Level 2 Home Charger
A dedicated 240V circuit and a wall-mounted charger, sized to your panel, your car, and Wheaton's wiring rules.
Residential Charging
Electrical Panel Upgrade for EV Charging in Wheaton, IL
A panel upgrade for EV charging raises your home's electrical capacity, often from 100 to 200 amps, so a charger fits alongside everything else. It starts with an NEC Article 220 load calculation. Many Wheaton homes don't need one, and a load-managed Level 2 charger can sometimes avoid it.
Who Is This For?
An upgrade, or at least a load review, makes sense if:
- You want the numbers before you buy an EV, which an EV readiness inspection provides.
- Your home has 60 or 100 amp service, which is common in older houses near downtown Wheaton.
- Your panel has no open slots for a 50A or 60A two-pole breaker.
- You plan to add a heat pump, an induction range, or a second EV along with the charger.
- You want a Tesla Wall Connector at its full 48A output and the load math falls short.
- You run a small office or shop; see commercial and workplace EV charging for larger service work.
What Is Included?
A panel upgrade usually includes:
- An Article 220 load calculation using your home's square footage, appliances, and the charger.
- A new 200A panel, main breaker, and meter socket where needed.
- New service entrance conductors and grounding brought up to the 2023 NEC.
- Scheduling with ComEd to disconnect and reconnect power at the meter.
- The City of Wheaton permit and inspection, with existing circuits moved into the new panel.
The Process
How Does the Process Work?
Step 1: Call and Describe Your Home
Call and share your service size, the age of your panel, and the big appliances you run. A photo of the panel label helps.
Step 2: Load Calculation
A licensed local electrician runs the Article 220 calculation. Sometimes the math shows your current service can handle the charger after all.
Step 3: Written Quote With Options
The electrician reviews your setup and gives you a written quote, which may compare a full upgrade with load management or a lower charger setting.
Step 4: Permit and ComEd Scheduling
Your electrician submits the City of Wheaton permit with existing and proposed panel schedules and the load calculation. ComEd is scheduled to handle the disconnect and reconnect at the meter.
Step 5: Upgrade, Inspection, and Power Restored
Power goes off for the swap. The City inspects the new service, ComEd restores power, and the charger circuit can go in.
Cost Factors
What Affects the Cost?
Each figure here is a typical range compiled from national cost guides, not a quote from a Wheaton contractor.
100A to 200A Service Upgrade
$1,500 to $3,500typical range
Covers a new panel, main breaker, and service conductors. A new meter socket, mast, or grounding adds cost.
Charger Install After the Upgrade
$800 to $2,500typical range
The Level 2 circuit and charger are a separate line item on top of the panel work.
Load Management Option
An energy management device or a load-sharing charger can cap charging when the house is busy. See installation cost factors.
ComEd's Residential EV Charger and Installation Rebate is closed for 2026 and keeps no waitlist, though the program is slated to continue into 2028; comed.com will show when it reopens. It covers qualifying smart Level 2 chargers and their installation, so ask whether any panel work counts before you plan around it. The federal 30C credit has expired for property placed in service after June 30, 2026.
Permits, Code, and Safety
What Does the Code Require?
Wheaton enforces the 2023 NEC with City Code Chapter 22 amendments. These shape any service upgrade:
Article 220 Load Calculation
The NEC sets the method for sizing a home's service. The calculation adds general lighting, appliances, heating or cooling, and the charger at its full rating.
Wheaton's Local Amendments
City Code Chapter 22, Article V prohibits #8, #10, and #12 AWG aluminum and copper-clad aluminum conductors. NM and UF cable are allowed only for temporary wiring, so relocated circuits run in conduit or another approved method. The City's amendments also call for an outside main disconnect, with narrow exceptions, which can shape where new service equipment goes.
Energy Management Under 625.42
An EV energy management system can limit the charger's draw so the total load stays within the service rating.
Permit and Utility Coordination
A registered electrician signs the City permit, ComEd handles the service disconnect and reconnect, and the work must pass City inspection. See permits and inspections.
Local Notes
Do Older Wheaton Homes Need a Panel Upgrade for an EV Charger?
Many do, but not all. Homes near downtown Wheaton, around Wheaton College, and on the Northside often date from an era when 60 to 100 amp service was standard. Add central air, an electric dryer, and a 50A charger circuit, and the numbers can run out.
Newer homes in south-side subdivisions such as the Danada area often have 200 amp service. They rarely need an upgrade for one charger, and load management often handles a second EV. Detached garages add a twist, since a subpanel or long feeder may be part of the plan, as the outdoor and driveway charger guide explains.
Service upgrades follow the same pattern in nearby towns, but permits do not. Winfield, Carol Stream, and Glen Ellyn each have their own permit office. Condo owners usually share a building service, covered on the condo and HOA charging page. If a tripping breaker raised the question, start with EV charger repair and troubleshooting.
Outside Wheaton? Every DuPage County town runs its own permit office and its own contractor registration. Check the service areas guide for your address.
FAQ
Panel Upgrade FAQs
Straight answers about panel upgrade for EV charging in Wheaton and nearby DuPage County towns.
How Do I Know If I Need a Panel Upgrade for an EV Charger?
A load calculation is the only reliable way to know. Your electrician adds up your home's loads under NEC Article 220 and compares the total with your service rating.
Can Load Management Replace a Panel Upgrade?
Often, yes. A load management device or smart charger can cut back charging when the house draws heavy power. NEC 625.42 allows the load calculation to count the managed limit.
Who Cuts the Power During a Service Upgrade?
ComEd does. The utility disconnects service at the meter for the swap and reconnects it once the work is ready.
Does a Panel Upgrade Need a Permit in Wheaton?
Yes. A service upgrade requires a City of Wheaton electrical permit and inspection. The City requires a licensed electrician registered with it to sign that permit.
Can I Charge an EV on 100 Amp Service?
Many homes can. With modest other loads, a 100 amp service may support a 32A or 40A charger, or a managed charger. The load calculation decides, and NEMA 14-50 outlets at 40A are a common choice on smaller services.
Keep Reading
Related Services
NEMA 14-50 Outlet
A 50A, 240V receptacle for a plug-in charger, with GFCI protection and a heavy-duty receptacle built for nightly use.
Installation Cost Factors
Typical ranges for a Level 2 install, a 14-50 outlet, and a panel upgrade, plus the factors that move a Wheaton quote.
Wheaton, IL
Ready to Talk Through Your Charger?
Call to speak with a local electrician about your EV charger install. Get connected today.
Call (630) 467-6142
Installs are performed by independent, locally licensed electricians.