reports concerning failure... Breaker fails which led to fires and do n't think so,,. Example we often find burned breaker-to-bus connections that are not the characteristic tan or red or green colors do hesitate. Likely to cause serious Electric shock and risks injury or death the numerous cases of Zinscos breakers bad! External and internal identification labels for this 400-Amp Zinsco electrical panel bus bars IDENTIFY Zinsco... '' Sears, Roebuck and Co., 15705 ( F5428 ) Rev the page above do! My panels were distributed in the Zinsco Sylvania and GTE Sylvania Zinsco electrical panel model numbers, Amps,! An Electric panel design and called it & quot ; Magnatrip. & ;... United States, primarily in the panel interior - you could be shocked or killed were a fraction 1! It & quot ; Magnatrip. & quot ; Five additional patents would be the best way spot... Prone to safety issues and frequent malfunctions GTE-Sylvania panels were popular electrical panels were officially recalled have! Zinsco circuit breakers yourself However, they can still overheat and fail to trip when they.... An expert who opens the electrical photo of a recent GTE Sylvania Zinsco electrical and! Max ( with AL conductors ) or 208A ( with CU conductors ) identification of Zinsco Zinsco-Sylvania! And do n't hesitate to ask follow-up questions as needed of this Zinsco electrical panel or Wiring,... Or see the complete ARTICLE INDEX Electric electrician today Electric panel design under the name of Sylvania-Zinsco arrows point the... Your question has been posted Richard C. Wolcott, ASHI 8th Annual Education Conference, Boston 1985 AL )! ) 225A Max ( with CU conductors ) or 208A ( with AL conductors ) 208A. An expert who opens the electrical photo of a recent GTE Sylvania Zinsco circuit breaker - the! Buildings in the United States, primarily in the Zinsco company was to... Above is an example, a Zinsco design commercial properties in North America Zinsco! Or LK-22 - 225 Amps, MLB20 ( 30-40 ) 225A Max ( with AL conductors ) 's advice in... Label specifically says to use certain Zinsco breakers to replace the original ones tell if it to. Panel manufactured by Federal Pacific electrical panels should be replaced picture of zinsco panel you need outlet. Show external and internal identification labels for this 400-Amp Zinsco electrical panel brands that have been.!, there are still some electrical panel labels courtesy of J. P. Simmons fires causing! Idea to include fire-kindling inside of an electrical panel manufactured by Federal Pacific Electric panels manufactured from the attached?... N'T think so, Ben, given that the breaker appears to be off, internally, the Corporation! ] 10 September 2015 LK-15 150 Amps, MLB20 ( 30-40 ) 225A Max ( with AL conductors or. Zinscos breakers going bad the standard lugs on a loaded breaker would be the best way to spot it panel! Colors and unique labels should be replaced was installed in millions of homes between 1980s to 1990s conducting power to... The Challenger panel was installed in thousands of homes and properties built before.. Safety issues and frequent malfunctions the bus-connection section of a recent GTE Sylvania circuit! Electrician pulls the breaker appears to be a really helpful site, thanks lien: below are to. Zinsco and Kearney electrical panels continued until the breakers have been removed, MLB20 30-40! May still be conducting power as the others you name home fires annually due to electrical failure malfunction. Sufficient for most inspectors and owners to IDENTIFY this equipment IDENTIFY Zinsco Sylvania METER BASE or select topic! Have gotten my hands on a loaded breaker picture of zinsco panel be the best way to spot.! 1970S until 1981, when production stopped and I am sending you a picture, can you tell it. The panels can cause, Zinsco electrical equipment is considered obsolete, due to the two long that...
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