Short answer
An old fuse box or panel isn't automatically unsafe, but fuses that keep blowing, oversized fuses or pennies behind them, heat, scorch marks, or a service too small for today's appliances are real problems. Certain older panels, including Federal Pacific Stab-Lok and some Zinsco models, have long-standing reliability concerns and are often flagged by insurers. Replace blown fuses only with the same size, and have an electrician assess the panel.
What's probably happening
Huntington is an older town. The U.S. Census American Community Survey (2020–2024) puts the median home in the city of Huntington at 1954, with 39% built before 1940. Countywide, the median is 1966, with 32% before 1940. A lot of those homes still have their original fuse box, or a panel from the 1960s or 1970s, feeding a household that now runs far more than it was designed for.
Fuses blowing from overload
Older homes often have few circuits, each feeding several rooms. Add a space heater, a microwave, a window AC, or a modern kitchen, and fuses blow. The fuse is doing its job. The fix is more circuits, or a larger service, not a larger fuse.
Oversized fuses, or pennies behind fuses
This is one of the most common dangerous things we see in old fuse boxes. Someone got tired of a 15-amp fuse blowing and put in a 20 or a 30, or put a coin behind the fuse to bypass it. Either one removes the protection for that wire. The wire can overheat inside the wall without anything shutting off. If you find this, leave it as it is and don't use that circuit heavily until it's looked at.
A 60 or 100 amp service in an older home
Many older homes have a 60-amp or 100-amp service. That was plenty when the house was built. Central air, electric heat, an electric range and dryer, a well pump, a shop in the garage, or an EV charger can be more than it can handle. Signs include dimming when big loads start, fuses or breakers tripping often, and no room in the panel for new circuits.
Federal Pacific Stab-Lok and Zinsco panels
Federal Pacific Electric panels with Stab-Lok breakers, and some Zinsco panels, were installed in many homes from roughly the 1950s through the 1980s. Both have been the subject of long-running concerns that some of their breakers may not trip reliably under overload, or may not hold firmly to the bus, which can cause overheating. Not every one of these panels has failed, and we won't tell you yours is about to. But many insurers ask about them, and replacement is often the practical answer. The name is usually on the panel door or label.
Wear, heat and moisture
Basement panels in older homes can see years of dampness. Corrosion, loose connections, and heat damage build up slowly. Rust on the panel, discolored fuses or breakers, or a warm panel cover are all worth a visit.
What you can safely check yourself
- If a fuse blows, find the one with a broken strip or a darkened window. Unplug things on that circuit first.
- Replace a blown fuse only with one of the same amp rating, printed on the fuse. If the fuse box has a main switch or lever, turn it off first. Stand on a dry surface, keep one hand at your side, and handle it only by its glass or insulated rim. If you aren't comfortable doing that, don't.
- Look at the ratings of the fuses in the box. If a circuit that runs lights and outlets has a 25 or 30-amp fuse, make a note. Don't change it yourself; call.
- Note the brand name on the panel door or label, and whether the main says 60, 100 or another number.
- Look for rust, water stains, scorch marks, or a smell near the panel, without opening anything.
- If your insurer is asking, get their request in writing so we know exactly what they need.
Never put a coin, foil, or a larger fuse in a fuse socket, and don't remove the panel's cover.
When to stop and call
- A fuse blows again right after you replace it with the correct size.
- You find oversized fuses, pennies, or anything bypassing a fuse.
- The panel, a fuse, or a breaker feels warm, buzzes, or smells hot. If there's smoke, get out and call 911.
- Your insurer is asking for an assessment or a replacement.
- You're planning central air, a heat pump, an EV charger, a kitchen remodel, or a shop, and you have a fuse box or a 60 or 100-amp service.
Replacing fuse boxes and upgrading older services is work Sky High Electric does around Huntington County. A replacement typically involves a permit and inspection where your city or county requires it, and coordination with the utility. Call (260) 519-1188 and tell us what you're seeing in the panel, or what your insurer asked for.
Common questions
Is a fuse box dangerous?
A fuse box in good shape, with the right size fuses, protects circuits. The problems are age, wear, and misuse: oversized fuses, pennies behind fuses, overheated connections, and a service too small for how the house is used today.
Can I put in a bigger fuse so it stops blowing?
No. The fuse size is matched to the wire. A larger fuse lets the wire overheat before the fuse blows. If a fuse keeps blowing, the circuit is overloaded or has a fault, and it needs to be fixed, not bypassed.
My insurance company is asking about my panel. What do they want?
Insurers often ask about fuse panels, certain older panel brands, and the size of the service. Sometimes they want a panel replaced, sometimes an electrician's assessment. Ask them exactly what they need in writing, and we can help from there.
Is 100 amps enough for my house?
It depends on what the house runs. Many older homes do fine on 100 amps with gas heat and no big additions. Adding central air, an electric range, a heat pump, a hot tub, or an EV charger can push it past what it can handle. A load calculation answers it.