Electrical Panel Upgrades in Portsmouth, NH

Your electrical panel, sometimes called a breaker panel or load center, manages every circuit in your home. When your home was built, the panel was sized for the electrical load of that era. Most homes built before the 1990s were wired for 100-amp service. That was plenty when your biggest draw was a refrigerator and a few light fixtures. Today's homes run on a lot more. Central air conditioning, EV chargers, heat pumps, induction ranges, whole-home generators, home offices loaded with electronics. A 100-amp panel that was adequate in 1975 can't handle a modern load without tripping constantly or, worse, running hot. Our Dover electrician team will ensure your home has the electricity it needs with a panel upgrade in Portsmouth, NH.

Signs Your Panel Needs an Upgrade

The most common sign is a breaker that keeps tripping. One or two trips a year on a high-draw circuit is normal. If you're resetting the same breaker multiple times a week, that circuit is overloaded, or the breaker itself is failing. Either way, it's worth a look. Other signs to watch for include:

• Dimming or flickering lights when large appliances kick on
• A burning smell near the panel, or scorch marks around breaker slots
• Breakers that feel warm to the touch
• You're adding a major appliance, and your electrician says the panel won't support it
• Your home still has a fuse box, knob and tube wiring, or an original Federal Pacific or Zinsco panel

The last two are worth calling about regardless of symptoms. Federal Pacific Stab-Lok panels have a known history of breaker failure and are a recognized fire risk. If your Portsmouth home still has one, an upgrade isn't optional. It's overdue.

What a Panel Upgrade Actually Involves

A full-service upgrade replaces the main panel, the meter base, and the service entrance cable connecting your home to the utility. Our NH master electrician pulls the required permit, coordinates with Eversource for the disconnect, and inspects the grounding system to make sure everything meets the current NH electrical code.

Most residential panel upgrades go from 100-amp to 200-amp service. For larger homes with significant electrical loads, including EV chargers, heat pumps, and whole-home standby generators, 200-amp service is the standard minimum. Some homes in the Portsmouth area with substantial modern loads have moved to 400-amp service, but that's less common for standard single-family homes.

The job typically takes one day. You'll have a short period without power while we make the switchover, usually a few hours once Eversource has disconnected the service. By the end of the day, you've got a fresh panel, proper labeling on every circuit, and a system that's built for what your home actually needs.

Dedicated Circuits and Service Upgrades for Modern Loads

A panel upgrade is often the right time to add dedicated circuits for high-draw appliances. EV chargers need a dedicated 240-volt circuit. So do electric ranges, dryers, hot tubs, and central AC units. If you're adding any of these to your Portsmouth home, we can handle the panel upgrade and the dedicated circuit work in the same visit.

Mr. Electric of Southeast NH also installs Level 2 home EV chargers, whole-home surge protection, and GFCI and AFCI breakers as part of a full-service upgrade. Ask about our payment plan options, which can cover up to $4,000 in service upgrade work and up to $2,500 for electrical wiring and dedicated circuit installations.

Why Portsmouth Homeowners Call Mr. Electric of Southeast NH

We know the housing stock in this area well. Portsmouth, Exeter, Durham, and the surrounding Seacoast towns have a mix of older Colonials, Victorian-era homes, newer construction, and everything in between. The older homes frequently have outdated panels, knob and tube wiring in attics, or undersized service that made sense decades ago but doesn't cut it now. We've seen it all. Every job is handled by a licensed electrician, not a helper under limited supervision. NH requires an NH master electrician to pull permits and oversee electrical work, and we operate that way on every job. Permits are pulled, inspections are scheduled, and the work is done to code. That matters when you go to sell the house.

We're also upfront about what a job involves before we start. If we find something during the panel assessment that changes the scope, we will tell you before we touch anything. No surprises on the final invoice. Our service area covers Portsmouth, Rochester, Somersworth, Hampton, Exeter, Durham, Newmarket, Epping, and the surrounding areas of southeast New Hampshire, including communities across the Maine border, such as York, Kittery, Berwick, and South Berwick. If you're not sure whether we cover your area, call us.

Ready to schedule an assessment? Call Mr. Electric of Southeast NH or book online. We'll take a look at your panel, walk you through what we find, and give you a written estimate with no pressure.