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 How to Identify Zinsco & GTE Sylvania-Zinsco Electrical Panels & Circuit Breakers
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InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.
Zinsco circuit breaker & electrical panel identification guide: here we provide text, labels, and equipment photographs used to help identify Zinsco and GTE-Sylvania-Zinsco electrical panels and circuit breakers, and we include photographs of a Zinsco look alike marketed by Kearney.
Green links show where you are. © Copyright 2013 InspectAPedia.com, All Rights Reserved. Author Daniel Friedman.
How to Identify Zinsco & Zinsco-Sylvania & GTE-Sylvania-Zinsco & Kearney Electrical Panels and Circuit Breakers
This website discusses the electrical, fire, and shock hazards associated with Zinsco electrical components,
circuit breakers, electrical panels, including
certain Sylvania electrical panels and breakers which are in fact of the same product design and origin.
Readers should also see IDENTIFY GTE SYLVANIA-ZINSCO PANELS , see IDENTIFY KEARNEY PANELS, see the GTE-SYLVANIA-ZINSCO FAILURE MECHANISM as well as ZINSCO FAILURE REPORTS.
Zinsco electrical panels were distributed in the United States, primarily in the Western states. Some Zinsco electrical panels include an embossed "Magnetrip" label in the panel cover (photo, above left). The photo (above-right) of a recent GTE Sylvania Zinsco circuit breaker burnup is courtesy of Jeff Weissman. Other Zinsco electrical panel identification and information labels are included in this article.
IDENTIFY Zinsco HD - 4032 400 Amp, 2 pole, 240V AC Electrical Panel
Above, 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. The Zinsco panel exterior (above left).
The right hand photo (above right) shows the distinctive operating handle on the door of this Zinsco electrical panel.
Below we show external and internal identification labels for this 400-Amp Zinsco electrical panel. The electrical panel is also tagged with the electrician's card, Jim Wise, owner, Wise Electric.
Below we show the interior of this 400Amp Zinsco electrical panel.
Readers should also see IDENTIFY GTE SYLVANIA-ZINSCO PANELS , see IDENTIFY KEARNEY PANELS, see the GTE-SYLVANIA-ZINSCO FAILURE MECHANISM as well as ZINSCO FAILURE REPORTS.
Contact Us with field reports and photos. We are pleased to credit and link-to contributors.
Frequently Asked Questions (FAQs)
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Questions & answerrs about the identification of Zinsco, Sylvaniz-Zinsco, and Kearney Electrical Panels - Zinsco-look alike Electrical Panels and Circuit Breakers.
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Technical Reviewers & References
Related Topics, found near the top of this page suggest articles closely related to this one.
- 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. Photographs contributed to this website by Jim P. Simmons, Mr. Electric, Licensed Master Electrician,
1320 Dayton Street SE, Olympia, WA 98501, 360-705-4225, Fax 360-705-0130 or by email to mrelectricoly@msn.com
- Thanks to various electricians, home owners, and home inspectors for contributing the Zinsco Sylvania-Zinsco electric panel and circuit breaker field failure reports cited above.
- Thanks to David Osborn, an alert home inspector, for helpful critique regarding the need for Zinsco/Sylvania electrical panel replacement, 4/27/06
- Thanks to Joe Funderburk,
Alpha & Omega Home Inspections,
Hickory Grove, SC for his photos of a Kearney electrical panel. Mr. Funderburk is a NACHI member and home inspector who can be reached at jfunderburk@aohomeinspection.com or at www.aohomeinspection.com
- Thanks to Texas electrician Jeff Weissman for contribution of photographs of burned Zinsco circuit breakers. 03/06/2007. Mr Weissman can be reached at jeffweissman@gmail.com or by telephone at 713-666-6605
- 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
Books & Articles on Building & Environmental Inspection, Testing, Diagnosis, & Repair
 The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 25th Ed., 2012, is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Field inspection worksheets are included at the back of the volume. Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. Enter INSPECTAHRB in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
Or choose the The Home Reference eBook for PCs, Macs, Kindle, iPad, iPhone, or Android Smart Phones. Special Offer: For a 5% discount on any number of copies of the Home Reference eBook purchased as a single order. Enter INSPECTAEHRB in the order payment page "Promo/Redemption" space.
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- Recommended books on electrical inspection, electrical wiring, electrical problem diagnosis, and electrical repair can be found in the Electrical Books section of the InspectAPedia Bookstore. (courtesy of Amazon.com)
- Rust and Corrosion in Electrical Panels, A Study and Report on Frequency and Cause for Electrical and Home Inspectors at Residential Electric Panels
- "Electrical System Inspection Basics," Richard C. Wolcott, ASHI 8th Annual Education Conference, Boston 1985.
- "Simplified Electrical Wiring," Sears, Roebuck and Co., 15705 (F5428) Rev. 4-77 1977 [Lots of sketches of older-type service panels.]
- "How to plan and install electric wiring for homes, farms, garages, shops," Montgomery Ward Co., 83-850.
- "Simplified Electrical Wiring," Sears, Roebuck and Co., 15705 (F5428) Rev. 4-77 1977 [Lots of sketches of older-type service panels.]
- "Home Wiring Inspection," Roswell W. Ard, Rodale's New Shelter, July/August, 1985 p. 35-40.
- "Evaluating Wiring in Older Minnesota Homes," Agricultural Extension Service, University of Minnesota, St. Paul, Minnesota 55108.
- "Electrical Systems," A Training Manual for Home Inspectors, Alfred L. Alk, American Society of Home Inspectors (ASHI), 1987, available from ASHI. [DF NOTE: I do NOT recommend this obsolete publication, though it was cited in the original Journal article as it contains unsafe inaccuracies]
- "Basic Housing Inspection," US DHEW, S352.75 U48, p.144, out of print, but is available in most state libraries.
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Zinsco Main Panel
Zinsco blue/silver label
Underwriter's Laboratory Label
A Zinsco Electrical Panel
Zinsco circuit breaker labels
Zinsco circuit breaker labels
