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Electrical Panel Upgrade · Connecticut
A panel upgrade replaces your breaker panel, and often the service entrance, so the home can safely carry more load: an EV charger, heat pump, induction range or addition. It always needs a permit, and usually needs the utility to disconnect and reconnect power.
Older housing stock and nor'easter outages make rewiring, panel replacement and generator transfer switches frequent projects.
Across the Northeast, homes deal with cold winters, nor'easters and ice storms. Permit offices, utilities and housing stock differ by city, which affects how electrical panel upgrade is planned and scheduled. These local guides cover the Connecticut cities where we have written specific notes.
Heat-pump conversions are a big driver of panel and service upgrades in Hartford, encouraged by Connecticut's Energize CT incentives. Multi-family houses usually have a separate small service and meter for each unit, so an upgrade may involve the meter bank and the building's service entrance.
Utility: Eversource
New Haven's two- and three-family houses usually have a separate small service and meter for each unit, and a heat-pump conversion or EV charger often needs more capacity. United Illuminating, not Eversource, handles meters and service work in New Haven, so scheduling goes through UI.
Utility: United Illuminating (UI)
Many Bridgeport multi-family houses have a separate small service for each unit, often in a basement meter bank, and adding heat pumps, central air or in-unit laundry usually requires upgrading each service. Single-family homes in the North End and Brooklawn may still have 60 or 100 amp services.
Utility: United Illuminating (UI)
Many Waterbury homes still have 60 amp services or fuse panels, and triple-deckers often have three small services in a basement meter bank. Adding heat pumps, central air, in-unit laundry or an EV charger usually requires upgrading one or more services.
Utility: Eversource
Stamford homeowners adding heat pumps, central air, EV chargers or finished basements often find older homes in Glenbrook, Springdale and the Cove have 60 or 100 amp services. Multi-family houses near downtown may have several small services.
Utility: Eversource
1. Load calculation
The electrician sizes the service from your existing and planned loads.
2. Permit and utility coordination
The permit is pulled and the utility schedules disconnect and reconnect.
3. Install the panel and service parts
New panel, breakers, grounding and bonding, and service conductors or meter base if needed.
4. Inspection
The local inspector checks the work before or after power is restored, depending on the jurisdiction.
Electricians set their own prices; local permit fees and utility requirements add to these factors.
Permits come from the city or county where the home is. For example: Hartford: Electrical permits in Hartford come from the city's Licenses and Inspections division; West Hartford and other towns issue their own. New Haven: Electrical permits in New Haven come from the city's building department; surrounding towns issue their own. Bridgeport: Electrical permits come from the City of Bridgeport's building department. Waterbury: Electrical permits come from the City of Waterbury's building department. Stamford: Electrical permits come from the City of Stamford's building department.
Hartford: Eversource. New Haven: United Illuminating (UI). Bridgeport: United Illuminating (UI). Waterbury: Eversource. Stamford: Eversource.
If you have 100 amps or less and are adding an EV charger, heat pump or electric range, or your panel is a Federal Pacific, Zinsco or fuse box, ask an electrician for a load calculation.
Usually most of one working day, depending on the scope and how quickly the utility reconnects.
Yes, in essentially every US jurisdiction. The electrician pulls it and schedules the inspection.
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