A lot of Andover’s housing stock splits into two eras: the historic center and older neighborhoods built with 60 or 100 amp services, and the post-war and modern homes built out further where 100 amp was standard until fairly recently. Neither size was built with a heat pump, a second oven, and an EV charger in mind, which is exactly what a lot of Andover homeowners are adding right now.
Andover has more older housing than people assume once you get off the main roads and into the side streets near the historic center. Homes from that era can still have knob and tube wiring feeding into a panel that was never touched since the 1960s, and cloth-insulated conductors that have gone brittle. The panel itself is often the weak link – not the wiring in the walls, but the box distributing power to it.
Two panel brands come up constantly in this part of the North Shore: Federal Pacific Stab-Lok and Zinsco. Both were installed widely from the 1950s into the 1970s, and both have a well-documented problem – the breakers don’t reliably trip when they’re supposed to. That’s not a minor defect. A breaker that fails to trip during an overload or a short is a fire risk sitting behind your basement stairs.
Then there’s Andover’s remodel demand, which is real and steady. A kitchen gutted down to the studs, a primary suite addition, a finished basement – all of it gets discovered by an inspector or a contractor who opens the panel and finds it’s maxed out, corroded, or one of the flagged brands. Insurance underwriters have also gotten sharper about this. Several major carriers now require Federal Pacific and Zinsco panels to be replaced before they’ll write or renew a homeowner’s policy in Massachusetts.
Panel replacement starts with the utility. The main breaker gets shut off, and depending on your setup, the meter may need to be pulled by National Grid or the utility crew before Brandon can safely open the panel. That’s a coordination step, not a delay he can shortcut – the utility owns the meter and the service drop up to the point it connects to your house.
Once power is confirmed off, the old panel comes out. Every circuit gets landed in the new panel, breaker by breaker, checked against the wire gauge it’s paired with – a 20 amp breaker needs 12 gauge copper, a 15 amp needs 14 gauge, and mismatches from decades of DIY additions get corrected here, not ignored. The new panel gets grounded and bonded properly, which older installs frequently got wrong or skipped.
After the panel is wired, Brandon tests every circuit before anything gets buttoned up: verifying breakers trip correctly, checking for open grounds or reversed polarity, and confirming the main disconnect operates cleanly. Then it’s ready for inspection.
A straightforward panel replacement in a single-family Andover home typically runs {PRICE_LOW} to {PRICE_HIGH}. Where you land in that range depends on a few things: whether you’re going from 100 amp to 200 amp while you’re at it, how many circuits need to be relocated or relabeled, whether the meter socket or service mast also needs work, and how accessible the panel location is. A basement panel with clear access costs less to swap than one buried behind finished walls or crammed into a tight closet.
Brandon quotes the job after seeing the panel in person, not off a phone description. Panels hide problems – double-tapped breakers, aluminum wiring, undersized grounding – that only show up once the cover is off.
Most residential panel replacements are a one-day job. Power typically goes out mid-morning once the utility has cleared the meter pull, and it’s back on by late afternoon after the new panel is wired, tested, and the inspector has signed off or the inspection has been scheduled. Larger homes with subpanels, or jobs that uncover major rewiring needs once the old panel is opened up, can run into a second day. Brandon will tell you which situation you’re in before he starts, not after.
Panel replacement requires a permit and an inspection in every Massachusetts town, Andover included. This isn’t paperwork for its own sake – it’s the mechanism that keeps unlicensed and unsafe panel work out of homes. A licensed electrician pulls the permit, the Andover inspector reviews the completed work against the National Electrical Code, and the job doesn’t get closed out until it passes. If you’re ever selling the house, that inspection record is what a buyer’s home inspector and their insurance company will want to see. Work done without a permit can become a real problem at closing.
If your panel is a working 100 amp or larger service and you just need more circuits or amperage for an EV charger or an addition, that is usually an upgrade. If the panel itself is the problem – it's a Federal Pacific Stab-Lok, a Zinsco, it's rusted, the breakers won't reset properly, or an inspector flagged it during a home sale – that's a replacement. Brandon can tell you which one you actually need in about ten minutes at the panel.
Both brands have documented histories of breakers that fail to trip during an overload or short, which is the entire job of a breaker. They were installed heavily from the 1950s through the 1970s. Insurance companies in Massachusetts increasingly flag them, and some won't write or renew a policy until the panel is replaced.
Yes, for part of the day. The main breaker gets shut off before the old panel comes out, and power stays off until the new panel is wired in and tested. Most single-family replacements are back on by late afternoon on the same day the work starts.
If your panel is a Federal Pacific, a Zinsco, or just old enough that you’re not sure what’s behind the cover, it’s worth having it looked at directly rather than guessing from a home inspection report. Call {PHONE} to talk with Brandon about your panel and get a straight answer on whether it needs replacing.
Brandon is the electrician at Belfiore. He left union work to run the electrical side of a family plumbing and electrical company based in Salem, and panel replacement is a job he’s done often enough to spot a Federal Pacific panel from across the basement. Andover sits at the far edge of the area Belfiore covers out of Salem, so scheduling a panel replacement usually means picking a day in advance rather than same-day service – Brandon will be straight with you about timing when you call, not vague about it.