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Dangerous Panels in Commercial Properties: 7 Critical Insights for Multi-Family Property Managers

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Zinsco panels pose a significant safety risk, particularly in the context of multi-family properties, due to their tendency to overheat and arc. The National Fire Protection Association reports that electrical failure or malfunction contributes to roughly 46,700 home fires annually, a statistic that underscores the critical importance of electrical safety in residential buildings.

For property managers overseeing multi-family units equipped with Zinsco circuit breakers, it’s crucial to recognize the dangers these panels present. The inherent design flaws in Zinsco panels, including their failure to trip in response to overcurrents or short circuits, heighten the risk of electrical fires. The use of a specific type of aluminum in Zinsco breakers can lead to the components melting and fusing to the bus bar, preventing the breakers from functioning as intended and significantly increasing the potential for fire hazards.

Given these risks, we strongly advise property managers to prioritize the inspection and replacement of Zinsco panels in their buildings. Ensuring the safety of electrical systems not only protects residents but also helps to safeguard the property from the devastating impact of a fire.


1. What is a Zinsco Electrical Panel?



Zinsco electrical panels, once a staple in both residential and commercial properties throughout North America from the 1960s to the 1970s, are now recognized for their safety risks. The brand gained popularity in 1963 with the introduction of the R38 240 volts twin circuit breaker, distinguished by its ability to connect with both bus bars, enhancing its appeal in the market.

After Zinsco’s acquisition by GTE Sylvania in 1973, the production of Zinsco Sylvania electrical panels continued until the late 1970s, ceasing entirely in 1981. Despite the halt in production, installations of these hazardous electrical panels persisted into the early 1980s.


Presently, Zinsco electrical panels are considered obsolete and pose a significant risk due to their construction and performance issues. Notably, the R38 breakers—a two-pole breaker designed to occupy a single slot—exhibit a particularly high failure rate. These breakers are prone to overheating and may not trip correctly in situations of 135% circuit overload or more, a flaw attributed to the use of aluminum alloy in the bus bars and the propensity for loose connections between the breakers.

For property managers overseeing multi-family dwellings, the presence of Zinsco electrical panels necessitates immediate action. These panels’ inherent risks underscore the importance of comprehensive electrical safety assessments and the prompt replacement of any Zinsco installations to ensure the safety and reliability of electrical systems within their properties.



2. Are Zinsco Electric Panels Recalled?


Despite the substantial evidence highlighting their failures, Zinsco electrical panels have not been subject to an official recall. These panels are widely acknowledged as unsafe and pose a considerable risk of fire, yet they have not been formally recognized as hazardous by the Consumer Products Safety Commission (CPSC).

Adding to the concern, Zinsco panels have been banned in several California cities due to the recognized safety risks they pose. Rumors are circulating about a potential statewide ban, reflecting growing awareness and concern over the hazards associated with these electrical panels.

The CPSC has refrained from issuing recalls for various defective brands, including Zinsco, citing budgetary constraints and the significant financial burden associated with conducting such extensive recalls. Additionally, the commission points to a purported lack of conclusive evidence as a rationale for their inaction.

However, the issues with Zinsco electrical panels are extensively documented, with numerous field reports and studies indicating the frequent malfunctions of both Zinsco and Zinsco-Sylvania panels. Given these concerns and the move towards bans in certain jurisdictions, it is strongly recommended for property owners, particularly those managing multi-family units, to proactively replace any Zinsco electrical panels. This step is crucial not only for ensuring the safety and well-being of residents but also for mitigating potential liabilities associated with electrical fire risks and staying ahead of regulatory changes.


3. How to Identify a Zinsco Breaker Panel?

Zinsco Sylvania panels, having ceased production, are not present in buildings constructed post-1990. Nonetheless, they remain prevalent in older residential and commercial properties dating back to before this cutoff. Identifying these panels typically involves spotting the Zinsco logo prominently displayed on the panel itself.

Breakers within these panels often bear the marking “Zinsco Magnetrip,” a clear indication of their origin. Additionally, labels such as Sylvania, Sylvania-Zinsco, and GTE Sylvania-Zinsco on a panel denote a Zinsco or Zinsco rebranded product, following Sylvania’s acquisition of Zinsco and the subsequent rebranding of the panels under the Sylvania name.

Despite the change in branding, the internal design and functionality of these panels have remained unchanged from the original Zinsco models. This lack of differentiation means they inherit the same vulnerabilities and are subject to the same concerns regarding electrical safety and reliability.

For property managers overseeing multi-family buildings, it’s imperative to approach these panels with caution, treating them as carrying the same potential risks as the original Zinsco panels. Given their known issues, prioritizing the inspection and potential replacement of any such panels is a critical step in ensuring the safety and compliance of electrical systems within older properties.


4. Will a Zinsco Electrical Panel Pass Inspection?

During property inspections, particularly in multi-family buildings, home inspectors frequently highlight the potential hazards associated with Zinsco-style panels. Despite appearing operational, these panels may harbor latent defects that could lead to failure without warning.

Zinsco circuit breaker panels are technically grandfathered into existing electrical codes, meaning they were compliant at the time of their installation and continue to be legally permissible under those standards. However, this status does not equate to current safety assurance. The Consumer Product Safety Commission (CPSC) has not provided specific guidance on Zinsco panels, nor have there been any official recalls of Zinsco products.

From a legal perspective, Zinsco panels may not be faulted. Nonetheless, the documented instances of malfunction and the inherent risks posed by their dated and potentially defective design cannot be overlooked by inspectors. This is particularly pertinent as even the “newest” panels bearing the Sylvania Zinsco label are now over 40 years old, compounding the risk associated with their age and obsolescence.

For property managers, this information underscores the importance of proactive electrical system evaluations. Recognizing the historical context and potential safety concerns surrounding Zinsco panels is crucial in managing the electrical infrastructure of older multi-family properties effectively. Ensuring the safety, compliance, and reliability of these systems is paramount, given the potential for these outdated panels to compromise resident safety and property integrity.


5. Cost to Replace a Zinsco-Sylvania Electrical Panel?

The cost of replacing a Zinsco-Sylvania electrical panel in multi-family buildings typically ranges from $1,800 to $4,000. This variance largely depends on the panel’s amperage, with higher capacity panels such as 150A or 200A attracting a premium due to their complexity and the potential need for additional electrical system enhancements.

For property managers looking to budget for such upgrades, utilizing an electrical panel cost calculator can provide a tailored estimate for installing a contemporary electrical load center that meets current safety and efficiency standards.

Several factors influence the final cost of replacing a Zinsco panel, including:

  • The geographical location and specific regulations of your municipality
  • The extent of labor required for the project
  • The necessity of relocating the panel to comply with current electrical codes
  • Costs associated with rewiring to correct existing faulty installations
  • The physical size of the new electrical panel
  • Potential upgrades to the meter base to accommodate modern electrical demands

Given these considerations, it’s also possible that a comprehensive rewiring of the property may be warranted to ensure full compliance and safety, further affecting the overall project cost.

For multi-family property managers, it’s crucial to factor in these variables when planning electrical system upgrades. Ensuring that electrical panels are up to date not only enhances resident safety but also aligns with evolving electrical standards and practices, potentially averting costly liabilities and insurance issues.


6. Are Zinsco Panels Uninsurable?


Insurance providers and mortgage lenders are acutely aware of the risks posed by properties equipped with outdated and hazardous electrical panels, such as those manufactured by Zinsco. Ownership of a property with a Zinsco panel installed can lead to significant insurance complications, including the potential cancellation of coverage. Alternatively, insurers may offer a limited grace period, requiring the electrical panel to be updated within a specified timeframe to maintain coverage.

The caution exercised by insurance companies in underwriting policies for older properties featuring Zinsco or Federal Pacific Electric (FPE) panels has intensified. This shift is a response to an uptick in claims stemming from incidents related to these electrical systems, marking them as notable liabilities.

The reputation of Zinsco panels for fire hazards is well-established, leading many insurance companies to categorically deny coverage for properties harboring such installations. On the rare occasion that an insurer agrees to cover a property with a Zinsco panel, the property owner may face elevated premiums. This increase reflects the heightened risk of electrical fires and associated damages inherent to these outdated systems.

For property managers of multi-family units, this insurance landscape underscores the importance of proactively replacing Zinsco electrical panels. Doing so not only mitigates the risk of fire and enhances the safety of residents but also improves the insurability of the property, potentially averting financial penalties in the form of higher insurance premiums.

7. Zinsco Replacement Breakers Are Also Unsafe

Opting for used or refurbished Zinsco breakers, potentially sourced from platforms like eBay, does not mitigate the fundamental risks associated with these panels. Such breakers remain susceptible to the same safety concerns and malfunctions, including overheating and failure to trip in overload situations. Purchasing used Zinsco breakers is strongly discouraged.

In terms of compatible breakers for Zinsco panels, Connecticut Electric is known to provide replacement options. While some electricians view these as safer alternatives to the originals, it’s important to note that these replacements are not immune to faults. No definitive evidence suggests that they are significantly more reliable or safer than their predecessors. The core issues often lie within the panel’s bus bars and the materials used in their construction, meaning that merely replacing the breakers doesn’t fully address the underlying safety hazards.

For commercial properties, undergoing a comprehensive electrical panel upgrade represents the most effective solution to these concerns. Such upgrades can usually be completed within one to two days, minimizing disruption to the property’s operations. Implementing a full panel upgrade ensures a safer, more reliable electrical system, addressing not just the breakers’ reliability but also the inherent risks of the panel infrastructure itself.


Zinsco Electric Panel FAQs


Is it possible to sell a multi-family property equipped with old electrical panels?

Absolutely not. The presence of outdated electrical panels significantly complicates the sale of a multi-family property. Potential buyers will encounter difficulties obtaining insurance, a critical factor in the purchasing process. Real estate brokers, aware of these challenges, will often insist on the replacement of such panels prior to sale. Ensuring your property’s electrical system meets current safety standards is essential for a smooth sales transaction.

Will insurance companies cancel coverage on multi-family buildings with faulty breakers?

Yes, insurance companies will indeed cancel coverage on properties found to have faulty breakers. Given the increased risk of fire and electrical hazards associated with such conditions, insurers are adopting a more stringent stance. Furthermore, the insurance market in California is becoming increasingly tight, with notable agencies like State Farm halting the issuance of new policies for the time being. The remaining insurers in the market are exercising heightened caution, making it imperative for property owners to address any electrical safety issues promptly to maintain insurance coverage.


Is it beneficial to replace a Zinsco breaker panel?

Yes, replacing a Zinsco breaker panel is generally considered a wise decision. These older panels often fall short of modern safety standards and can be prone to reliability issues. Updating the panel can significantly enhance the performance of your electrical system and ensure its safe and efficient operation.

Can I consider my Zinsco panel to be safe?

Given the history of malfunctions associated with Zinsco circuit breaker panels and electrical components, these panels pose significant safety hazards, including the risks of electrocution and fire. It is strongly recommended to upgrade your Zinsco panel to a contemporary and more secure electrical panel without delay.

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