Is a Zinsco Panel Dangerous?

Short answer: a Zinsco panel is worth taking seriously, but it has not been recalled. Home inspectors and insurers flag Zinsco and Sylvania-Zinsco panels because the way the breakers connect to the panel’s bus bars can loosen, overheat and arc over time, and a breaker that is damaged this way may not trip when it should. Not every Zinsco panel has failed, but these panels are now decades old, replacement parts are hard to find, and there is no simple way to confirm one is working safely. If your Newnan-area home has one, have a licensed electrician evaluate it, and plan on replacement.

What Is a Zinsco Panel?

Zinsco made residential electrical panels and breakers that were installed in many U.S. homes from roughly the 1950s through the 1970s. The product line was later sold under the Sylvania name, so you may see “Sylvania-Zinsco” or “GTE-Sylvania.” In Coweta County, they turn up mostly in older homes in established neighborhoods, and sometimes as a subpanel in a garage or addition.

What Is the Concern?

The main concern is the connection between each breaker and the bus bars, the metal strips that carry power through the panel. According to InterNACHI, Zinsco panels “have a reputation for being problematic and further evaluation by a qualified electrician is recommended.” Great American Insurance Group describes the issues in its loss-control guidance:

• Breakers clip onto the bus bars, and over years of heating and cooling that connection can loosen
• A loose connection can arc, overheat and, in some cases, melt the breaker onto the bus bar
• A breaker damaged that way may not trip in an overload or short circuit, and may not shut off even when switched off
• Some panels used aluminum parts that can corrode, which adds to poor connections

Was Zinsco Recalled?

No. As far as we can find, there is no U.S. Consumer Product Safety Commission recall of Zinsco or Sylvania-Zinsco panels or breakers, and the federal record is different from Federal Pacific’s. Any article that says Zinsco panels were recalled is not accurate. The concern comes from field experience by electricians and inspectors and from insurer underwriting guidance. That is a real concern, but it is a different kind of evidence than a recall. For comparison, see our post on Federal Pacific Stab-Lok panels.

How to Tell If You Have a Zinsco Panel

Open only the outer panel door. Do not remove the inner cover (the dead front). Look for:

• “Zinsco,” “Sylvania,” “GTE-Sylvania” or “Magnetrip” on the label or the panel door
• Thin, colorful breaker handles in blue, red, green or other colors
• A home inspection report that names the panel brand

If you are not sure, text us a clear photo of the open panel door and label at (470) 516-7261, and we will tell you what we see.

Warning Signs That Need Attention Now

• A burning or hot plastic smell at the panel
• A panel cover that feels warm
• Buzzing, crackling or popping from the panel
• Scorch marks, melted plastic or discoloration
• Breakers that will not reset or will not stay off
• Lights that flicker or dim throughout the house

If you notice any of these, do not open the panel. Call a licensed electrician. If there is smoke or fire, leave the home and call 911. See why an electrical panel buzzes for more on panel noises.

Should I Replace a Zinsco Panel?

Most electricians recommend replacing it, and many insurers ask about panel brand when writing a policy. Because Zinsco breakers are no longer made, a failed breaker is hard to replace with a listed part, and swapping breakers does not address the bus bar connections. Replacing the panel with a new, currently listed panel solves both problems and is a good time to add the AFCI and GFCI protection, surge protection and capacity a modern home needs. Learn more about electrical panel upgrades in Newnan.

Frequently Asked Questions

Are Zinsco panels illegal?

No. Existing Zinsco panels are not illegal, and they were not recalled. They are flagged because of known connection problems and their age.

Will a home inspector flag a Zinsco panel?

Usually, yes. Inspectors commonly recommend evaluation by a licensed electrician, and buyers or insurers may ask for replacement.

Can I just replace the Zinsco breakers?

Usually not. Original breakers are no longer made, and the concern includes the bus bar connections, so replacing the whole panel is the standard recommendation.

Do I need a permit to replace a panel in Newnan or Coweta County?

Yes. Panel replacement requires a permit and inspection through the City of Newnan or Coweta County, depending on your address. We pull it for you.

Talk to a Licensed Newnan Electrician

If you think you have a Zinsco panel, or your inspector flagged one, we will take a look and give you a straight answer. Call (678) 552-9399 or text (470) 516-7261. We are at 1002 Highway 16 W, Suite A, Newnan, GA 30263. Learn more about our residential electrical services in Newnan.

Sources: InterNACHI, “Electrical Service Panels” (nachi.org); Great American Insurance Group, “Is Your Electric Panel a Fire Risk?” (Loss Control); U.S. Consumer Product Safety Commission recall database (cpsc.gov), no Zinsco recall found.