Signs Your Electrical Panel Needs Upgrading

Houses ask more of their panels than they used to

Central air, a second refrigerator, a hot tub, a finished basement and now a car charger all land on a service that may have been sized when the house was built. Nothing failed. The house simply grew past what it was wired for.

Six signs worth taking seriously

• No spare spaces. Every slot in the panel is full. Adding anything means a tandem breaker, and tandems are a workaround, not capacity.
• A service rated under 100 amps. Common in older homes and well short of what a modern house draws.
• Breakers tripping under normal load. Not one appliance overloading one circuit, but the panel struggling with an ordinary evening.
• Fuses instead of breakers. A fuse box is not automatically unsafe, but it is a strong signal the service has not been touched in decades.
• Lights dimming when something large starts. A momentary dip when the air conditioning kicks in points at a service working near its limit.
• Your inspector or insurer asked about it. They do not raise panels casually.

The two brands that come up

Federal Pacific Electric Stab-Lok and Zinsco panels are the two that home inspectors flag and insurers ask about, because of long-standing questions about whether their breakers reliably trip under fault. If you have one, it will usually be named on an inspection report. It is worth getting looked at on its own merits rather than waiting for a sale to force the issue.

What an upgrade actually involves

Most upgrades go to 200 amp service. The work is permitted and inspected, and the utility has to disconnect and reconnect, which has to be scheduled with them rather than decided on the day. There is an outage while the panel is swapped — that part is unavoidable, and how long depends on the scope.

A sub-panel is sometimes the better answer. If the main service is adequate but a garage, workshop or addition needs its own capacity, a sub-panel gets there for less than replacing everything.

If you are adding a car charger

A Level 2 charger is a substantial continuous load and it is the most common reason a panel gets looked at now. Whether the existing service can carry one depends on the panel's rating and what is already on it. Plenty of homes are fine as they are — but that is a check to do before buying the charger, not after.

Need help with this? See Panel Upgrades, or call 331-230-5878.