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Service · Panel Upgrades

100A to 200A panel upgrades.

Older homes in Taunton, Brockton, and Fall River are still running 100A panels sized for 1970s loads. A modern kitchen plus a heat pump plus an EV charger needs 200A minimum. We coordinate with the utility, pull permits in the master’s name, and close every job with a labeled panel diagram.

Schedule a walk-through (508) 818-3165
  • Master Electrician licensed 2024
  • Generac dealer + warranty tech
  • Panasonic Gold mini split installer
  • Mass Save partner · Insured & bonded
New 200A electrical service panels installed in a Taunton MA basement with overhead conduit by Hopkins Electric Panel install · Triple service
  • Massachusetts Master Electrician
  • Generac Dealer + Warranty Tech
  • Panasonic Gold Mini Split Installer
  • Mass Save Partner
Why upgrade

Modern loads need 200A.

Most older homes in SE Massachusetts have 100A service. That was fine for a 1970s electric load: range, water heater, dryer, lights. It is not fine for a heat pump plus an EV charger plus a modern kitchen plus a finished basement.

What 200A unlocks. Heat pump capacity for the whole house, two EV chargers, induction cooking, electric water heater or hybrid heat pump water heater, expanded sub-panel for an addition, generator integration.

Coordination with the utility. Service upgrades require utility coordination. We file with the utility, schedule the disconnect-reconnect, and have the new service ready when their crew shows up. No overnight outage.

Permits in the master’s name. Service upgrades are inspector-attended at rough-in and final. Tyler pulls the permit, walks the inspector through, and closes the permit when the work passes.

Panel selection. We spec Square D QO or Eaton CH for residential, commercial-grade for commercial. Not box-store specials. The breakers fit, the lugs torque, the panel directory is typed and laminated.

Sub-panels and additions. Garage sub-panels for EV charging or a workshop, basement sub-panels for finishing projects, generator integration sub-panels with a manual transfer.

Panel upgrades are the unsexy, gateway work that quietly makes everything else in the house possible. EV charger? Mini split? Whole-home generator? Heat pump dryer? Induction range? Each one of those big modern loads needs panel capacity to land on a properly-sized breaker without bumping into the main. If your Taunton, Brockton, Fall River, Attleboro, or Randolph home is still running on a 1970s 100-amp service with a Federal Pacific Electric Stab-Lok or a Zinsco panel, every breaker added to that panel — every renovation, every kitchen remodel, every bathroom add — is one breaker closer to a problem the inspector won’t sign off on, an insurance claim that gets denied, or a load that simply trips the main during the first cold snap. Hopkins Electric upgrades panels in the master’s name. That phrase means something specific in Massachusetts: the electrical permit gets filed under Tyler’s master license number, the wiring inspector signs the certificate of compliance to Tyler, and the work is documented in your town’s permanent record under the master’s signature. A printed, labeled panel diagram lives inside the dead-front of every panel we install — every breaker mapped to a room, an appliance, or a circuit purpose.

100-amp to 200-amp service upgrade — the most common upgrade, what’s actually involved

The standard panel upgrade in southeastern Massachusetts is a 100-amp to 200-amp service-entrance upgrade — that doubles the home’s main capacity, gives you headroom for an EV charger plus a mini split plus a future generator plus an induction range without ever brushing the main breaker again, and brings the service into compliance with the modern NEC and Massachusetts amendments. The work involves coordinating with the utility (Eversource for most of Bristol and Plymouth counties, National Grid in some Norfolk-county towns) for a temporary disconnect, swapping the meter pan if it’s the older 100-amp form factor, pulling new SEU or USE service-entrance cable from the meter to the panel sized for 200 amps continuous (typically 2/0 copper or 4/0 aluminum), installing a new 200-amp main breaker panel (Square D QO, Eaton CH, or Siemens equivalent — we have strong opinions and walk you through them), re-feeding every existing branch circuit with proper grounding/bonding per 250.24, installing new grounding electrode conductors to ground rod and water-pipe bond per 250.50, and walking the inspector through the work. Typically a one-day job for a single-family home in Taunton, Brockton, Fall River, Attleboro, Randolph, or Stoughton. Power is off for four to six hours during the meter swap and re-energization.

Federal Pacific Stab-Lok and Zinsco — the two known-defective panel brands in MA

Federal Pacific Electric Stab-Lok panels (manufactured 1950s-1980s) and Zinsco panels (manufactured 1960s-1970s) are the two panel brands that the U.S. Consumer Product Safety Commission has documented as failing to trip on a fault — the breaker latches energized while the bus continues to feed an arcing fault, with predictable consequences. Massachusetts insurers increasingly write exclusions on homes with FPE or Zinsco service panels, and home inspectors now flag them on every pre-sale inspection in Bristol, Plymouth, and Norfolk counties. They belong out of the wall. We replace them with a Square D QO 200-amp panel or an Eaton CH 200-amp panel (matched to whatever breaker brand fits your AFCI/GFCI requirements cleanest), re-feed every circuit, label every breaker against your room and appliance map, and provide a printed panel directory that lives inside the dead-front. The replacement also typically resolves any pre-sale inspection callouts and removes the insurance exclusion if your carrier wrote one.

Subpanels, load-management modules, and the calculation that decides which path is right

Sometimes the right answer for your home isn’t a service upgrade — it’s a subpanel fed from the existing main, paired with a smart load-management module. If you only need one more big load (most often an EV charger) and the actual demand calc on your existing 100-amp service shows you have headroom on real demand (NEC 220 calc), we can add a 60-amp or 100-amp subpanel fed from the main with an automatic load-shedding device — DCC-9, Span panel, NeoCharge, or a similar UL-listed module — that sheds the EV charger when the dryer plus range plus AC condenser are running together. Cheaper than a full service upgrade, fully code-compliant, and gives you the flexibility to add the EV without paying $4,500 to replace a 200-amp service that’s not the bottleneck. We walk through the demand calc with you and document the result so the inspector can verify the load-shed strategy on permit.

Permits, inspections, and the certificate of compliance that lives in the file forever

Every panel upgrade in Massachusetts pulls an electrical permit (typically $75-$200 depending on town — Taunton runs around $100, Fall River runs $125, Attleboro and Randolph run similar) and an inspection by your town’s wiring inspector. Tyler files in his master’s name, schedules the inspection within five business days of completion, walks the inspector through the new service entrance, the panel work, the grounding and bonding, the labeling, and any AFCI/GFCI compliance updates required by the upgrade. The inspector signs the certificate of compliance to Tyler. We hand you the signed certificate, file a copy in the project record, and the work lives in your town’s permanent record under our master license. That paper trail matters at refinance, at resale, on a future insurance claim, and on any renovation work down the road that depends on the panel work being inspected and signed.

AFCI/GFCI compliance, surge protection, and the upgrades the inspector will require

A 100-to-200-amp service upgrade triggers Massachusetts amendments to the NEC that often require updating bedroom and living-area circuits to AFCI protection, kitchen and bathroom circuits to GFCI protection, and (under 2020 NEC amendments adopted in MA) whole-house surge protection on the new panel. We bake all of this into the proposal up front — Square D QO Plug-on Neutral AFCI/GFCI breakers across every required circuit, a Type-2 SPD (Eaton CHSPT2ULTRA or Square D HEPD80) on the new panel — so the inspector doesn’t surface a surprise the day of inspection. Whole-house surge protection is the single highest-return additive in the upgrade — runs about $250-$400 installed, protects every device on the panel from utility transients and lightning-induced surges, and qualifies many homeowners for a small homeowners-insurance credit.

Hopkins Electric runs panel upgrades — 100A to 200A service upgrades, FPE Stab-Lok and Zinsco replacements, subpanel adds with managed load-shed, and full panel re-feeders — across Taunton, Brockton, Fall River, Attleboro, Randolph, Stoughton, and the rest of Bristol, Plymouth, and Norfolk counties. Typical project lead time from signed estimate to inspector signature is two to three weeks: one week for utility coordination on the service-entrance work, the install day itself, and a week of inspection scheduling. Fixed-price proposal, permits in Tyler’s master license, panel diagram in the dead-front of every panel, and a signed certificate of compliance in your hand at completion.

Panel upgrade workflow

No overnight outage. Permitted, labeled, closed.

01

Walk-through + load review

We measure your existing service, list your add-loads, and spec the right 200A or 300A panel. Free fixed-price scope.

02

Permits + utility coordination

Permit filed in master’s name, utility disconnect-reconnect scheduled, equipment ordered.

03

Install + labeled close-out

New service installed, breakers populated, directory typed, panel labeled, inspector signs off. Photos for your records.

Frequently asked

Common questions before booking.

For anything not answered here, the fastest reply is texting Tyler at (508) 818-3165 or sending project details through the contact form. Visit our gallery for recent work.

How long is the power off during a service upgrade?

Usually 4-6 hours during the utility disconnect-reconnect window. We coordinate so it happens during a single workday, not overnight.

Do I need 200A if I’m just adding an EV charger?

Maybe. A Level 2 EV charger draws 30-60A continuous. If your existing panel is at 80%+ capacity already, an EV charger pushes it over. We do a load calculation and tell you straight whether your current service holds it.

How long does a panel upgrade take total?

Site walk to running new panel is typically 2-4 weeks. Install day is 1-2 days on site (utility window dictates). Inspector visit is scheduled for the same week.

Are you licensed?

Yes. Tyler Hopkins is a Massachusetts Master Electrician (license earned 2024). Hopkins Electric LLC is fully insured and bonded. We pull permits in the Master Electrician’s name on every job that requires one.

Do you pull permits?

Yes, on every job that requires one. We file with your town inspectional services office, attend rough-in and final inspections, and close out the permit when the work passes. Permits are included in the fixed-price scope.

Explore more

Other Hopkins Electric services + areas

Panel Upgrades is one of seven specialty services Tyler runs. Browse the full menu of services or jump to your town to see what we cover locally.

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Tell Tyler about your panel upgrades project

Every panel upgrades quote is a walk-through with the master electrician — not a templated form-fill from an estimator. Tyler arrives with a meter, walks the panel, talks through the scope, and emails a fixed-price proposal the same day or next morning.

  • Master Electrician. Tyler runs every estimate himself.
  • Fixed-price scope. Written proposal, no “time + materials surprise” billing.
  • Permits in master’s name. Filed with the city, inspected, signed.
  • Same-day reply. Most quotes go out within hours of the visit.
Prefer to talk now? Call or text Tyler at (508) 818-3165. Email office@hopkinselectric-ma.com.

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Ready when you are

Ready for a panel upgrade?

Free walk-through, fixed-price scope, master pulls the permit. No overnight outage, labeled panel diagram at close-out.

Schedule a walk-through (508) 818-3165
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