Baltimore has some of the oldest housing stock in the country — and a lot of it is still running on electrical panels that were sized for a different era. Here's how to tell if yours is one of them.
Your electrical panel is the heart of your home's electrical system — every circuit runs through it. When it's undersized, outdated, or failing, you get everything from nuisance tripping to a genuine fire risk. Many Baltimore rowhomes and older suburban houses were built with 60- or 100-amp service, back before central air, electric dryers, home offices, and EV chargers. If any of the following sound familiar, it's worth having your panel looked at.
A 100-amp panel was standard for homes built before the 1980s, and a fuse box is older still. Today, most homes need 200-amp service to run comfortably. If you've got a fuse box or a small 100-amp panel and you've added any modern loads, you're likely maxed out — and home inspectors routinely flag these during a sale.
A breaker doing its job once in a while is normal. A breaker that trips repeatedly under everyday use is telling you the circuit is overloaded or the panel can't keep up. If you've mapped which appliances trip it and you're rationing what you run at once, that's a capacity problem, not a quirk.
This is the big one. Federal Pacific Stab-Lok and Zinsco panels — installed widely from the 1950s through the 1980s — have a documented history of breakers that fail to trip during an overload. A breaker that won't trip is exactly how an electrical fire starts. These panels show up constantly in Baltimore-area homes, and insurers increasingly refuse coverage or require replacement. If your home was built between 1950 and 1985 and the panel's never been touched, get it identified. You can read more about replacement on our panel upgrade page.
If your lights flicker or dim when the AC, microwave, or dryer starts, your panel is struggling to deliver enough power to everything at once. Occasional dimming can be minor; consistent dimming across the house points to an undersized service.
Adding an EV charger, central HVAC, a hot tub, a workshop, or finishing a basement all draw significant power. If your panel is already near capacity or out of breaker slots, you'll need an upgrade before you can safely add the new circuit. This is the single most common reason we upgrade panels in Baltimore.
If half your rooms rely on power strips and extension cords, you don't have enough circuits — and overloaded strips are a fire hazard. The real fix is often a mix of a panel upgrade and new dedicated circuits, not more strips.
Panels don't last forever. If yours is 25+ years old, feels warm to the touch, buzzes, hums, or shows any scorching, rust, or a burning smell — stop and call a licensed electrician. Those are signs of loose connections or overheating, and they don't get better on their own.
A standard upgrade swaps your old panel for a new 200-amp service, transfers and re-labels every circuit, and includes the permit, BGE meter coordination, and final inspection. In Baltimore it typically runs $2,500–$4,500 depending on the condition of your service entrance and how much old wiring needs updating. It's usually a one-day job. You can see the full breakdown on our panel upgrade page.
Not sure where your panel stands? A panel evaluation takes about an hour and tells you exactly what you're working with — no obligation. Nexen Electric is a licensed master electrician serving Baltimore City and the surrounding counties.